JP3794805B2 - Music performance device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a music performance device such as an electric musical instrument or an electronic musical instrument.
[0002]
[Prior art]
Conventionally, various types of electric musical instruments and electronic musical instruments have been widely used to imitate acoustic musical instruments that generate acoustic sounds acoustically or to generate new musical sounds that are difficult to generate acoustically. . In an electric musical instrument, a physical vibration is generated as in the case of an acoustic musical instrument, the vibration is converted into an electric signal, amplified, and converted again into an acoustic output by a speaker. Various methods have been devised for electronic musical instruments, such as changing the waveform, frequency, envelope, etc. of analog generated electrical signals, generating musical sound waveforms by digital signal processing, and processing collected sound source waveforms It is generated as a musical sound.
[0003]
With the development of electric musical instruments and electronic musical instruments themselves, a unified standard called MIDI has become widespread from Musical Instrument Digital Interface in order to uniformly transmit music performance information between musical instruments using digital signals. MIDI is a registered trademark of the MIDI Standards Council. When an electronic musical instrument that conforms to the MIDI standard is used, music performance information can be stored in advance as MIDI data, and the stored contents can be read out to allow the electronic musical instrument to perform automatically. Parts that are technically difficult to actually play can be easily played if they are created as MIDI data over time.
[0004]
As described above, the electronic musical instrument is characterized by simplifying music performance and giving many people an opportunity to become familiar with music performance. For example, Japanese Examined Patent Publication No. 62-8895 discloses an idea of an electronic musical instrument that enables a melody or accompaniment to be easily played by playing a rhythm pattern and reading a pitch code stored in a memory. Yes.
[0005]
[Problems to be solved by the invention]
Playing music should bring joy in itself. However, if the performance cannot be performed easily, the joy of performing cannot be felt. In particular, when an acoustic instrument is used, a smooth performance cannot be performed unless the performance technique is acquired and considerable practice is performed. When MIDI data is prepared in advance in an electronic musical instrument and music performance is automated, it is not possible to actually perform music in real time, and it can only be indirectly involved in the data creation stage. In the prior art of JP-B 62-8895, if the rhythm pattern is played in real time, the melody or accompaniment can be performed. I cannot say that I can hardly feel the joy of playing.
[0006]
The objective of this invention is providing the music performance apparatus which can perform music easily and can also feel the pleasure of performing.
[0007]
[Means for Solving the Problems]
The present invention controls a sound source according to music performance information, and in a music performance device for playing music using an acoustic signal generated from the sound source,
Storage means for storing music performance information created in advance;
An input means capable of inputting in real time a signal including a portion where the intensity of the sound continuously changes ;
Rhythm information is detected from the portion where the sound intensity of the signal input to the input means changes continuously, and the music performance information stored in the storage means is read in real time based on the detected rhythm information and stored. And a performance means for performing a music performance by correcting a sound intensity change corresponding to the rhythm information and controlling a sound source according to the modified music performance information. It is a performance device.
[0008]
According to the present invention, input means for detecting the rhythm information from the portion where the strength of the signal input in real time is continuously changed. The music performance information stored in the storage means is read out in real time by the performance means based on the rhythm information, and the sound source is controlled to perform the music performance. If a signal including a portion where the intensity of the sound continuously changes is input to the input means, music performance can be easily performed. When actually performing, the rhythm information can be changed according to the emotions of the performer, so that the joy of playing music can be enjoyed.
[0015]
In the present invention, the input means can input an audio signal as the signal .
When performing the music performance by controlling the sound source according to the stored music performance information, the performance means corrects the sound signal generated from the sound source in time with the audio signal input to the input means. However, it is characterized by performing music.
[0016]
According to the present invention, music performance can be performed in time with the audio signal, so that accompaniment such as karaoke can be matched with singing.
[0017]
Further, the present invention comprises an electric musical instrument that can be played while inputting a signal to the input means by a performance operation as the sound source,
Said playing means, electricity to the instrument during playing, the pitch of the output of the electric instrument, and changes to follow the pitch of the music performance information stored in said storage means.
[0018]
According to the present invention, since the electric musical instrument is used as a sound source and the pitch of the output of the electric musical instrument is made to follow the pitch of the music performance information stored in the storage means, it is possible to easily perform the electric musical instrument.
[0019]
In the present invention, the storage means stores music performance information encoded according to a predetermined standard,
It said playing means, the rhythm information of the music performance information stored in the storage means and be replaced with a rhythm information detected from the signal input to the input means.
