JP2017173640A - Musical performance analyzer and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To determine a special rendition such as a flageolet rendition, and evaluate a musical performance according to the rendition, with a simple method.MEANS FOR SOLVING THE PROBLEM: A musical performance analyzer 100 comprises: a setting part 10 for setting information of a normal pitch extent which is normally used in a musical instrument; an acquisition part 11 for acquiring an acoustic signal; a detection part 12 for detecting a sound element containing a pitch based on the acquired acoustic signal; a determination part 13 for determining whether the detected pitch belongs to the normal pitch extent, or to a special pitch extent; a determination part 14 for, when the detected pitch belongs to the special pitch extent, determining that a rendition is a special rendition; an evaluation part 15 for evaluating a musical performance; and a change control part 16 for changing an evaluation criterion between the normal rendition and special rendition.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a performance analysis apparatus suitable for electronically (automatically) determining or evaluating a performance method of a musical instrument such as a woodwind instrument such as a saxophone.

  It is known that woodwind instruments such as saxophones produce sounds in a range that exceeds the normal range of the instrument by playing the fradiret. In this specification, the normal sound range is the range of the pitch (pitch) that can be produced by a certain instrument when the instrument is played in a normal manner, and is determined according to the type of instrument. Yes. The fraudlet playing method is a playing method of playing a sound higher than the normal sound range by using a finger and playing different from a normal playing method. In this specification, a performance method that plays a sound in a range outside the normal range by a performance method different from a normal performance method, such as a fraudlet performance method, is called a “special performance method”. In addition, a range outside the normal range played by a special playing technique is called a “special range”. The special performance technique may be difficult for a beginner of a musical instrument, for example, compared with a normal performance technique. For example, a beginner or the like may find it difficult to obtain a special performance method in obtaining a stable pitch, volume, tone color, etc., or shifting from a normal performance method to a special performance method, or from a special performance method to a normal performance method.

  Conventionally, as practice of so-called karaoke (singing in accordance with automatic accompaniment), it is known that a voice corresponding to a user's singing is electronically processed by a computer or the like to evaluate the singing. Even when performing musical instrument performance in conjunction with automatic accompaniment, it is conceivable to perform electronic processing on the sound generated by the musical instrument performance and evaluate the performance. In that case, it is desirable to evaluate the performance in consideration of the special performance method.

  For example, Patent Document 1 describes that in a technique for electronically generating a musical tone, a musical tone generated by a fraudlet playing method is generated by simulating musical tone pronunciation by a fraudlet playing method.

  Japanese Patent Application Laid-Open No. 2004-228561 describes that in a technique for displaying a score suitable for a stringed instrument on a display or the like, a portion to be played by the fraudlet playing method is expressed on the score based on the score display data.

  Further, Patent Document 3 describes that a back voice is detected by analyzing a harmonic component included in a voice generated by singing.

  However, in any of the above-described conventional techniques, it is not possible to determine or evaluate a special performance method such as a fraudlet performance method according to the sound generated by the performance of a musical instrument such as a saxophone. It wasn't.

JP 2000-276176 A JP 2004-117486 A JP 2012-194389 A

  The present invention has been made in view of the above points, and provides a performance analysis apparatus that can determine a special performance method such as a fraudlet performance method or perform performance evaluation according to the performance method by a simple method. The purpose is to do.

  The present invention relates to a setting unit that sets information on a normal sound range that is normally used by a musical instrument, an acquisition unit that acquires an acoustic signal generated by the performance of the instrument, and a detection unit that detects a pitch based on the acquired acoustic signal. And a determination unit that determines whether the detected pitch belongs to the normal sound range or a special sound range that is out of the normal sound range, based on the set normal sound range information, and the pitch is the And a determination unit that determines that the performance is a special performance method for performing the performance in the special range when it is determined to belong to the special range.

  According to the performance analysis apparatus having the above-described configuration, depending on whether the pitch of the sound generated by the performance of the musical instrument belongs to the normal sound range normally used by the musical instrument or the special sound range outside the normal sound range, It is possible to determine whether or not is a special performance technique for performing in a special range. Therefore, the special performance method can be determined by a simple process that only determines the sound range to which the pitch belongs.

