JP2008090202A - Tuning device and computer program for tuning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tuning device that enables a player to perform tuning operation, without having to change the attitude. <P>SOLUTION: The tuning device comprises an input section 10 which inputs a musical sound; a frequency extraction section 12a which extracts the frequency of the input musical sound; a frequency storage section 14a which stores fundamental pitch frequencies by musical instruments; a musical sound generating circuit 16 which generates musical sounds of specified frequencies; a comparison section 18 which reads the fundamental pitch frequency of a musical instrument that a user specifies out from among the frequency storage section 14a and compares the frequency with the frequency extracted by the frequency extraction section 12a; and a control section 20, which reads the frequency of the fundamental pitch of the musical instrument that the user specifies from among the frequencies stored in the frequency storage section 13a, to make the musical sound generating circuit 16 generate musical sounds and stop the musical sound generation of the musical sound generating circuit 16, when the frequency of the fundamental pitch of the selected musical instrument read out of the frequency storage section 14a matches the frequency extracted by the frequency extraction unit 12a, when the comparison section 18 makes the comparison. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tuning device and a computer program for tuning.

  As shown in the following Patent Document 1 or the like, a conventional tuner (tuning device) is usually a visual one that displays a sound (pitch) deviation on a meter or a monitor.

Based on the display, the user is tuning the target musical instrument.
JP-A-7-114382

  However, fine work is necessary for tuning.For example, in the case of a violin, the player works while holding the instrument, so it is necessary to change the movement of the body and neck to check the tuner. Originally, the tuning work was unexpectedly time consuming.

  In addition, when attention was directed to the monitor or meter, the posture changed such as moving the neck, and in severe cases, there was a possibility that the instrument dropped out and encountered accidents such as damage etc. .

  The present invention has been devised in view of the above problems, and is intended to provide a tuning device that allows a user player to perform necessary tuning work without changing his / her posture.

  In addition, a computer program that makes a computer function as such a tuning device is also proposed.

Therefore, the tuning device according to the present invention is
Input means for inputting musical sounds of musical instruments;
Frequency extraction means for extracting the frequency from the input musical sound;
Storage means for storing the fundamental frequency of each instrument;
A musical sound generating means for generating a musical sound based on a specified frequency;
The fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means out of the fundamental frequency for each instrument stored in the storage means, and the frequency and the frequency extraction means are extracted. A comparison means for comparing the frequency;
From the fundamental frequency of each musical instrument stored in the storage means, the fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means, and the musical tone generation means is configured to generate a musical tone. In the comparison by the comparison means, if the frequency of the fundamental tone of any musical instrument read from the storage means by the user's designation matches the frequency extracted from the frequency extraction means, the musical tone generation means generates the musical sound. It has a basic feature of having at least control means for stopping.

  According to the above configuration, during tuning, the control unit generates a musical tone having a fundamental frequency of an arbitrary musical instrument specified by the user from the musical tone generation unit. When the frequency of the fundamental tone of any musical instrument read from the storage means matches the frequency extracted from the frequency extraction means, the control means stops the tone generation by the tone generation means. Since the tuning work can be performed by an auditory method (without relying on the sound without changing the posture) regardless of visual, the player can perform the tuning work without having to change the posture.

The configuration of the tuning device according to claim 2 is a configuration in which the frequency of the fundamental tone to be tuned and the frequency of the extracted musical tone are sensed and compared with voltage values corresponding to them, and more specifically,
Input means for inputting musical sounds of musical instruments;
Voltage value extraction means for extracting a voltage value corresponding to the input frequency from the input musical sound;
Storage means for storing a voltage value corresponding to the frequency of the fundamental tone for each instrument;
A musical sound generating means for generating a musical sound based on a specified voltage value;
Among the voltage values corresponding to the fundamental frequency of each musical instrument stored in the storage means, a voltage value corresponding to the fundamental frequency of any musical instrument designated by the user is read from the storage means, and the voltage Comparing means for comparing the value with the voltage value extracted from the voltage value extracting means;
Among the voltage values corresponding to the fundamental frequency of each musical instrument stored in the storage means, a voltage value corresponding to the fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means, and the musical tone is read out. In the comparison by the comparison means, a voltage value corresponding to the frequency of the fundamental tone of an arbitrary musical instrument read from the storage means and extracted from the voltage value extraction means in the comparison by the comparison means is generated by the generation means. It has at least control means for stopping the tone generation by the tone generation means when the voltage value matches.

