JP4275762B2 - Voice instruction device and karaoke device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a voice instruction apparatus and a karaoke apparatus capable of performing command input, tempo, key setting, and the like by voice input from a microphone.
[0002]
[Prior art]
In order to use the karaoke device, operations such as music selection and performance start are necessary, but in recent years, with the enhancement of the functionality of karaoke devices, various operations for using new functions other than music selection and performance start are required. It is necessary. Conventionally, the above operation is performed by turning on a button of an infrared remote control device or a panel switch of the device main body.
[0003]
[Problems to be solved by the invention]
However, if many functions are to be operated with an infrared remote controller or a panel switch of the apparatus main body, it is necessary to increase the number of buttons or to define a complicated key sequence. In order to increase the number of buttons, it is necessary to modify the hardware, which cannot be easily performed, and there are problems such as cost increase and time taken for response. Further, when trying to operate a new function with a key sequence, the key sequence becomes complicated and the key operation becomes troublesome.
[0004]
An object of the present invention is to provide a voice instruction apparatus and a karaoke apparatus that can operate various functions by a voice signal input from a microphone.
[0005]
[Means for Solving the Problems]
  The invention of claim 1 of this application isMultiple consecutiveAudio signaleachMusic elementsIs a combination ofThe command pattern table storing the command pattern and the processing content corresponding to the command pattern in correspondence with each other, and searching the command pattern table with a plurality of music elements detected from the audio signal input from the microphone, and the matched command And a control unit that executes processing corresponding to the command pattern when the pattern is extracted.
[0006]
The invention of claim 2 of this application is characterized in that, in the invention of claim 1, the music element is a pitch, volume or tempo of an audio signal.
[0007]
  The karaoke apparatus which is the invention of claim 3 of this application,The voice instruction device according to claim 1 or 2 is provided.
[0009]
In the first aspect of the invention, the music element can be a frequency, volume, temporal element, or the like. The frequency may be a continuous value expressed in hertz or a stepped pitch. As a temporal element, a time interval between sound generation start timings of a plurality of audio signals, a length of one audio signal, or the like can be used.
[0010]
A command pattern using these music elements is configured as follows, for example.
[0011]
Pitch data sequence and volume data sequence extracted from multiple audio signals
Time interval (tempo) and frequency interval (pitch) between multiple audio signals
Combination of pitch data, volume data, etc. extracted from one audio signal.
[0012]
That is, the plurality of music elements of the command pattern may be one type of music element sequence extracted from a plurality of continuous audio signals, or may be a plurality of music element groups extracted from one audio signal. The command pattern table stores processing contents for controlling a device such as a karaoke device corresponding to these command patterns. As processing contents, for example, when the present invention is applied to a karaoke device, a function other than karaoke performance that can be executed by the karaoke device (contents such as games and fortune-telling), operations in each content such as character actions in the game function, etc. There is. According to the present invention, when such a function that the conventional karaoke apparatus does not have is added, it can be operated by voice input from the microphone without adding a hardware operation button.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
A karaoke apparatus according to an embodiment of the present invention will be described with reference to the drawings. This karaoke apparatus has a singing scoring function. The singing scoring function scores the pitch, volume, and rhythm of a user by comparing the user's singing voice signal with reference data, and displays the score after the singing ends. This scoring function is executed by the audio signal processing unit 50.
[0016]
The karaoke apparatus has a voice command function. The voice command function is a function that allows the user to operate the karaoke device by inputting voice from the microphone 47 when the karaoke song is not being played. There are three types of voice command functions: a pitch command function, a volume command function, and a tempo command function. The pitch, volume, and tempo are determined by the voice signal processing unit 50 in the same manner as the scoring function. When a plurality of audio signals are continuously input from the microphone 47 when the karaoke performance is not being performed, the audio signal processing unit 50 detects a music element such as a pitch, volume, or tempo. It is determined whether the arrangement pattern of the music elements matches any of the command patterns stored in the command pattern table, and when there is a match, the command (processing) indicated by the command pattern is executed.