  The performance analysis apparatus according to the present invention includes a setting unit that sets information of a normal sound range that is normally used by a musical instrument, an acquisition unit that acquires an acoustic signal generated by the performance of the musical instrument, and the acquired acoustic signal. A detection unit for detecting a sound element including a pitch based on the evaluation unit, an evaluation unit for evaluating the performance based on the detected sound element, and the detected pitch based on the information on the set normal range. A determination unit that determines whether the normal sound range or a special sound range that is out of the normal sound range belongs, and when the pitch is determined to belong to the special sound range, the evaluation criteria by the evaluation unit, A change control unit for changing to a standard for a special performance method for performing the special sound range is provided.

  According to the performance analysis apparatus having the above configuration, it is determined whether the pitch of the sound generated by the performance of the musical instrument belongs to a normal sound range that is normally used by the musical instrument or a special sound range that is out of the normal sound range, In the case of belonging to a special sound range, the evaluation standard by the evaluation unit can be changed to a special performance standard for performing the special sound range. Therefore, the evaluation criteria can be switched between the case of the normal performance method and the case of the special performance method by a simple process that only determines the sound range to which the pitch belongs.

  In addition, the present invention may be implemented and configured not only as an apparatus invention but also as a program invention that causes a computer to execute the steps of realizing the functions of the performance analysis apparatus.

  According to the present invention, it is possible to determine a special performance method such as a fraudlet performance method or perform a performance according to the performance method by simply determining whether the detected pitch belongs to the normal sound range or the special sound range. It has an excellent effect that can be evaluated.

The conceptual block diagram explaining the structural example of the performance analyzer which concerns on one Embodiment of this invention. The block diagram which shows the electric hardware constitutions of a performance analyzer. Display example of musical score and performance analysis result as examples of performance. The flowchart which shows the example of a performance determination process. The flowchart which shows the example of performance evaluation processing. FIG. 5 is a block diagram for explaining a conceptual configuration example of a performance analysis apparatus according to another embodiment. FIG. 5 is a block diagram for explaining a conceptual configuration example of a performance analysis apparatus according to another embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a conceptual block diagram illustrating a configuration example of a performance analysis apparatus according to an embodiment. The performance analysis apparatus 100 includes a setting unit 10, an acquisition unit 11, a detection unit 12, a determination unit 13, a determination unit 14, an evaluation unit 15, and a change control unit 16. The performance analysis apparatus 100 may be configured by a computer device capable of executing a program for performing the operations of the units 10 to 16 (various processes for analyzing audio signals described later), such as a general-purpose personal computer. It may be composed of a dedicated hardware device (an integrated circuit or the like) configured to be able to execute the above operations.

  The setting unit 10 sets information on a normal sound range that is normally used by a musical instrument. The setting unit 10 is configured to set a normal sound range corresponding to the input instrument type when the user inputs an instrument name such as “Alto Saxophone”, for example. The normal sound range is a range of pitches (ie, pitches) that can be produced by a musical instrument when the musical instrument is played in a normal manner, and is determined according to the type of musical instrument. As another example, the setting unit 10 may be configured such that the user manually inputs a numerical range that is a normal sound range.

  The acquisition unit 11 acquires an acoustic signal generated according to the performance of the musical instrument by the user. The acquisition unit 11 may be configured to acquire a user's musical instrument performance sound in real time via a sound collection unit such as a microphone, or from a recording medium that records data of the user's musical instrument performance sound. , And may be configured to obtain the recorded data.

  The detection unit 12 detects a plurality of types of sound elements including at least a pitch based on the acquired acoustic signal. The determination unit 13 determines whether the detected pitch belongs to the normal sound range or the special sound range outside the normal sound range based on the information of the normal sound range set in the setting unit 10. The special sound range is a sound range that is played by a special performance method such as, for example, a fraretlet performance method. The special performance method is a performance method of playing a sound in a special range with a performance method different from a normal performance method (normal performance method). For example, the Fradiret playing method, which is an example of a special playing method in a woodwind instrument such as a saxophone, can play a sound in a higher range than the normal range by using fingers and playing different from the normal playing method.