  According to the above configuration, during tuning, the control means generates a musical sound corresponding to the voltage value of the fundamental tone of an arbitrary musical instrument designated by the user from the musical sound generating means. When the voltage value of the fundamental tone of any musical instrument read from the storage means by the designation matches the voltage value extracted from the voltage value extraction means, the control means generates a musical tone by the musical tone generation means. Since it is stopped, the tuning work can be performed by an auditory method (without relying on the sound without changing the posture), regardless of visual, so that the player can perform the tuning work without having to change the posture.

  The configurations of claims 3 to 4 are read out and executed by a computer, thereby making a proposal regarding a computer program to be the tuning device of claims 1 to 2.

  That is, as a configuration for solving the above-described problem, the processing means in each configuration of the tuning device defined in claim 1 or 2 is executed by using the configuration of the computer and read by the computer. An executable computer program is disclosed. Of course, it goes without saying that these configurations may be provided not only as a computer program but also as a configuration of a recording medium storing a program having a similar function, as will be described later. In this case, the computer may include a general-purpose computer configuration including the configuration of the central processing unit, or may include a dedicated machine directed to a specific process, and the configuration of the central processing unit. If it accompanies, there will be no limitation in particular.

  When such a program for causing a computer to execute each of the above processes is read by the computer, the same process as that achieved by any means in the tuning device configuration defined in claim 1 or 2 is performed. Will be executed. However, since the computer is not always equipped with the above-described input means for musical sounds, an external microphone and a pickup are connected to the computer when the program is executed and functions as a tuning device. Thus, it only needs to function as the input means. Of course, there is no problem if the computer is provided from the beginning.

  Further, by executing this computer program using existing hardware resources, the configuration of the tuning apparatus defined in claims 1 and 2 as a new application can be easily executed by using existing hardware. . Further, by recording such a computer program on the above-described recording medium, it can be easily distributed and sold as a software product. In addition, the configuration of the recording medium may be the configuration of an internal storage device such as RAM or ROM, or the configuration of an external storage device such as a hard disk, in addition to the above-described format, and such a program is recorded there. Needless to say, it is included in the recording medium defined in the present invention.

  Note that the function of executing a part of the processing described in claims 3 to 4 described later may be a function incorporated in a computer (a function incorporated in a computer in hardware, A function realized by an operating system or other application program incorporated in the computer), and the program includes an instruction for calling or linking a function achieved by the computer. Also good.

  This is because a part of each means defined in claims 3 to 4 is substituted by a part of a function achieved by an operating system, for example, and a program or a module for realizing the function is directly Although it is not recorded, the configuration is substantially the same if some of the functions of the operating system that achieve these functions are called or linked.

  In addition to being a target for use, the program is recorded on a recording medium and distributed or sold as will be described later, or transmitted by communication or the like so that it can be transferred.

Of these, the configuration of claim 3 corresponds to the configuration of claim 1 described above.
By being loaded and executed on a computer,
Input means connected to the computer for inputting musical tones of a musical instrument;
Frequency extraction means for extracting the frequency from the input musical sound;
Storage means for storing the fundamental frequency of each instrument;
A musical sound generating means for generating a musical sound based on a specified frequency;
The fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means out of the fundamental frequency for each instrument stored in the storage means, and the frequency and the frequency extraction means are extracted. A comparison means for comparing the frequency;
From the fundamental frequency of each musical instrument stored in the storage means, the fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means, and the musical tone generation means is configured to generate a musical tone. In the comparison by the comparison means, if the frequency of the fundamental tone of any musical instrument read from the storage means by the user's designation matches the frequency extracted from the frequency extraction means, the musical tone generation means generates the musical sound. A computer program for causing the computer to function as control means for stopping.

In addition, the configuration of claim 4 corresponds to the configuration of claim 2 described above.
By being loaded and executed on a computer,
Input means connected to the computer for inputting musical tones of a musical instrument;
Voltage value extraction means for extracting a voltage value corresponding to the input frequency from the input musical sound;
Storage means for storing a voltage value corresponding to the frequency of the fundamental tone for each instrument;
A musical sound generating means for generating a musical sound based on a specified voltage value;
Among the voltage values corresponding to the fundamental frequency of each musical instrument stored in the storage means, a voltage value corresponding to the fundamental frequency of any musical instrument designated by the user is read from the storage means, and the voltage Comparing means for comparing the value with the voltage value extracted from the voltage value extracting means;
Among the voltage values corresponding to the fundamental frequency of each musical instrument stored in the storage means, a voltage value corresponding to the fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means, and the musical tone is read out. In the comparison by the comparison means, a voltage value corresponding to the frequency of the fundamental tone of an arbitrary musical instrument read from the storage means and extracted from the voltage value extraction means in the comparison by the comparison means is generated by the generation means. A computer program that causes the computer to function as control means for stopping generation of musical sound by the musical sound generation means when the voltage values match.