[0017]
FIG. 1 is a block diagram of the karaoke apparatus. FIG. 2 is a block diagram of the RAM 32, hard disk 37 and music data of the karaoke apparatus.
In FIG. 1, a CPU 30 for controlling the operation of the entire apparatus includes a ROM 31, a RAM 32, a hard disk storage device (HDD) 37, a communication control unit 36, a remote control receiving unit 33, a display panel 34, a panel switch 35, a sound source via a bus. A device 38, an audio data processing unit 39, a control amplifier 40, a character display unit 43, a CD-ROM changer 44, a display control unit 45, and an audio signal processing unit 50 are connected.
[0018]
The ROM 31 stores an activation program necessary for activating this apparatus. A system program for controlling the operation of the apparatus, a karaoke execution program, and the like are stored in the HDD 37, and are read into the RAM 32 by the startup program when the apparatus is turned on. Various storage areas such as an area for storing these programs are set in the RAM 32 as shown in FIG. 2A, the RAM 32 has a program storage area 320 for storing a program read from the hard disk 37, an execution data storage area 321 for storing song data of a karaoke song being played, reference data in the song data, and A point storage area 322 for storing points obtained by comparing with a singing voice signal, a command pattern table 323 for storing command patterns of the voice command function, and the like are provided. The program and command pattern table are read from the hard disk 37 when the power is turned on, and the music data in the execution data storage area 321 is read from the hard disk 37 when the music is selected by the user.
[0019]
In addition, as shown in FIG. 2B, the HDD 37 has a program storage area 370 for storing the system program and application program, a music data file 371 for storing thousands of music data, a command pattern table 372, and the like. Is set. Reference data for scoring the user's karaoke song is included in the song data of each karaoke song. The communication control unit 36 downloads music data and the like from the host station via the ISDN line, and writes the music data directly into the HDD 37 without using the CPU 30 using the built-in DMA circuit.
[0020]
Ordinary commands such as song selection and karaoke song start are input from the infrared remote controller 51. The remote control receiving unit 33 receives the infrared signal sent from the remote control 51 and restores the data. The remote controller 51 includes a command switch such as a music selection switch, a numeric keypad switch, and the like. When the user operates these switches, the remote controller 51 transmits an infrared signal modulated with a code corresponding to the operation. The display panel 34 is provided on the front side of the karaoke apparatus, and displays the currently playing song code, the number of reserved songs, and the like. The panel switch 35 is provided in the front operation unit of the karaoke apparatus, and includes a tempo change switch, a key change switch, and the like.
[0021]
In FIG. 2C, the music data is composed of a header, a musical sound track, a guide melody track, a lyrics track, a voice control track, an effect track, and a voice data section. The header is a portion in which various data relating to the music data is written, and data such as a music title, genre, release date, and performance time (length) of the music is written.
[0022]
Each track from the musical sound track to the effect track is composed of a plurality of event data and sequence data including duration data Δt indicating a time interval between the event data. The CPU 30 reads the data of all tracks in parallel based on the sequence program during karaoke performance. The sequence program is a program that counts Δt with a predetermined tempo clock, reads the event data that follows when Δt is counted up, and outputs the event data to a predetermined processing unit.
[0023]
The musical sound track is formed with various parts such as a melody track and a rhythm track. In the guide melody track, the melody sequence data of the karaoke song, that is, the melody sequence data to be sung by the singer, is written. The CPU 30 generates reference pitch data and volume data based on this data and compares it with the singing voice.
[0024]
The lyrics track is a track that stores sequence data for displaying lyrics on the monitor 46. This sequence data is not musical sound data, but this track is also described in the MIDI data format in order to unify the implementation and facilitate the work process. The data type is a system exclusive message.