  When the pitch range of the detected pitch is determined to be the normal range, the determination unit 14 determines that one note corresponding to the pitch has been played by the normal performance method, and the detected pitch is determined to be the special range. If it is, it is determined that one note corresponding to the pitch has been played by a special performance technique.

  The evaluation unit 15 evaluates the performance based on the multiple sound elements detected by the detection unit 12. Performance evaluation includes, for example, evaluation of the stability of volume, pitch, tone color, etc. for each sound, variation of each element in performance over multiple sounds, and the like. Performance evaluation includes scoring the performance and presenting it to the user. When the performance is determined to be a special performance method, the change control unit 16 changes the standard for evaluation by the evaluation unit 15 to the standard for the special performance method. In the case of the special performance method, the evaluation in consideration of the special performance method can be performed by changing the standard performance method and the evaluation standard.

  FIG. 2 is a block diagram illustrating an example of an electrical hardware configuration of the performance analysis apparatus 100 of FIG. The performance analysis apparatus 100 includes a microprocessor unit (CPU) 101, a memory 102, an operation device 103, a display device 104, an audio interface (“audio I / F”) 105, and a communication interface (“communication I / F”). ) 106. The CPU 101 executes various programs stored in the memory 102 and controls the overall operation of the performance analysis apparatus 100. The memory 102 includes a ROM, a RAM, and an external storage device. The external storage device includes an appropriate recording medium such as a magnetic disk, an optical disk, or a flash memory.

  The operation device 103 includes an input device such as a mouse and a keyboard, and a mechanism for detecting an input from the input device. The display device 104 includes a display capable of displaying various screens including a score screen described later, and a mechanism for controlling the display of the display.

  The audio I / F 105 includes an input terminal for an acoustic signal (audio signal), an output terminal for the acoustic signal, an analog-digital converter, and a digital-analog converter. The performance analysis apparatus 100 can acquire an acoustic signal (audio signal) generated by the performance of the user's musical instrument via the audio I / F 105. The audio I / F 105 constitutes the acquisition unit 11.

  The communication I / F 106 includes an Ethernet (registered trademark) interface, a USB interface, and the like. The performance analysis apparatus 100 can be connected to a communication network such as the Internet via the communication I / F 106.

  The user can practice playing a musical instrument using, for example, a score displayed on the display device 104 as a model. The performance analysis apparatus 100 can perform performance analysis including performance method determination based on an acoustic signal generated by performance of a musical instrument, display the analysis result, evaluate performance, and the like by the processing described below. The following describes an example in which performance analysis is performed on an acoustic signal generated by practicing alto saxophone (hereinafter also referred to simply as saxophone), and the analysis result is displayed and performance is evaluated. .

  FIG. 3 is an example of a score screen that displays on the display device 104 the score (example) of a practice song used for saxophone practice. Data for displaying a score may be stored in the memory 102, for example, or supplied from an external device (for example, a USB memory or a computer device on a communication network) connected via the communication I / F 106. May be. The score data includes note information corresponding to each sound constituting the practice music. In the score display section 30, the vertical axis indicates the pitch (pitch), the horizontal axis indicates the passage of time, and the note symbols 31 corresponding to the sounds constituting the practice music are arranged. Each scale line on the vertical axis indicates the pitch at intervals of 100 cents (a semitone of 12-tone average temperament). Each note symbol 31 represents a pitch by a position in the vertical axis direction, and represents a performance timing (time position) pitch by a position in the horizontal axis direction. The practice song information display unit 32 at the upper left of the screen displays the instrument type, scale (scale), practice song name, and the like. The user can variably set the playback tempo (that is, the screen scrolling speed) from the tempo setting unit 33, and can variably set the key (key) of the practice song from the key setting unit 34.

  The user can instruct the start of practice with the start instruction button 35. As the practice starts, the score display unit 30 scrolls relative to the current position cursor 36 along the time axis (horizontal axis) at a speed corresponding to the current tempo setting. As the score display section 30 scrolls, the current position cursor 36 sequentially indicates the note symbols 31 to be played as time elapses. The user plays the musical note symbol 31 indicated by the cursor 36 while looking at the score display section 30 of the display device 104, thereby practicing playing the musical instrument in accordance with the model. With the fast forward button 37 and the rewind button 38, the time position on the score can be quickly moved.