  According to the tuning device and the computer program for tuning according to the first to fourth aspects of the present invention, the user who is a player can perform a tuning operation by an auditory method, not visually, without losing his posture. Depending on the sound, it is possible to achieve an excellent effect of being able to perform tuning.

  When performing with an orchestra or the like, the tuning is adjusted to the oboe, but the configuration of the present invention can also be used when adjusting to a sound other than one's own instrument.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a circuit diagram showing a circuit configuration of an electronic musical instrument (for example, an electronic organ).

  As shown in the figure, the electronic musical instrument includes a CPU 202, a ROM 204, a RAM 206, a keyboard scan circuit 208a, a panel scan circuit 210a, a musical tone generation circuit 16, a microphone and a pickup described later, and the like via a system bus 200. An A / D conversion circuit 11b for inputting a musical sound input of the input unit 10 from an analog state to a digital state is connected to each other.

  The system bus 200 is used for transmitting and receiving address signals, data signals, control signals, and the like (signal bus composed of an address bus, a data bus, and a control signal line).

  The CPU 202 is a central processing unit that controls the electronic musical instrument, and controls the keyboard scan circuit 208a and the panel scan circuit 210a according to a program stored in the ROM 204, which will be described later. By scanning the mode setting keys and various setting switches (including the upper left button to be described later) and sending performance information associated with key depression / release of the keyboard 208 to an assignment memory (not shown), these musical sounds Control is performed so that a desired musical tone signal is generated from the musical tone generation circuit 16 according to the assignment processing to the generation circuit 16 (configured by a sound source or the like), the mode setting of the operation panel 210, various function selection setting switches, and the volume. Further, when the tuning mode is selected at the time of mode setting by the operation panel 210 and the tuning device according to the configuration of the present invention to be described later is configured, the frequency extraction unit 12a that extracts the frequency of the input musical sound is selected in the tuning mode. The comparison unit 18 for comparing whether or not the frequency of the fundamental tone read corresponding to the musical instrument matches the extracted frequency, and the frequency of the fundamental tone read corresponding to the selected musical instrument A musical sound generation instruction is sent to generate a musical sound from the musical sound generation circuit 16 and the fundamental tone of the instrument is emitted to the outside. When the comparison unit 18 determines that the two frequencies to be compared match, the musical sound is generated. The configuration of the control unit 20 that stops generation is configured by the CPU 202.

  The ROM 204 is a read-only memory in which the control program for the electronic musical instrument for the CPU 202 described above and a tuning mode program module for carrying out the present invention are stored. In addition, the CPU 202 stores various parameter data that the CPU 202 refers to the generation of musical sounds. Among them, a storage area for the frequency storage unit 14a that stores the frequencies of the fundamental sounds of various musical instruments when the module is operated is configured. ing.

  The RAM 206 is a readable / writable memory that temporarily stores data at a processing stage in the program processing in the CPU 202 or stores parameter data that can be edited. In addition, a register, a counter, a flag function, and the like are defined in this RAM as necessary. Furthermore, the musical tone frequency extracted by the frequency extraction unit 12a described later is temporarily stored, and the comparison unit 18 outputs the frequency for comparison processing.

  The keyboard scan circuit 208a is a circuit that detects key press data generated by the keyboard 208 and sends it out as performance information.

  The performance information from the keyboard scan circuit 208a is sent to the tone generation circuit 16 corresponding to each channel in the performance mode by the CPU 202 referring to the mode setting flag on the RAM 206.

  The panel scan circuit 210a scans each switch on the operation panel 210 in response to a command from the CPU 202, and each switch corresponds to 1 bit based on a signal indicating the open / closed state of each switch obtained by this scan. Create the panel data. Each bit represents, for example, “1” indicating a switch-on state, and “0” indicating a switch-off state. This panel data is sent to the CPU 202 via the system bus 200. This panel data is used to determine whether an on event or an off event of a switch on the operation panel 210 has occurred. Various mode setting flags on the RAM 206 are set by setting the operation panel 210.

In addition, when a tuning mode to be described later is selected using the operation panel 210, a selection screen for a musical instrument to be tuned is displayed on the LCD on the operation panel. It has a mode setting switch and an LCD or LED display for displaying the setting state (not shown).
Therefore, the panel scan circuit 210a sends the display data sent from the CPU 202 to the LED display and the LCD on the operation panel 210. Accordingly, the LED display is turned on / off according to the data sent from the CPU 202, and a message is displayed on the LCD.