[0025]
The audio control track is a sequence track that designates the generation timing of audio data n (n = 1, 2, 3,...) Stored in the audio data portion. The voice data section stores voices such as back chorus and harmony singing that are difficult to synthesize by the sound source device 38. In the audio track, audio designation data and duration data Δt for designating the timing at which the audio data is read out, that is, the timing at which the audio data is output to the audio data processing unit 39 to form an audio signal are written. The voice designation data includes a voice data number, pitch data, and volume data. The audio data number is an identification number n of each audio data recorded in the audio data part. The pitch data and volume data are data for instructing the pitch and volume of audio data to be formed. In other words, back choruses such as “Ah” and “Wawa Wawa” without words can be used many times by changing the pitch and volume, so one data is stored at the basic pitch and volume. The pitch and volume are shifted based on the above and used repeatedly. The audio data processing unit 39 sets the output level based on the volume data, and sets the pitch of the audio signal by changing the reading interval of the audio data based on the pitch data.
[0026]
Effect control data for controlling the control amplifier 40 is written in the effect track. The control amplifier 40 gives a reverberation effect such as reverberation or a filter effect to the signals input from the sound source device 38 and the audio data processing unit 39. The effect control data is composed of data designating the kind of effect and data designating the degree thereof.
[0027]
In FIG. 1, when the performance of the karaoke song starts, the CPU 30 sequentially reads the event data of each track of the song data based on the tempo clock and inputs it to a predetermined operation unit. The event data of the musical tone track of the music data is input to the sound source device 38. Further, the event data of the guide melody track used as reference data is input to the audio signal processing unit 50. The event data of the effect track is input to the control amplifier 40. When the CPU 30 reads the event data of the lyrics track, a character pattern corresponding to the event data is formed on the VRAM of the character display unit 43. When the CPU 30 reads the event data of the audio control track, the audio data indicated by the event data is input to the audio data processing unit 39.
[0028]
The tone generator 38 forms a musical tone signal based on the musical tone track event data input from the CPU 30. As described above, the tone track is composed of a plurality of tracks, and the tone generator 38 simultaneously forms a plurality of parts of tone signals based on this data. The audio data processing unit 39 forms an audio signal having a specified length and a specified pitch based on the input audio data.
[0029]
The tone signal formed by the tone generator 38 and the sound signal formed by the sound data processing unit 39 are input to the control amplifier 40. The control amplifier 40 provides reverberation and filter effects to the karaoke performance sound. The type and degree of this effect are controlled by the event data of the effect track. A singing voice signal input from the singing microphone 47 is also input to the control amplifier 40. The control amplifier 40 gives reverberation and filter effects to this singing voice signal. The type and degree of this effect are also controlled by the event data of the effect track. The control amplifier 40 mixes the karaoke performance sound and the singing voice signal and outputs them to the speaker 42.
[0030]
On the other hand, the singing voice signal input from the singing microphone 47 is also input to the voice signal processing unit 50 via the control amplifier 40. The audio signal processing unit 50 divides the input singing audio signal into frames of 50 ms, and measures the average frequency and average volume for each frame. The CPU 30 scores the volume and pitch of the song by comparing the frequency data and volume data with reference data. In addition, the singing voice break is detected by reading the volume data of each frame, and the rhythm is scored based on the singing voice break. The difference between the singing volume data, frequency data, and rhythm data reference data is added as a negative point, and when the karaoke performance ends, each point is obtained by subtracting the negative point from the full score for each volume, pitch, and rhythm. Is calculated, and the total score is calculated by weighted averaging. The weighting is determined by the genre of the song. For example, pops increases the weight of rhythm, and enka increases the weight of pitch and volume. The audio signal processing unit 50 may be an external device, and the audio signal processing unit 50 itself may perform comparison with the reference pattern.
[0031]
On the other hand, when a voice signal is input from the microphone 47 when the karaoke performance is not being performed, the voice signal processing unit 50 detects the pitch, volume, rhythm, and the like of the voice signal and inputs them to the CPU 30. The CPU 30 compares the input pitch data, volume data, and rhythm data with the command pattern of the command pattern table, and executes the process of the matched command pattern.
[0032]
The character display unit 43 develops the character pattern data input from the CPU 30 on the VRAM and generates a video signal of lyrics. The CD-ROM changer 44 reproduces a predetermined background video based on the video selection data input from the CPU 30. The video selection data is determined based on the genre data of the karaoke song. The genre data is written in the header of the music data, and is read out by the CPU 30 when the karaoke performance is started. The CD-ROM changer 44 incorporates six CD-ROMs and can reproduce background images of about 120 scenes. The video signal of the character pattern and the video signal of the background video are input to the display control unit 45. The display control unit 45 synthesizes these video signals by superimposing and displays them on the monitor 46.