  The performance analysis apparatus 100 performs a process of determining a performance method based on an acoustic signal generated by playing a musical instrument. FIG. 4 is a flowchart illustrating an example of a performance style determination process executed by the CPU 101 of the performance analysis apparatus 100. In one embodiment, the performance analysis apparatus 100 performs the process of FIG. 4 in accordance with the operation of the start instruction button 35, that is, in substantially real time according to the performance practice of the musical instrument.

  Prior to the processing of FIG. 4, the CPU 101 of the performance analysis apparatus 100 sets the normal range information of the musical instrument used for practice (operation of the setting unit 10 of FIG. 1). The timing for setting may be any time before the start of the process of FIG. 4, for example, before starting the practice. The normal sound range may be set by manual input from the operation device 103 by the user as described above, for example. For example, the memory 102 stores information on the normal sound range of the musical instrument for each type of musical instrument. The user uses the operation device 103 to input an instrument name such as “Alto Saxophone” from the practice song information display section 32 (FIG. 3) on the score screen, for example. The CPU 101 sets a normal sound range corresponding to the instrument name designated by the user based on the stored normal sound range information. For example, in the case of an alto saxophone, the normal sound range is from the level of the clef symbol to the level that is approximately two octaves higher and lower (or higher).

  In step S1, the CPU 101 acquires an acoustic signal generated by playing a musical instrument (practice) (operation of the acquiring unit 11 in FIG. 1). As an example, the CPU 101 acquires the generated acoustic signal in approximately real time via the audio I / F 104. For example, the CPU 101 acquires an acoustic signal for each time interval of one sound (note) corresponding to at least one note. One note (note) is a performance sound corresponding to one note. The acquired acoustic signal is associated with time information. Thereby, the CPU 101 can associate each sound based on the acoustic signal with each note (time position on the score) on the score of the practice music.

  In step S2, the CPU 101 analyzes the acquired acoustic signal and detects a plurality of types of sound elements including a pitch for each sound (note) (operation of the detection unit 12 in FIG. 1). The detected sound element includes, for example, a volume, a pitch, a timbre, etc. in addition to the pitch. As a result, a plurality of types of sound elements such as pitch, volume and tone color for each sound corresponding to one note are obtained. In addition, the process which detects sound elements, such as a pitch for every sound based on an acoustic signal, can be performed by a well-known technique.

  In step S3, the CPU 101 refers to the information of the set normal sound range and determines whether the detected pitch belongs to the normal sound range or the special sound range (operation of the determination unit 13 in FIG. 1). ). When it is determined that the detected pitch belongs to the normal sound range (Yes in step S3), the CPU 101 determines in step S4 that the performance of the sound corresponding to the detected pitch has been performed by the normal performance method. .

  For example, when a user plays an alto saxophone with a fraretlet performance, the sound generated by the performance belongs to a special sound range higher than the normal sound range. In this case, the CPU 101 determines that the pitch of the sound generated by the performance belongs to the special range (No in step S3), and determines that the performance is a special performance method (step S5). Steps S4 and S5 correspond to the operation of the determination unit 14 in FIG.

  CPU101 performs the pitch detection of said step S2, and the performance method determination of said step S3-S5 about each sound contained in the acquired acoustic signal. This rendition style determination process can be performed by a simple process of sound range determination based on the pitch detection result. This simple performance method determination process is particularly effective for instruments that are limited to a relatively narrow range, such as a saxophone, and whose range is higher than the normal range by using a special performance method. .