[0020]
According to the present invention, for example, when an electronic musical instrument or the like is played and a signal representing the performance content is input to the input means, the music performance information stored in the storage means is detected by the rhythm information detected from the input signal . Since the rhythm information in the music information is replaced and the pitch in the input music performance information is made to follow the pitch in the music performance information stored in the storage means, the performance can be performed easily.
[0021]
The present invention is a playing contents replaced the rhythm information I by the playing means, characterized in that it comprises a storage means for storing in encoded according to the standard.
[0022]
According to the present invention, the performance content by the performance means is encoded and stored in accordance with the standard by the storage means, so that the performance results can be utilized.
[0023]
According to the present invention, the performance means includes an operation for performing a music performance by controlling the sound source according to music performance information stored in the storage means, and rhythm information detected from a signal input to the input means. Based on the above, the music performance information stored in the storage means is read and music performance operation is performed.
[0024]
According to the present invention, the music performance information stored in the storage means is read as it is to control the sound source, and the state of playing music and the stored music performance information are detected from the signal input to the input means. Based on the rhythm information to be read, the sound source is controlled in real time, and the state of playing music can be switched by the switching means. By providing the switching means, it becomes possible to be involved only in the middle of music performance.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
1 to 6, an embodiment of the present invention and related embodiments will be described. In each figure, parts corresponding to those in the preceding figures are given the same reference numerals, and redundant description is omitted.
[0026]
FIG. 1 shows a schematic electrical configuration of the form underlying the present invention. The MIDI keyboard 1 as input means has a plurality of keyboard-like keys, and can generate MIDI messages in real time in response to operations on the keys. The MIDI message is input as serial data to the MIDI IN of the personal computer 2 which is a performance means. The personal computer 2 reads MIDI data stored in the standard MIDI file format or the like on the storage device 4 while displaying an image on the display device 3 according to a program set in advance and stored in an internal memory. The personal computer 2 can provide MIDI data to the MIDI sound source 5 to generate musical sounds. The musical sound generated from the MIDI sound source 5 is electrically amplified by the amplifier 6 and converted into a sound output by the speaker 7. The personal computer 2 includes a keyboard and a mouse as an input device, and can perform various operation instructions and data settings. The change-over switch 8 can be assigned to a switch or key provided on the keyboard by a program, or can be formed in an image displayed on the display screen of the display device 3 and operated with a mouse.
[0027]
As the display device 3, for example, a cathode ray tube abbreviated as CRT, a liquid crystal display device abbreviated as LCD, and the like are often used. A removable storage medium such as a floppy disk or a CD-ROM can be attached to the storage device 4. MIDI data is generally stored on a storage medium in the form of a standard MIDI file. The personal computer 2 can also read the music performance information stored in the storage device 4 and display the contents on the display device 3 in the form of a score. The MIDI sound source 5 includes, for example, an electronic synthesizer, and can generate music according to a MIDI message.
[0028]
Of the MIDI messages, real-time music performance information is represented mainly by a note-on voice message generated when a key is pressed and a note-off voice message generated when the key is released. The note-on message includes a channel designation, a note number indicating the pitch corresponding to the pressed key, and a velocity corresponding to the key pressing method.
[0029]
FIG. 2 shows the concept of switching by the changeover switch 8 in the basic form of FIG. The operation is started from step a1, and it is confirmed in step a2 whether or not the changeover switch 8 is ON. If it is ON, a MIDI semi-automatic performance is performed in step a3. If it is determined in step a2 that the changeover switch 8 has not been turned ON, a normal MIDI automatic performance is performed in step a4. In the MIDI automatic performance, it operates as a sequencer that sequentially applies the MIDI data read from the storage device 4 to the MIDI sound source 5 as a MIDI message. The MIDI semi-automatic performance at step a3 and the MIDI automatic performance at step a4 confirm whether or not the MIDI data stored in the storage device 4 is completed. When it is determined that the MIDI data does not end, the process returns to step a2. Hereinafter, as long as there is MIDI data, the operation from step a2 to step a5 is repeated, and when the MIDI data is completed, the operation is terminated at step a6.
[0030]
By operating the change-over switch 8, the performance state can be switched in the middle of one piece of music, and only the part of interest can be played semi-automatically, and the other part can be played automatically, and only listen to it.