[0033]
FIG. 3 shows a flowchart of a pitch monitoring operation for executing the pitch command function of the voice command function and a pitch command pattern table. In the command pattern table of FIG. 5B, there are a plurality of command patterns consisting of three consecutive pitches (first pitch, second pitch, third pitch) together with corresponding commands (processing contents). It is registered. For example, command patterns A1, B1, and C1 correspond to command 1, command patterns A1, C1, and D1 correspond to command 2, and command patterns A1, E1, and G1 correspond to command 3. Each command (1 to n) is a command of processing contents such as a menu item selection function in an interactive function (content) that can be executed by a karaoke apparatus, for example. For example, command 1 is selection of a fortune telling function, command 2 is selection of a game function, command 3 is selection of a new music introduction function, command 4 is selection of a meal order function, and the like.
[0034]
In the flowchart of FIG. 5A, this operation is performed on the input from the microphone 47 while the karaoke performance is not being performed. Initially, the process waits at s1 until an audio signal is input. When an audio signal is input, the pitch of the audio signal is detected (s2). This pitch detection operation is executed by the audio signal processing unit 50. If the frequency of the audio signal is within an allowable range in which the pitch can be detected (s3), the detected pitch data is input to the CPU 30.
[0035]
When the pitch data is input to the CPU 30, the command pattern table of FIG. 5B is searched, and the first pitch among the command patterns consisting of the above three consecutive pitches is the pitch data of the voice signal. Are extracted (s4). If there is no command pattern in which the first pitch matches the pitch data, the process returns to s1 in the determination of s5. When the command pattern in which the first pitch matches the pitch data is extracted, the process waits at s6 and s7 until the next voice signal is input. The break of the audio signal is when the input audio signal clearly shifts to another pitch, or when the volume becomes a predetermined value or less. If the next sound signal is not input within a certain time (for example, about 1 second) after the first sound is interrupted, it is determined that the command pattern of three consecutive sounds is not input (s7), and the extraction of s4 is canceled. (S19), the process returns to s1.
[0036]
When the second sound signal is input (s6), the pitch of the sound signal is detected (s8). If the pitch cannot be detected, such as when the audio signal deviates significantly from the scale frequency, or if the frequency fluctuates and is not constant, the process proceeds to s19 with the determination of s9 as canceling the command and cancels the extraction of s4. And return to s1.
[0037]
When the pitch data of the second sound is detected and input to the CPU 30 from the voice signal processing unit 50, the second pitch of the command pattern in which the first pitch extracted in s4 matches is the second voice. A command pattern that matches the pitch data detected from the signal is extracted (s10). If there is no command pattern that matches the second pitch, the process proceeds to s19 with the determination of s11, cancels the extraction of s4, and returns to s1. When a command pattern that matches the second pitch is extracted, the process waits at s12 and s13 until the next voice signal (third sound) is input. If the third sound is not input for a certain time after the second sound is interrupted, it is determined that the command input is not three consecutive sounds (s13), the extraction of s10 is canceled (s19), and the process returns to s1.
[0038]
When the third sound signal is input (s12), the pitch of the sound signal is detected (s14). If the pitch cannot be detected, such as when the audio signal deviates significantly from the scale frequency, or if the frequency fluctuates and is not constant, the process proceeds to s19 with the judgment of s15 as not being a command input, and the extraction of s10 is canceled. And return to s1.
[0039]
When the pitch data of the third sound is detected and input to the CPU 30 from the voice signal processing unit 50, the third pitch of the command pattern in which the first pitch and the second pitch extracted in s10 match is found. A command pattern that matches the pitch detected from the third sound signal is extracted (s16). If there is no command with the same third pitch, the process proceeds to s19 by determining s17, cancels the extraction of s10, and returns to s1. When a command pattern having the same third pitch is extracted, the processing corresponding to the command pattern is read from the command pattern table and executed (s18). After execution, return to s1.