  In step S6, the CPU 101 updates the display of the score screen (FIG. 3) of the display device 104 so as to display the portion corresponding to the performance determined to be the special performance method in step S5 in a manner different from the other portions. To do. As an example, the CPU 101 displays a mark 40 indicating the special performance technique in association with the musical note symbol 31a corresponding to the performance determined as the special performance technique on the score screen of FIG. Further, as an example, the CPU 101 displays a graph such as a radar chart indicating a plurality of feature values related to the corresponding performance sound according to the designation of the special performance method mark 40, as a display frame (pop-up or the like) different from the score display unit 30. May be displayed. A graph such as a radar chart displays a plurality of types of sound elements (features) such as detected pitch, volume, sound length, overtone structure, and the like. As a modification, the CPU 101 may display a graph such as a radar chart indicating the plurality of types of sound elements (features) instead of the special performance method mark 40. As an example of the display control associated with the pitch detection in step S2, the CPU 101 may display a volume track 41 of each sound whose pitch is detected in step S2 on the score screen of FIG. Regarding the volume trajectory 41, the vertical axis of the score display unit 30 indicates the volume level. Further, as an example of the display control accompanying the pitch detection in step S2, the CPU 101 may display a performance sound mark 42 (represented by a circle in FIG. 3) indicating each sound whose pitch is detected in step S2. Good. As a modification, the display of the special performance method in step S6 may be performed in association with the performance sound mark 42, for example, by changing the display color or size of the performance sound mark 42.

  In step S7, the CPU 101 performs performance evaluation processing based on the various sound elements detected in step S2. FIG. 5 is a flowchart showing an example of performance evaluation processing executed by the CPU 101 of the performance analysis apparatus 100 in step S7. As an example, the performance evaluation process is performed for each sound for which a sound element has been detected in step S2. In step S8, the CPU 101 refers to the performance method determination results in steps S3 to S5 to determine whether the performance method corresponding to the evaluation target sound is the normal performance method or the special performance method.

  In the case of the normal performance method (Yes in step S8), the CPU 101 applies the standard for the normal performance method as the performance evaluation standard (step S9), and evaluates the performance corresponding to the sound to be evaluated based on the standard for the normal performance method. Is performed (step S11). On the other hand, in the case of the special performance method (No in step S8), the CPU 101 applies the standard for the special performance method as the performance evaluation standard (step S10), and corresponds to the sound to be evaluated based on the standard for the special performance method. Performance evaluation is performed (step S11). In other words, the performance is evaluated by changing the evaluation criteria according to whether the pitch of the sound to be evaluated belongs to the normal sound range or the special sound range. Steps S8 to S10 are operations of the change control unit 16 in FIG. 1, and step S11 is an operation of the evaluation unit 15 in FIG.

  The performance evaluation in step S11 is performed by, for example, scoring the performance with respect to various evaluation items. The evaluation items are, for example, pitch stability, volume stability, timbre stability, how the sound rises (eg, stability at the rising portion), how the sound disappears (eg, stability at the release portion), overtones, etc. Includes evaluations for each sound element, such as composition and volume of harmonics. The stability is evaluated by, for example, the size of a deviation width from a reference value of a sound element such as a pitch or the presence or absence of unnecessary fluctuation of a sound element such as a pitch in one sound. The evaluation item may include evaluating the “goodness” of the performance based on the total value of the evaluation items for each sound element. The total value may be a total value of values weighted for each sound element item. Further, the evaluation item may include evaluating whether or not the performance has been performed as specified by comparison with a note as a model (for example, accuracy of pitch, how to apply sound intensity, etc.).

  As an example, the standard for the special performance technique is to change the standard in the direction of the added points, that is, to make the evaluation standard low (relaxed) compared to the case of the normal performance technique. For example, the pitch is difficult to play with saxophone fraudlet. For beginners, the pitch tends to be difficult. Therefore, by lowering the evaluation standard, even if the pitch of the performance sound by the Fradiret performance method deviates somewhat from the specified pitch reference value or slightly deviates from the note, for example, there was an equivalent deviation in the normal performance method. Try to be highly appreciated compared to the case. Thereby, for example, for beginners and the like, it is possible to perform an evaluation taking into account the difficulty of the fraudlet playing method. On the other hand, the standard for the special performance method may be one that changes the standard in the direction of deduction, that is, a higher (stricter) evaluation standard than in the case of the normal performance method. For example, it becomes possible to provide an effective practice for more advanced players to learn more accurate method of playing the fradiolette by making the pitch determination of the performance sound by the fradiolette performance stricter.