[0031]
FIG. 3 shows the basic operation of the semi-automatic performance of step a3 in FIG. The operation starts from step b1, and in step b2, it waits for a MIDI message indicating note-on to be input from the MIDI keyboard 1. When the note is turned on, the first MIDI data is read from the storage device 4 in step b3. Of the read MIDI data, the velocity is replaced with the velocity in the note-on message input from the MIDI keyboard 1 in step b4. In step b5, the MIDI data whose velocity has been replaced is sent to the MIDI sound source 5 as a MIDI message. In step b6, it waits for a note-off message to be input from the MIDI keyboard 1. If you release the previously pressed key, a note-off message is generated. When the key is held down, the note-on MIDI message must be generated continuously at a time interval not exceeding the time specified as the maximum, so return to step b5 to return the note-on Send out MIDI data corresponding to the continuation. When note-off is input at step b6, the MIDI data sent to the MIDI sound source 5 at step b7 is also changed to a note-off message, and the semi-automatic performance operation corresponding to one note is completed at step b8. .
[0032]
Note that the contents of the MIDI message sent to the MIDI sound source 5 in the entire performance including the semi-automatic performance can be stored in the storage device 4 or the like. By using it as MIDI data for the next performance, the performance content can be brought closer to the desired direction.
[0033]
FIG. 4 shows a schematic electrical configuration of the first embodiment of the present invention. In the present embodiment, the electric musical instrument 9 is used as the input means. In the electric musical instrument 9, for example, a vibration element such as a string is physically vibrated by a performance operation, the vibration is electrically detected and amplified, and converted into an acoustic output. The electric musical instrument 9 can also obtain an envelope change specific to the vibration element. In the present embodiment, an envelope component is extracted from the output of the electric musical instrument 9. Music storage information is stored in the storage device 4 in advance. The personal computer 2 as a performance means can correct the stored music performance information with the extracted envelope component and amplify it with the amplifier 6 to be sonicated as a musical sound. Since the envelope defines the generation state of each sound, information on the rhythm composed of the sounds can also be obtained from the set of envelopes.
[0034]
It is also possible to extract the strength and tempo of the sound as rhythm information from the output of the electric musical instrument 9, and to correct the strength and tempo of a finer rhythm pattern based on the information. In a rapidly changing passage or the like that is difficult to play directly in real time, the output of the electric instrument 9 is partial so that the sound can be generated with a change faster than the actual operation on the electric instrument 9. It may be used as a timing reference. When such a concept is applied, for example, the mouse provided in the personal computer 2 is moved to obtain a time signature, and the tempo and strength of the music performance information stored in the storage device 4 is corrected based on the movement rhythm. Is also possible. It is also possible to capture the movement of a hand or the like, detect the movement state in the image, and control the rhythm of music performance in the same way as conducting.
[0035]
Furthermore, the sound generated by the electric musical instrument 9 is sampled by the personal computer 2, and the playback rate is changed according to the pitch information in the music performance information stored in the storage device 4, or the playback rate is kept constant. If thinning or interpolation is performed, the pitch can be converted to a pitch different from the pitch generated by the electric musical instrument 9.
[0036]
FIG. 5 shows a schematic electrical configuration of a variation of the present invention. In this modification , a modem 11 is connected to the music playing device 10 similar to the basic embodiment of FIG. 1, and rhythm information from a remote place is received via a communication line such as a public telephone line 12, and a performance based on that is possible. I have to. If the music performance device 14 equivalent to the music performance device 10 is connected to the other party via the public telephone line 12 via the modem 13, an ensemble can also be performed via the public telephone line 12. When performing an ensemble, the other party's music performance information may be stored in the storage device 4 in advance, and a musical tone may be generated in accordance with the received rhythm information. Even if the music performance devices 10 and 14 according to the present embodiment comply with the MIDI standard, the information transmitted through the public telephone line 12 is not the entire MIDI message but only the rhythm information. The ensemble can be performed by transmitting in both directions via the public telephone line 12.
[0037]
FIG. 6 shows a schematic electrical configuration of the second embodiment of the present invention. In the present embodiment, the sound processing device 15 detects rhythm information from a change in sound input to the microphone 16 and corrects the music performance information stored in advance in the storage device 4 to match the rhythm information. Perform music. When the music performance information stored in the storage device 4 is a so-called karaoke accompaniment, the rhythm of the accompaniment changes in accordance with the rhythm of the voice of the singer. Therefore, the singer can lead the rhythm, and the accompaniment can follow even when singing at a free tempo.