[0040]
In this example, all the commands are set to three sounds, but the commands may be other than three sounds, and may be mixed with three sounds having different numbers. In this case, a short command that matches the first half of the long command is not set.
[0041]
FIG. 4 shows a flowchart of a volume monitoring operation for processing the volume command function of the voice command functions and a command pattern table for the volume. In FIG. 5B, the command pattern table includes command patterns composed of large / small (first volume, second volume, third volume) of three consecutive sounds, together with corresponding commands (processing contents). Multiple registered. For example, the command pattern “large, large, large” corresponds to the command 1, the command pattern “large, small, large” corresponds to the command 2, and the command pattern “large, large, small” corresponds to the command 3. This voice command function may also be used for an interactive content menu selection function similar to the volume command function, or may be used for a function different from the voice command function.
[0042]
In the flowchart of FIG. 5A, this operation is performed on the input from the microphone 47 while the karaoke performance is not being performed. The process waits at s31 until the first sound signal is input. When the sound signal of the first sound is input, the volume of the sound signal is detected and the magnitude is determined (s32). The presence / absence of an audio signal is determined by a low threshold value, and the magnitude of the audio signal is determined by an intermediate threshold value. This sound volume determination operation is executed by the audio signal processing unit 50, and the detected sound volume determination data is input to the CPU 30.
[0043]
When the sound volume determination data is input to the CPU 30, the command pattern table in FIG. 5B is searched to extract a command pattern in which the sound volume determination data matches the first sound volume (s33). After extracting the command pattern having the same first volume, the process waits at s34 and s35 until the second sound signal is input. An audio signal break occurs when the volume falls below the low threshold. When the next sound signal (second sound) is not input for a certain period of time (for example, about 1 second) after the first sound is interrupted, it is determined that the command pattern of three consecutive sounds is not input (s35), and s33 is extracted. Is canceled (s45), and the process returns to s31.
[0044]
When the audio signal of the second sound is input (s34), the volume level of the audio signal is determined (s36). When the volume determination data of the second sound is input from the audio signal processing unit 50 to the CPU 30, a command whose second volume matches the volume determination data is extracted from the command pattern extracted in s33 (s38). If there is no command pattern in which the second sound volume matches the sound volume determination data in the command pattern, the process proceeds to s45 by the determination in s38, the extraction of s33 is canceled, and the process returns to s31. When one or a plurality of command patterns whose second volume matches the volume determination data are extracted, the process waits at s39 and s40 until the third sound signal is input. If the third sound is not input for a certain period of time after the second sound is interrupted, it is determined that the command pattern of three consecutive sounds is not input (s40), and the extraction of s37 is canceled (s45). Return.
[0045]
When the audio signal of the third sound is input (s39), the volume level of the audio signal is determined (s41). When the volume determination data of the third sound is input from the audio signal processing unit 50 to the CPU 30, a command whose third volume matches the volume determination data is extracted from the command pattern extracted in s37 (s42). If there is no command pattern in which the third volume matches the volume determination data in the command pattern, the process proceeds to s45 by the determination of s43, the extraction of s37 is canceled, and the process returns to s31. When a command pattern whose third volume matches the volume determination data is extracted, a command (processing content) corresponding to the command pattern is executed (s44). After executing the process, the process returns to s31.
[0046]
FIG. 5 shows a flowchart of a tempo monitoring operation for processing a voice command by tempo and a tempo command pattern table. In the command pattern table of FIG. 5B, a plurality of command patterns each consisting of three consecutive sound generation intervals of four sounds are registered corresponding to the commands. That is, this command pattern includes a first interval that is a time interval between the input timing of the first sound and the input timing of the second sound, and a second interval that is a time interval between the input timing of the second sound and the input timing of the third sound. The third interval is the time interval between the input timing of the third sound and the input timing of the fourth sound. In this embodiment, the time interval is ms, but other than this, a predetermined tempo clock count or the like can be employed. In the figure, for example, command pattern “400, 400, 200” corresponds to command 1, command pattern “400, 800, 200” corresponds to command 2, and command pattern “600, 400, 200” corresponds to command 3. It corresponds to.