  Further, the A / D conversion circuit 11b is an analog-digital converter that converts the musical tone of the musical instrument input from the input unit 10 including a microphone or a pickup through the band limiting filter 11a into a digital musical tone signal. is there.

  The band limiting filter 11a is a filter that cuts a higher harmonic frequency band than the fundamental tone in the input musical sound signal.

  The tone generation circuit 16 is a tone generator designed with a tone generator LSI and a waveform memory (not shown), and has a function of generating a tone. Here, an arbitrary readout signal is generated based on the key depression data input from the keyboard 208, the original waveform data stored in the waveform memory is read out based on the readout signal, and inter-sample interpolation processing, Then, filter processing, envelope addition processing, etc. are performed to generate and output predetermined waveform data.

  The output of the tone generation circuit 16 is input to a D / A conversion circuit 17a, converted from digital to analog, amplified by an amplifier 17b, and released as a tone from the speaker 17c.

  The D / A conversion circuit 17a is a digital-analog converter that converts the digital tone signal generated by the tone generation circuit 16 into an analog tone signal.

  The amplifier 17b is a power amplifier that amplifies an analog musical sound signal that has been subjected to analog processing in order to be generated by the speaker 17c.

  The speaker 17c is a speaker that emits an analog signal as an audible signal.

  FIG. 2 shows a case where the tuning mode program module is read from the ROM 204 and executed by the CPU 202 when the tuning mode is selected by the operation panel 210 in the mode selection of the electronic musical instrument. It is a functional block diagram of the structure of the tuning apparatus which concerns on one Example structure. The configuration of the present invention includes an input unit 10, a frequency extraction unit 12a, a frequency storage unit 14a, a tone generation circuit 16, a comparison unit 18, and a control unit 20, as shown in FIG. .

  The input unit 10 includes a microphone (other pickup may be used) connected to an I / O interface (not shown) of the electronic musical instrument, and is configured to input musical sounds of the musical instrument to be tuned. The user (player) inputs the fundamental tone (open string sound) of the musical instrument. If the computer is configured to be the computer tuning device by being read and executed by the computer, the configuration of the input unit 10 is not necessarily provided from the beginning, so the above program is executed, When functioning as a tuning device, an external microphone or pickup may be connected to the computer so as to function as the input unit 10.

  The frequency extraction unit 12a is constituted by the CPU 202, and extracts the frequency of the musical tone of the musical instrument to be tuned from the input unit 10 via the band limiting filter 11a and the A / D conversion circuit 11b.

  The frequency extraction process in the frequency extraction unit 12a is obtained at a pitch frequency f = 1 / T from the fundamental waveform input in the state shown in FIG. 3 after the harmonic band is cut by the band limiting filter 11a. Will be.

  The frequency storage unit 14a is based on the ROM 204, and is configured to store the frequency of the fundamental tone (open string sound) for each musical instrument. Here, the fundamental tone of the instrument that can be selected in the tuning mode is stored.

  In the present embodiment, the musical tone generation circuit 16 uses the musical tone generation circuit 16 of the electronic musical instrument as it is. Here, based on the type of musical instrument selected by the user (player), the frequency of the fundamental tone corresponding to the musical instrument is read from the frequency storage unit 14a, and the read frequency is set according to an instruction from the control unit 20 described later. A corresponding read signal is generated, and based on the read signal, the original waveform data stored in the waveform memory is read, and inter-sample interpolation processing, filter processing, envelope addition processing, and the like are performed to obtain predetermined waveform data. Generate and output. When the configuration of the present invention is executed by a program read into a personal computer instead of the configuration of the electronic musical instrument of the present embodiment, for example, the CPU, RAM of the personal computer and a recording medium storing the fundamental frequency data of the musical instrument, etc. Will be composed.

  The comparison unit 18 is also composed of the CPU 202, and the fundamental frequency of an arbitrary instrument designated by the user (player) is selected from the fundamental frequencies for each instrument stored in the frequency storage unit 14a. In addition to reading from the frequency storage unit 14a, the frequency is compared with the frequency extracted from the frequency extraction unit 12a.

  The control unit 20 is also composed of the CPU 202, and selects the frequency of the fundamental tone (open string tone) of an arbitrary instrument designated by the user from the fundamental frequency of each instrument stored in the frequency storage unit 14a. , Read out from the frequency storage unit 14a and cause the musical tone generation circuit 16 to generate a musical tone, and in the comparison by the comparison unit 18, the fundamental tone of an arbitrary instrument read out from the frequency storage unit 14a as specified by the user When it is determined that the frequency and the frequency extracted from the frequency extraction unit 12a match, the musical sound generation circuit 16 has a function of stopping the musical sound generation.