  Moreover, you may vary the grade which changes the reference | standard for special performance methods for every evaluation item as an example. Moreover, the reference | standard for special performances may be set in steps according to a user's performance level as an example. Moreover, as an example, different types of evaluation items may be included in the standard for special performance and the standard for normal performance. For example, the standard for special performance includes an overtone structure and overtone volume as evaluation items, but the standard for normal performance may be an embodiment in which the overtone structure and overtone volume are not included as evaluation items. In addition, as an example of a standard for special performance techniques, when an instruction to perform a special performance technique is given to a score (example), it is included in the scoring whether or not the special performance technique has been performed as instructed.

  In step S12, the CPU 101 displays the evaluation result in step S11 on the score screen (FIG. 3) of the display device 104. The display result of the evaluation result is, for example, changing the color or size of the corresponding musical note 42 according to the evaluation, changing the color or thickness of the pitch locus 41 according to the evaluation, or the corresponding special performance method. This includes changing the display of performance results, such as changing the color and size of the mark 40 according to the evaluation. Another example of the display form of the evaluation result is to change the color or size of the corresponding musical note symbol 31 according to the evaluation, or to evaluate the color or thickness of the corresponding pitch line (vertical scale line). Changing the display on the musical score (example) side, such as changing according to. Another example of the display mode of the evaluation result includes displaying the scoring result of each sound. The display of the scoring result includes displaying a numerical value indicating the score, for example.

  Another example of the display form of the evaluation result is to display it by a graph such as a radar chart indicating the evaluation result regarding a plurality of types of evaluation elements including the detection value of the plurality of sound elements and the evaluation result for each of the plurality of evaluation items. Including. The CPU 101 displays a graph such as a radar chart in a display frame (for example, a pop-up) different from the score display unit 30. A graph such as a radar chart may be displayed, for example, in accordance with the designation of the performance note 42 or the note symbol 31. A graph such as a radar chart may be displayed only in a special performance section. Alternatively, instead of the special performance method mark 40, a graph such as a radar chart indicating the evaluation results regarding a plurality of types of evaluation elements may be displayed.

  Further, the CPU 101 may perform performance evaluation over a plurality of sounds (step S11) and display the evaluation result (step S12). The performance evaluation over a plurality of sounds is, for example, performance evaluation in the case of shifting from the normal performance method to the special performance method or from the special performance method to the normal performance method. By evaluating the transition of such renditions based on the criteria for special renditions, it is possible to perform an evaluation in consideration of the transition of renditions. Performance evaluation over multiple sounds is to evaluate multiple performance sounds with the same pitch (for example, pitch stability), or to evaluate multiple performance sounds with various pitches (for example, good at each pitch) Etc.), phrase evaluation (fingering, etc.), etc.

  The performance evaluation process in FIG. 5 can perform performance evaluation in consideration of performance performed by a special performance method such as a fraudlet performance method, and provide the evaluation result to the user. The user can efficiently and effectively practice playing a musical instrument by performing performance evaluation in consideration of special performance methods.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the technical idea described in the claims and the specification and drawings. Deformation is possible. For example, FIG. 6 shows, as another configuration example of the performance analysis apparatus 100, a performance that includes only the setting unit 10, the acquisition unit 11, the detection unit 12, the determination unit 13, and the determination unit 14 among the components shown in FIG. The analyzer 100 is shown. With this configuration, the performance analysis apparatus 100 can determine whether the performance has been performed by the normal performance method or the special performance method, depending on whether the pitch of the acoustic signal is the normal sound range or the special sound range. Therefore, the rendition style can be determined by a simple process for determining the sound range. 7 shows another configuration example of the performance analysis apparatus 100. Among the components shown in FIG. 1, the setting unit 10, the acquisition unit 11, the detection unit 12, the determination unit 13, the evaluation unit 15, and the change control unit. The performance analysis apparatus 100 provided only with 16 is shown. With this configuration, the performance analysis apparatus 100 can change the performance evaluation criteria depending on whether the pitch of the acoustic signal is a normal sound range or a special sound range. Therefore, it is possible to evaluate in consideration of the playing style.