[0047]
In the flowchart of FIG. 5A, this operation is performed on the input from the microphone 47 while the karaoke performance is not being performed. It waits in s51 until an audio signal is input first. When the first (first sound) audio signal is input, the time interval until the next second sound is input is counted (s52, s54). If the next second sound is not input for a certain time (for example, about 1 second) after the first sound, the command is not input (s53), and the count is stopped and the process returns to s51. The break between the sound signals of the first sound and the second sound is when the sound volume falls below a predetermined value. This counting operation is performed by the audio signal processing unit 50, and the count value of the time interval is input to the CPU 30.
[0048]
When the count value is input to the CPU 30, the command pattern table of FIG. 5B is searched to extract a command pattern whose first interval value matches the count value (s55). If there is no command in which the first interval matches the count value, the process returns to the standby operation in s51 based on the determination in s56. When a command whose first interval matches the count value is extracted, it waits until the third sound is input while counting the time from the input timing of the second sound (s57) (s58, s59). If the third sound is not input for a certain time after the second sound is input, it is determined that the command is not input (s59), the extraction of s55 is canceled (s68), and the process returns to s51.
[0049]
When the third sound signal is input (s58), the count value from the input timing of the second sound is read, and the command whose second interval value matches the count value in the command pattern extracted in s55. A pattern is extracted (s60). If there is no command pattern in which the second interval coincides with the count value in the command pattern, the process proceeds to s68 in the determination of s61, the extraction of s55 is canceled, and the process returns to s51. When a command whose second interval matches the count value is extracted, it waits until the fourth sound is input while counting the time from the input timing of the third sound (s62) (s63, s64). If the fourth sound is not input for a predetermined time after the third sound is input, it is determined that the command is not input (s64), the extraction of s60 is canceled (s68), and the process returns to s51.
[0050]
When a sound value of the fourth sound is input and a count value from the input timing of the third sound to the input timing of the fourth sound is input from the sound signal processing unit 50 (s63), among the command patterns extracted in s60 A command pattern whose third interval matches this count value is extracted (s66). If there is no command whose third interval matches the count value in the command pattern, the process proceeds to s68 in the determination of s66, cancels the extraction of s60, and returns to s51. If a command pattern whose third sound matches the count value is extracted, a command (processing content) corresponding to the command pattern is executed (s67). After execution, return to s51.
[0051]
In this example, all commands are determined at three time intervals of four consecutive sounds, but the commands may be other than four sounds, or four sounds and other sounds may be mixed. In this case, a short command that matches the first half of the long command is not set.
[0052]
In the karaoke apparatus, as for the voice command function based on the pitch, volume and tempo of the voice signal, only one of them may alternatively function, or three functions may function in parallel. . Further, the user may arbitrarily select one of the function modes.
[0053]
Further, in the above embodiment, the pitch command function uses absolute pitches and commands are composed of three absolute pitches. However, as in the tempo command function, the pitch interval between two pitches (relative pitch) is used. ) May constitute a command. For example, when four sound signals are input, the first pitch that is the relative pitch of the first and second sounds, the second pitch that is the relative pitch of the second and third sounds, the third and fourth sounds. The command is constituted by the third pitch which is the relative pitch of
[0054]
Furthermore, a plurality of music elements such as pitch, volume, and tempo may be extracted from the input audio signal and combined to form a command pattern. In this case, a large number of command patterns can be configured with a small number of sounds.
[0055]
In the above embodiment, the voice command function for pitch, volume, and tempo is a content selection function. However, the voice command function may be applied to a game operation function executed on the karaoke apparatus. Good. For example, in the case of an answer to a game “Sing the first melody of the XX song”, it can be used for a function of determining whether the melody input from the microphone 47 is actually the melody of the XX song.
[0056]
In addition, in the case of a game in which a character or car on the screen is moved up and down or left and right, the up and down and left and right of the moving direction may be controlled by the pitch or the volume. Moreover, you may enable it to control the moving speed of a character or a vehicle by input tempo. For example, the faster the input voice tempo, the faster the character moves.