  In the configuration of the above embodiment, when the mode of the electronic musical instrument is selected, the control unit 20 is selected when the tuning mode is selected by the user (player) and the type of musical instrument to be tuned is selected. The frequency of the fundamental tone (open string sound) of the musical instrument is read from the frequency storage unit 14a, and predetermined waveform data corresponding to the read frequency is generated and output from the musical tone generation circuit 16.

  On the other hand, the user (player) plays the open string sound of the musical instrument to be tuned in accordance with the output musical sound, and inputs it to the electronic musical instrument from the input unit 10.

  The frequency of the fundamental tone (open string sound) is extracted from the musical tone signal input by the input unit 10 through the band limiting filter 11a and the A / D conversion circuit 11b and by the frequency extraction unit 12a.

  The comparison unit 18 compares the frequency of the open string sound of the musical instrument to be tuned extracted by the frequency extraction unit 12a with the frequency of the fundamental tone of the corresponding instrument read from the frequency storage unit 14a. The comparison result is always input to the control unit 20, and in the comparison, if both frequencies match, the control unit 20 stops the tone generation by the tone generation circuit 16.

  Therefore, the user (player) can perform the tuning work by relying on the musical sound output from the musical sound generation circuit 16 without breaking his posture.

  4 to 6 are flowcharts showing the processing flow of the electronic musical instrument. FIG. 4 shows the main flow of the electronic musical instrument.

  In the figure, it is activated by turning on the power. That is, when the power is turned on, first, initialization processing is performed (step S100). This initialization process is a process of setting the internal state of the CPU 202 to the initial state and setting the buffers, registers, counters, flags, and the like defined in the RAM 206 to the initial state.

  When this initialization process is completed, a key scan process is then performed (step S102). This key scan process is a process of taking key press data from a key switch matrix (not shown) of the keyboard scan circuit 208a and creating a key event map. In the tuning mode, the control unit 20 generates key press data corresponding to the generation of the open string sound of the designated musical instrument or the instruction to stop the generation.

  That is, in the key scan process, the key switch matrix is scanned, and key press data (hereinafter referred to as “new key press data”) including a bit string indicating ON / OFF of each key is read.

  Next, the key pressing data (hereinafter referred to as “old key pressing data”) read from the previous key switch matrix and stored in the RAM 206 in the same manner as described above is compared with the new key pressing data, and the different bits are set. A key event map that is turned on is created. If there is a bit that is turned on in this key event map, it is determined that a key switch event has occurred.

  Next, it is checked whether or not there is a key switch event (step S104). This is done by referring to the key event map. If it is determined that any key switch event has occurred, key event processing is performed (step S106). This key event processing is to perform sound generation processing associated with key depression or mute processing associated with key release. In the tuning mode, the control unit 20 causes the tone generation circuit 16 to generate or stop the tone.

  Next, a panel scan process is performed (step S108). The panel scan process is a process of taking panel data from the operation panel 210 and creating a panel event map. This is done as follows. That is, first, the operation panel 210 is scanned by the panel scan circuit 210a, and panel data indicating ON / OFF of each switch (hereinafter referred to as “new panel data”) is read.

  Then, in the same manner as described above, the panel data (hereinafter referred to as “old panel data”) that has been read from the panel scan circuit 210a and stored in the RAM 206 is compared with the new panel data, and the different bits are turned on. Panel event map is created. If there is a bit that is turned on in this panel event map, it is determined that a panel switch event has occurred.

  Next, it is checked whether there is a panel switch event (step S110). This is done by referring to the panel event map. Here, if it is determined that any panel switch event has occurred, panel event processing is performed (step S112). This panel event process is performed according to the switch operation of the operation panel 210. Details of the panel event processing will be described later.

  When the panel event process ends or when it is determined in step S110 that there is no panel switch event, the process returns to step S102 and the same process is repeated. As described above, when an event corresponding to a panel operation or a keyboard operation occurs in the process of repeatedly executing steps S102 to S112 of the main routine, various functions of the electronic musical instrument are realized by performing processing corresponding to the event. ing.

  Next, details of the panel event processing will be described with reference to the flowchart shown in FIG. This panel event processing routine is called when it is determined in the main routine that a panel switch event has occurred.

  In the panel event process, first, it is checked whether or not a tuning mode has been selected on the operation panel 210 (step S200). If the mode is not selected (step S200; N), the process proceeds to another panel event process (step S210).

  On the contrary, when the tuning mode is selected (step S200; Y), musical instrument candidates to be tuned are displayed, and the selection screen is changed (step S202).