  In another embodiment, the setting unit 10 acquires an acoustic signal generated in accordance with the performance of the instrument, automatically recognizes an instrument name (instrument type) based on the acquired acoustic signal, and is automatically recognized. The normal sound range corresponding to the instrument name may be set. A well-known technique may be applied to the method of automatically recognizing the instrument name based on the acoustic signal.

  Further, in another embodiment, the setting unit 10 is not limited to setting the information of the normal range, but may be configured to set the information of the special range, or the information of the normal range and the special range It may be configured to set both of the information. This is because the determination unit 13 can determine whether the detected pitch belongs to the normal sound range or the special sound range regardless of which of the normal sound range information and / or the special sound range information is set.

  The setting unit 10 is not limited to setting the normal sound range defined by the instrument type as the normal sound range information as it is, and a part of the normal sound range specified by the instrument type is determined from the set normal sound range information. You may make it exclude. In this case, the special sound range includes a part of the normal sound range corresponding to the musical instrument type (that is, a pitch that can be played by the normal playing method). Thereby, for example, even when playing the pitch of the normal sound range by a special performance method, it is possible to perform performance analysis (performance determination, performance evaluation) in consideration of the special performance method.

  In another embodiment, step S1 in FIG. 4 captures a recording (waveform data) of an acoustic signal generated by playing a musical instrument from a storage medium. In this case, the CPU 101 of the performance analysis apparatus 100 performs the process shown in FIG. 4 at an arbitrary timing, not only when the musical instrument is played. For example, the process shown in FIG. 4 may be automatically started at the end of practice, or the process shown in FIG. 4 may be started when a performance analysis start instruction is received from the user. In this case, the CPU 101 may acquire the waveform data of the entire practice (that is, one song) collectively based on the sound recording (waveform data), or at least one sound ( Note) Waveform data for each time interval may be divided and acquired. The storage medium may be, for example, the memory 102 or an external device connected via the communication I / F 106.

  In another embodiment, acquisition part 11 may be constituted so that an acoustic signal may be acquired via a communication network from other computers connected via communication I / F106. For example, the performance analysis apparatus 100 according to the present invention can be applied to a learning system in which a student terminal and a teacher terminal are connected via the Internet. For example, the teacher's terminal acquires musical instrument practice sounds from the student's terminal via the Internet, and displays performance analysis (performance method determination and / or evaluation) based on the acquired practice sounds. Teachers can give guidance to students, such as commenting on them. Alternatively, the student terminal acquires a musical instrument performance sound (example) from the teacher terminal via the Internet, and displays a performance analysis (performance method determination and / or evaluation) based on the acquired performance sound (example). . The student can perform effective practice by learning the characteristics of the performance based on the display or comparing with the performance analysis result of the student.

  The musical instrument for which the performance analysis apparatus 100 performs performance analysis (performance determination and / or evaluation) is not limited to a saxophone, and any instrument that can determine the special performance depending on whether the pitch of the performance sound is in the normal range or not. Such an instrument may be used. An example of a musical instrument that can discriminate a special performance method depending on whether the pitch is in the normal sound range is various woodwind instruments. Further, in the clarinet, the normal sound range can be classified into four types, that is, a Sharmoy range, a bridge range, a Clarion range, and an Artissimo range. Among them, playing the bridge range is difficult to finger and blow compared to other ranges. Therefore, when performing a clarinet performance analysis, the setting unit 10 may set the Charliemo range, the Clarion range, and the Artissimo range excluding the bridge range as normal ranges so that the bridge range becomes a special range.

  Moreover, the performance analysis apparatus 100 of this invention may be comprised so that at least one part of each part 10-16 may be distributed and performed by one or more computer apparatuses on a network. According to another aspect of the present invention, a step of setting information on a normal sound range normally used by a musical instrument to a computer, a step of acquiring an acoustic signal generated by the performance of the instrument, and a pitch based on the acquired acoustic signal are detected. Determining whether the detected pitch belongs to the normal sound range or a special sound range deviating from the normal sound range based on the set normal sound range information; and If it is determined to belong to the special sound range, it may be configured and implemented as a program invention for executing the step of determining the performance as a special performance method for performing the special sound range. Moreover, this invention may be comprised and implemented as invention of the method provided with each step of the said program.