[0057]
Further, in a game in which a character or a car is moved on the screen, two characters or a car may be moved using two microphones to make a battle.
[0058]
Further, this voice command function may be used to control a karaoke song performance function that is an original function of the karaoke apparatus. For example, if a voice signal (for example, “One, Two, One, Two, Three”, etc.) is input at a certain tempo when the performance of a karaoke song is in a standby state, the voice signal processing unit 50 determines the tempo. However, the performance may start at that tempo. Also, when the performance of a karaoke song is on standby, when the singing of the karaoke song is sung with a key of his choice, the audio signal processing unit 50 determines the key and transposes the karaoke song to that key. You can also play.
[0059]
This flowchart is shown in FIG. FIG. 6A is a flowchart showing the tempo setting operation. When a continuous voice such as “One, Two, One, Two, Three” is input while a karaoke song is selected and the performance is on standby (s71), the tempo is detected based on the interval of the voice (S71). s72). Then, this tempo is set as a clock for reading music data (s73). That is, the tempo set by default in the music data is rewritten to this tempo. Then, karaoke performance is started (s74). Subsequent tempo switching is performed based on this tempo. Note that the input audio signal is not like “One, Two, One, Two, Three” but may be a karaoke song.
[0060]
FIG. 5B is a flowchart showing the key setting operation. When a karaoke song is selected and the melody of the song is input while the performance is on standby (s81), the key (tonality) is detected from the frequency of this melody (s82). Based on the key and the original tone of the song data, a pitch shift amount for transposing the song to this key is set (s83). That is, if the key sung in C major is in D major, the shift is performed so as to raise all the note data of the whole tone (two semitones). This shift may be performed in real time when the note data is read, or all data may be rewritten in advance. After this, karaoke performance is started (s84). The melody to be input first may be a part other than the singing start. For example, a rust portion may be used.
[0061]
In this example, the singer sings a part of the song and transposes the key of the performance so that it matches the key of the singing. You may make it transpose, and you may make it transpose to the key that the sound which the singer input becomes the highest sound or the lowest sound of the music. These processes can also be performed in s82 and s83 of the flowchart.
[0062]
In the tempo command function of the above-described embodiment, the command is determined only by the combination of the audio signal start timing intervals. However, the duration of the audio signal may also be an element of the command. As a result, even if the first interval, the second interval, and the third interval, which are the start timing intervals, are the same pattern, another command can be used depending on the length of the voice. Further, the command may be configured only by the lengths of a plurality of audio signals without considering the start timing.
[0063]
【The invention's effect】
As described above, according to the present invention, since the apparatus can be controlled by the audio signal, it is not necessary to increase the number of buttons for operation or complicate the key sequence even if the apparatus is multifunctional. The device can be easily controlled from the microphone.
[Brief description of the drawings]
FIG. 1 is a block diagram of a karaoke apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram showing the configuration of RAM, hard disk, and music data of the karaoke apparatus
FIG. 3 is a flowchart for processing a pitch command function of the karaoke apparatus.
FIG. 4 is a flowchart for processing a volume command function of the karaoke apparatus.
FIG. 5 is a flowchart for processing a rhythm command function of the karaoke apparatus.
FIG. 6 is a flowchart showing a tempo setting operation and a key setting operation of the karaoke apparatus.
[Explanation of symbols]
30 ... CPU, 32 ... RAM, 37 ... hard disk,
47 ... Microphone, 50 ... Audio signal processor

Claims (3)

A command pattern table that stores a command pattern that is a combination of music elements of a plurality of continuous audio signals and processing contents corresponding to the command pattern;
A control unit that searches the command pattern table with a plurality of music elements detected from an audio signal input from a microphone and executes a process corresponding to the command pattern when a matching command pattern is extracted;
A voice instruction device comprising:   The voice instruction device according to claim 1, wherein the music element is a pitch, a volume, or a tempo of a voice signal.   A karaoke apparatus comprising the voice instruction apparatus according to claim 1.

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