  When the user (player) selects an instrument to be tuned according to the display (step S204), it is checked whether or not the instrument is selected by the panel scan circuit 210a (step S206). If no instrument is selected (step S206; N), the process returns to step S202 to change to the instrument selection screen, and the above processing is repeated.

  On the other hand, when an instrument is selected (step S206; Y), tuning processing according to the configuration of this embodiment described later is performed (step S208).

  After the tuning process or when the mode is not selected in the tuning mode check process (step S200; N), the process proceeds to another panel event process (step S210). After these processes are performed, the process returns to the main process routine.

  FIG. 6 is a flowchart showing the process flow of the tuning process in step S208 of FIG.

  First, the control unit 20 reads the frequency of the fundamental tone (open string sound) of the musical instrument selected by the user (player) in the tuning mode from the frequency storage unit 14a (step S300). Then, an instruction is issued from the control unit 20, and predetermined waveform data corresponding to the read frequency is generated from the tone generation circuit 16 and output as a tone (step S302).

  On the other hand, the user (player) plays the open string sound of the musical instrument to be tuned in accordance with the output musical sound. At that time, the open string sound is input from the input unit 10 to the electronic musical instrument through the input unit 10.

  The musical tone signal input from the input unit 10 passes through the band limiting filter 11a and the A / D conversion circuit 11b, and the frequency extraction unit 12a extracts the frequency of the fundamental tone (open string sound) (step S304).

  In the comparison unit 18, the frequency of the open string sound of the musical instrument to be tuned extracted by the frequency extraction unit 12 a is compared with the frequency of the fundamental tone of the corresponding instrument read from the frequency storage unit 14 a, and both frequencies are obtained. Whether or not they match is checked by the comparison unit 18 (step S306). If these frequencies do not match (step S306; N), the process returns to step S302 and the above processing is repeated. In other words, the open string sound of the instrument continues to sound.

  On the other hand, if both frequencies match (step S306; Y), the controller 20 stops the tone generation of the tone generation circuit 16 (step S308), and the tuning is completed. After the above processing is performed, the process returns to return to the panel event processing routine.

  7-9 is explanatory drawing which shows the above 2nd Embodiment structure of this invention. The difference from the first embodiment is that tuning is not performed with the frequency of the fundamental tone (open string tone), but a voltage corresponding to the fundamental tone frequency is obtained from the input unit 10 based on the fact that a corresponding voltage is obtained. The converted signal is converted into a voltage by the F / V converter 11c, the voltage values are compared, whether or not the pitches match is compared, and if they match, the tone generation / output is stopped. It is to have done.

  The configuration of the present embodiment will be described in detail. An input unit 10 for inputting musical sounds of musical instruments, a voltage value extracting unit 12b for extracting voltage values corresponding to the input frequencies from the input musical sounds, and a fundamental tone for each musical instrument. A voltage value storage unit 14b that stores a voltage value corresponding to the frequency of the sound, a musical tone generation circuit 16 that generates a musical tone based on the specified voltage value, and each instrument stored in the voltage value storage unit 14b. The voltage value corresponding to the frequency of the fundamental tone of an arbitrary instrument designated by the user is read out from the voltage value storage unit 14b from among the voltage values corresponding to the frequency of the fundamental tone. The comparison unit 18 that compares the voltage value extracted from the unit 12b, and any musical instrument specified by the user from the voltage values corresponding to the fundamental frequency for each musical instrument stored in the voltage value storage unit 14b Fundamental frequency Is read from the voltage value storage unit 14b to cause the tone generation circuit 16 to generate a tone, and read from the voltage value storage unit 14b by the user's designation in the comparison by the comparison unit 18. A control unit 20 for stopping the tone generation by the tone generation circuit 16 when the voltage value corresponding to the frequency of the fundamental tone of the given musical instrument matches the voltage value extracted from the voltage value extraction unit 12b; Have at least.

  In the configuration of the present embodiment, actually, an F / V converter 11c that converts the frequency of the input signal into a voltage value between the input unit 10 and the voltage value extraction unit 12b, and an analog signal indicating the voltage value are provided. An A / D converter 11d for converting to a digital signal is connected, and the above processing is performed until the voltage value is extracted from the input of the actual musical sound.

  FIG. 8 shows the relationship between the frequency and the voltage value when the signal input at the input unit 10 is extracted as a voltage value by the voltage value extraction unit 12b via the F / V converter 11c and the A / D converter 11d. It is a graph which shows a relationship. As shown in the figure, it can be seen that the input voltage value Vin is obtained with respect to the input frequency fin.