  The present invention also includes a step of setting information on a normal sound range normally used by a musical instrument in a computer, a step of acquiring an acoustic signal generated by the performance of the instrument, and a pitch based on the acquired acoustic signal. Detecting a sound element; evaluating the performance based on the detected sound element; and based on the set normal sound range information, the detected pitch is the normal sound range, or The step of determining which of the special ranges outside the normal range belongs, and when the pitch is determined to belong to the special range, the performance of the special range is performed based on the evaluation criteria by the evaluation unit Therefore, it may be configured and implemented as an invention of a program for executing a step of changing to a standard for special performance techniques. Moreover, this invention may be comprised and implemented as invention of the method provided with each step of the said program.

DESCRIPTION OF SYMBOLS 100 Performance analyzer, 10 Setting part, 11 Acquisition part, 12 Detection part, 13 Determination part, 14 Determination part, 15 Evaluation part, 16 Change control part

Claims (8)

A setting section for setting information on the normal range normally used by the instrument;
An acquisition unit for acquiring an acoustic signal generated by the performance of the instrument;
A detector for detecting a pitch based on the acquired acoustic signal;
A determination unit that determines whether the detected pitch belongs to the normal sound range or a special sound range that is out of the normal sound range, based on the information of the set normal sound range;
When the pitch is determined to belong to the special range, the determination unit that determines the performance as a special performance method for performing the special range,
A performance analysis apparatus comprising: A display unit for representing the performance of the musical instrument;
The performance analysis apparatus according to claim 1, wherein the display unit is configured to display a performance determined to be a special performance method by the determination unit in a manner different from other performances.   The display unit is configured to display a score as a model for playing the musical instrument, and to display a portion corresponding to the performance determined to be the special performance method on the score in a manner different from other portions. The performance analysis apparatus according to claim 2, wherein: The detection unit is configured to detect a plurality of sound elements including the pitch,
An evaluation unit that evaluates the performance based on the detected sound element;
4. The apparatus according to claim 1, further comprising a change control unit configured to change a reference for the evaluation by the evaluation unit to a reference for the special performance when the performance is determined to be the special performance by the determination unit. The performance analysis apparatus according to any one of the above.   The performance analysis apparatus according to claim 4, wherein the change control unit is configured to change the evaluation criteria so that performance is highly evaluated in the case of the special performance method compared to other cases. A setting section for setting information on the normal range normally used by the instrument;
An acquisition unit for acquiring an acoustic signal generated by the performance of the instrument;
A detection unit for detecting a sound element including a pitch based on the acquired acoustic signal;
An evaluation unit that evaluates the performance based on the detected sound element;
Based on the information on the set normal range, whether the detected pitch belongs to the normal range or a special range outside the normal range based on the set normal range information. A decision part to decide;
When it is determined that the pitch belongs to the special range, the evaluation unit includes a change control unit that changes a reference for evaluation by the evaluation unit to a reference for a special performance method for performing the special range A performance analysis device. On the computer,
Setting the information of the normal range normally used by the instrument,
Obtaining an acoustic signal generated by playing the instrument;
Detecting a pitch based on the acquired acoustic signal;
Determining whether the detected pitch belongs to the normal sound range or a special sound range deviating from the normal sound range, based on the set normal sound range information;
When the pitch is determined to belong to the special range, determining the performance as a special performance method for performing the special range;
A program for running On the computer,
Setting the information of the normal range normally used by the instrument,
Obtaining an acoustic signal generated by playing the instrument;
Detecting a sound element including a pitch based on the acquired acoustic signal;
Evaluating the performance based on the detected sound elements;
Determining whether the detected pitch belongs to the normal sound range or a special sound range deviating from the normal sound range, based on the set normal sound range information;
When the pitch is determined to belong to the special sound range, a program for executing a step of changing a reference for evaluation by the evaluation unit to a reference for a special performance method for performing the special sound range.

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