[0038]
The voice processing device 15 can easily detect the singing portion where the generation of the voice is started from the silent state. The rhythm in the middle of singing is detected from the change in amplitude and the change in pitch. Changes in the pitch can be detected by performing fast Fourier transform in real time using a DSP or the like.
[0039]
In each of the embodiments described above, the personal computer 2 is used as a performance means, but a dedicated sequencer or other computer device can be used in the same manner. Further, in the second embodiment, data processing based on the MIDI standard is performed, but the present invention can be similarly applied to any system conforming to a similar standard. The sound source according to the second embodiment is not necessarily the MIDI sound source 5 and can be used in the same manner as long as it can be controlled by analog voltage or digital data.
[0040]
According to the present invention as described above, by inputting a signal including a part fraction intensity of the sound is continuously changed with respect to the input means, can be performed easily music performance by detecting rhythm information. Rhythm information can be changed according to the player's emotions and so on, so that the pleasure of playing music can be enjoyed.
[0044]
Moreover, according to this invention, since an accompaniment can be matched with the rhythm of a song, it is not necessary to match a song with an accompaniment, and it can sing easily.
[0045]
Further, according to the present invention, since the pitch of the output of the electric musical instrument is made to follow the pitch of the music performance information stored in the storage means, it is possible to easily perform the electric musical instrument.
[0046]
Further, according to the present invention, for example, by playing an electronic musical instrument, the music performance information encoded in the input means is input, and the pitch is made to follow the pitch of the music performance information stored in the storage means. Can be done.
[0047]
Further, according to the present invention, the performance contents by the performance means are encoded and stored in accordance with the standard by the storage means, so that the performance results can be utilized.
[0048]
According to the present invention, the stored music performance information is read as it is to control the sound source, and the sound source is controlled in real time based on the rhythm information detected from the signal input to the input means. Can be switched by the switching means. By providing the switching means, it becomes possible to be involved only in the middle of music performance.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a schematic electrical configuration of an embodiment as a basis for implementing the present invention.
FIG. 2 is a flowchart showing a switching state of the operation of the personal computer 2 by the changeover switch 8 of FIG.
FIG. 3 is a flowchart showing a semi-automatic performance procedure of the basic form of FIG. 1;
FIG. 4 is a block diagram showing a schematic electrical configuration of the first embodiment of the present invention.
FIG. 5 is a block diagram showing a schematic electrical configuration of a modified embodiment of the present invention.
FIG. 6 is a block diagram showing a schematic electrical configuration of a second embodiment of the present invention.

Claims (6)

In a music performance device that controls a sound source according to music performance information and plays music using an acoustic signal generated from the sound source,
Storage means for storing music performance information created in advance;
An input means capable of inputting in real time a signal including a portion where the intensity of the sound continuously changes ;
Rhythm information is detected from the portion where the sound intensity of the signal input to the input means changes continuously, and the music performance information stored in the storage means is read in real time based on the detected rhythm information and stored. And a performance means for performing a music performance by correcting a sound intensity change corresponding to the rhythm information and controlling a sound source according to the modified music performance information. Performance device. The input means can input an audio signal as the signal ,
When performing the music performance by controlling the sound source according to the stored music performance information, the performance means corrects the sound signal generated from the sound source in time with the audio signal input to the input means. The music performance device according to claim 1, wherein the music performance is performed. As the sound source , comprising an electric musical instrument that can be played while inputting a signal to the input means in a performance operation ,
Said playing means, electricity to the instrument during playing, the pitch of the output of the electric instrument, musical performances of claim 1, wherein the change to follow the pitch of the music performance information stored in said storage means apparatus. The storage means stores music performance information encoded according to a predetermined standard,
It said playing means, the rhythm information of the music performance information stored in the storage means, according to claim 1, wherein the replacing the rhythm information detected from the signal input to said input means music Performance device. The playing contents replaced the rhythm information I by the playing means, musical performance apparatus according to claim 4, characterized in that it comprises a storage means for storing in encoded according to the standard. The performance means controls the sound source according to the music performance information stored in the storage means to perform a music performance and the storage means based on the rhythm information detected from the signal input to the input means. 6. The music performance apparatus according to claim 1, further comprising switching means capable of switching between music performance operations performed by reading stored music performance information.

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