  In the above configuration, the configuration different from the first embodiment is the configuration of the F / V converter 11c, the A / D converter 11d, the voltage value extraction unit 12b, and the voltage value storage unit 14b, and the other configurations are the same as those of the first embodiment. Therefore, the description is omitted.

  Dedicated F / V converter 11c and A / D converter 11d are used. The voltage value extraction unit 12 b is configured by the CPU 202, and the voltage value storage unit 14 b is configured by the ROM 204.

  In the configuration of the above embodiment, when the mode of the electronic musical instrument is selected, when the tuning mode is selected by the user (player) and the type of musical instrument to be tuned is selected, the control unit 20 selects the selected musical instrument. A voltage value corresponding to the frequency of the fundamental tone (open string sound) is read from the voltage value storage unit 14b, and predetermined waveform data having a frequency corresponding to the read voltage value is generated from the tone generation circuit 16. , Output.

  On the other hand, the user (player) plays the open string sound of the musical instrument to be tuned in accordance with the output musical sound, and inputs it to the electronic musical instrument from the input unit 10.

  The musical sound signal input from the input unit 10 passes through the F / V converter 11c and the A / D converter 11d, and the voltage value extraction unit 12b extracts a voltage value corresponding to the fundamental (open string sound) frequency.

  In the comparison unit 18, the voltage value corresponding to the frequency of the open string sound of the musical instrument to be tuned extracted by the voltage value extraction unit 12b and the frequency of the fundamental tone of the selected musical instrument read from the voltage value storage unit 14b. The voltage value to be compared is compared. The comparison result is always input to the control unit 20, and when the two voltage values match in the comparison, the control unit 20 stops the tone generation by the tone generation circuit 16.

  Therefore, the user (player) can perform the tuning work by relying on the musical sound output from the musical sound generation circuit 16 without breaking his posture.

  FIG. 9 is a flowchart showing a processing flow of tuning processing when the tuning mode is selected in the configuration of the second embodiment.

  First, the control unit 20 reads a voltage value corresponding to the frequency of the fundamental tone (open string sound) of the musical instrument selected by the user (player) in the tuning mode from the voltage value storage unit 14b (step S400). Then, an instruction is issued from the control unit 20, and predetermined waveform data having a frequency corresponding to the read voltage value is generated from the tone generation circuit 16 and output as a tone (step S402).

  On the other hand, the user (player) plays the open string sound of the musical instrument to be tuned in accordance with the output musical sound. At that time, the open string sound is input from the input unit 10 to the electronic musical instrument through the input unit 10.

  The musical sound signal input from the input unit 10 passes through the F / V converter 11c and the A / D converter 11d, and the voltage value extraction unit 12b extracts a voltage value corresponding to the fundamental (open string sound) frequency (step). S404).

  In the comparison unit 18, the voltage value corresponding to the open string sound frequency of the musical instrument to be tuned extracted by the voltage value extraction unit 12b and the voltage value corresponding to the fundamental frequency of the selected musical instrument read from the voltage value storage unit 14b. And the comparison unit 18 checks whether or not both voltage values match (step S406). If these voltage values do not match (step S406; N), the process returns to step S402 and the above processing is repeated. In other words, the open string sound of the instrument continues to sound.

  On the other hand, if both voltage values match (step S406; Y), the control unit 20 stops the tone generation of the tone generation circuit 16 (step S408), and the tuning is completed. After the above processing is performed, the process returns to return to the panel event processing routine.

  Note that the tuning device of the present invention is not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the scope of the present invention.

  For example, when it is detected that the pitch of the open string sound of the musical instrument has changed again after the generation of the musical sound stops, the sound may be regenerated. In addition, when there are a plurality of strings to be tuned, such as a violin, such as A-line, D-line, G-line, and E-line, for example, a violin, It can also be configured such that the next fundamental tone is produced by depressing the pedal of the instrument.

  The tuning device of the present invention can be provided as a program that is incorporated into an electronic musical instrument and loaded into a personal computer. In addition, it is also possible to incorporate it into the instrument itself and use it only during tuning.

1 is a circuit diagram showing a circuit configuration of an electronic musical instrument used in Example 1. FIG. It is a functional block diagram of the structure of the tuning apparatus which concerns on one Example structure of this invention. It is explanatory drawing which shows how to obtain | require pitch frequency f from the input waveform of the input fundamental sound. 3 is a flowchart showing a main flow of the electronic musical instrument in Embodiment 1. 4 is a flowchart showing the process flow of the panel event process in step S112. 5 is a flowchart showing a processing flow of tuning processing in step S208. It is a functional block diagram of the structure of the tuning apparatus which concerns on the 2nd Embodiment structure of this invention used in the same electronic musical instrument. It is a graph which shows the relationship between the frequency and voltage value when the signal input by the input part 10 is finally extracted as a voltage value in the voltage value extraction part 12b. 12 is a flowchart illustrating a processing flow of tuning processing when a tuning mode is selected in the configuration of the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Input part 11a Band-limiting filter 11b A / D converter circuit 11c F / V converter 11d A / D converter 12a Frequency extraction part 12b Voltage value extraction part 14a Frequency storage part 14b Voltage value storage part 16 Musical tone generation circuit 17a D / A conversion Circuit 17b Amplifier 17c Speaker 18 Comparison unit 20 Control unit 200 System bus 202 CPU
204 ROM
206 RAM
208 Keyboard 208a Keyboard Scan Circuit 210 Operation Panel 210a Panel Scan Circuit

Claims (4)

Input means for inputting musical sounds of musical instruments;
Frequency extraction means for extracting the frequency from the input musical sound;
Storage means for storing the fundamental frequency of each instrument;
A musical sound generating means for generating a musical sound based on a specified frequency;
The fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means out of the fundamental frequency for each instrument stored in the storage means, and the frequency and the frequency extraction means are extracted. A comparison means for comparing the frequency;
From the fundamental frequency of each musical instrument stored in the storage means, the fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means, and the musical tone generation means is configured to generate a musical tone. In the comparison by the comparison means, if the frequency of the fundamental tone of any musical instrument read from the storage means by the user's designation matches the frequency extracted from the frequency extraction means, the musical tone generation means generates the musical sound. A tuning device comprising at least control means for stopping. Input means for inputting musical sounds of musical instruments;
Voltage value extraction means for extracting a voltage value corresponding to the input frequency from the input musical sound;
Storage means for storing a voltage value corresponding to the frequency of the fundamental tone for each instrument;
A musical sound generating means for generating a musical sound based on a specified voltage value;
Among the voltage values corresponding to the fundamental frequency of each musical instrument stored in the storage means, a voltage value corresponding to the fundamental frequency of any musical instrument designated by the user is read from the storage means, and the voltage Comparing means for comparing the value with the voltage value extracted from the voltage value extracting means;
Among the voltage values corresponding to the fundamental frequency of each musical instrument stored in the storage means, a voltage value corresponding to the fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means, and the musical tone is read out. In the comparison by the comparison means, a voltage value corresponding to the frequency of the fundamental tone of an arbitrary musical instrument read from the storage means and extracted from the voltage value extraction means in the comparison by the comparison means is generated by the generation means. A tuning apparatus comprising at least control means for stopping the tone generation by the tone generation means when the voltage value matches. By being loaded and executed on a computer,
Input means connected to the computer for inputting musical tones of a musical instrument;
Frequency extraction means for extracting the frequency from the input musical sound;
Storage means for storing the fundamental frequency of each instrument;
A musical sound generating means for generating a musical sound based on a specified frequency;
The fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means out of the fundamental frequency for each instrument stored in the storage means, and the frequency and the frequency extraction means are extracted. A comparison means for comparing the frequency;
From the fundamental frequency of each musical instrument stored in the storage means, the fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means, and the musical tone generation means is configured to generate a musical tone. In the comparison by the comparison means, if the frequency of the fundamental tone of any musical instrument read from the storage means by the user's designation matches the frequency extracted from the frequency extraction means, the musical tone generation means generates the musical sound. A computer program for causing the computer to function as control means for stopping. By being loaded and executed on a computer,
Input means connected to the computer for inputting musical tones of a musical instrument;
Voltage value extraction means for extracting a voltage value corresponding to the input frequency from the input musical sound;
Storage means for storing a voltage value corresponding to the frequency of the fundamental tone for each instrument;
A musical sound generating means for generating a musical sound based on a specified voltage value;
Among the voltage values corresponding to the fundamental frequency of each musical instrument stored in the storage means, a voltage value corresponding to the fundamental frequency of any musical instrument designated by the user is read from the storage means, and the voltage Comparing means for comparing the value with the voltage value extracted from the voltage value extracting means;
Among the voltage values corresponding to the fundamental frequency of each musical instrument stored in the storage means, a voltage value corresponding to the fundamental frequency of an arbitrary musical instrument designated by the user is read from the storage means, and the musical tone is read out. In the comparison by the comparison means, a voltage value corresponding to the frequency of the fundamental tone of an arbitrary musical instrument read from the storage means and extracted from the voltage value extraction means in the comparison by the comparison means is generated by the generation means. A computer program for causing the computer to function as control means for stopping generation of musical sound by the musical sound generation means when the voltage values match.

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