JP2935036B2 - Music control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone control device in which an electronic musical instrument is combined with an audio data reproducing device such as a CD player.

[Conventional technology]

In order to add a richer playing effect to the performance expression of electronic musical instruments such as a keyboard, a compact disc player (CD player, hereinafter the same) that reproduces audio playback sound based on audio data is combined with the electronic musical instrument. Attention has been paid to musical tone control devices.

With such a combination, for example, in a music composed of a plurality of parts by a plurality of musical instruments, a specific part without the melody of the specific part is reproduced as audio data on a CD player or the like while reproducing the so-called minus one music. An organic performance, such as playing with an electronic musical instrument, becomes possible.

As a conventional example of a musical tone control device realized as a combination of an electronic musical instrument and an audio data reproducing device, a musical tone controlled in sound generation on the electronic musical instrument side depends on a playing state of a playing section such as a keyboard, a string, and a tube. The audio data which is controlled by the audio data reproducing apparatus such as a CD player may be reproduced independently of the playing state of the electronic musical instrument.

[Problems to be solved by the invention]

However, in the case of the conventional example described above, for example, when a musical tone is generated by a performance operation while synchronizing with an audio reproduction sound based on audio data in a CD player, characteristics of a musical tone (for example, volume and Even if various changes can be added to the pitch based on the performance operation, the characteristics of the audio data to be reproduced are constant on the audio reproduction side unless a volume control, a sound quality knob, or an equalizer is operated, for example. . For this reason, even if the tone generation based on the performance operation and the playback of the audio playback sound based on the audio data are performed in conjunction with each other,
There is a problem that a powerful performance cannot be performed.

SUMMARY OF THE INVENTION It is an object of the present invention to variably control the characteristics of audio data reproduced from a reproducing apparatus according to the performance state of an electronic musical instrument, thereby realizing a powerful and integrated performance.

[Means for solving the problem]

The present invention has performance information detecting means for detecting a performance state as performance information. The means detects, for example, a keyboard operation of an electronic keyboard instrument, a string operation of an electronic stringed instrument, a breath operation of an electronic wind instrument, or an operation of a foot switch attached to the electronic musical instrument and used together with the performance as velocity data. Means. Note that the keyboard, strings, pipes, foot switches, and the like may be connected to the outside via MIDI or the like.

Next, there is provided a tone control means for controlling a characteristic of a tone according to the performance information detected by the performance information detecting means. The means is a sound source circuit of, for example, a PCM system, a waveform modulation system, a harmonic addition system, a harmonic subtraction system, or the like.

Subsequently, there is provided playback means for playing back audio data playback sound based on the audio data. The means is, for example, a compact disc player. Of course, a DAT (digital audio tape recorder) or the like may be used.

Further, there is provided audio data control means for variably controlling the characteristics of audio data reproduced by the reproduction means in accordance with the performance information detected by the performance information detection means. The means controls, for example, the volume, surround characteristics, equalizing characteristics, and the like of the audio data reproduced by the reproducing means according to performance information such as velocity data. In this case, the characteristics may be controlled by data obtained by converting the performance information using an appropriate conversion table.

In the configuration described above, the performance information detecting means can detect each performance state in a plurality of performance modes such as a keyboard operation on an electronic keyboard instrument, a string operation on an electronic stringed instrument, a breath operation on an electronic wind instrument, or a foot pedal operation, A mode selection means for selecting a mode of any one of the performance forms is provided, and the audio data control means reproduces the data in the reproduction means with characteristics according to the performance form selected by the mode selection means in accordance with the performance information. The characteristics of the audio data to be performed may be variably controlled. In this case, the characteristics are variably controlled based on data obtained by converting performance information such as velocity data using a conversion table corresponding to each performance mode.

[Action]

When a musical piece is played with a predetermined tone through the musical tone control means, the reproducing means reproduces, for example, audio data reproduced sound based on audio data of another part of the musical piece. In this case, according to the performance information detected by the performance information detecting means, the characteristics (for example, volume, pitch, timbre, effect) of the musical tone are controlled, and the characteristics of the audio data reproduced by the reproducing means, for example, the volume, are controlled. Variable control.

Therefore, for example, when a fast (strong) key press operation is performed on an electronic keyboard instrument, for example, the volume of the generated musical tone is enhanced, and the volume of the audio data reproduced in conjunction therewith is also enhanced. As a result, it is possible to realize a powerful and united performance between the musical sound and the audio reproduction sound.

In addition, as a characteristic of the audio data, besides or instead of the volume, for example, a surround effect,
Or if you control the equalizing effect, etc.,
A richer performance expression can be performed.

〔Example〕

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

FIG. 1 is an overall circuit configuration diagram of a musical tone control device provided with an electronic musical instrument and a compact disc player according to a first embodiment of the present invention.

In the figure, a portion surrounded by a dashed line 100 is a CD player portion (hereinafter, referred to as a CD player portion 100), and a portion surrounded by a dashed line 200 is an electronic musical instrument portion (hereinafter, an electronic musical instrument portion 2).
00).

First, the block configuration of the CD player unit 100 will be described.

The CD 105 is a compact disc, and the CD player 1
The reproduction operation is performed by being set in the holder portion of 00, particularly, not shown.

The CD operation unit 101 has a switch for a reproduction function for start and stop, a switch for a pause function, a switch for a special function such as random memory music selection, and the like, which are provided in a normal CD player.

The CD control unit 102 is, for example, a microprocessor, and C
It controls the entire D player unit 100, and exchanges subcode data with the subcode signal processing circuit 115. When driving the CD 105, the disk servo circuit 103
And a drive control signal to the pickup servo circuit 104.

The disk servo circuit 103 controls the number of rotations of the disk motor 106 that drives the CD 105 to rotate so that the linear velocity (Linear Velocity) of each track of the CD 105 is constant.

The pickup servo circuit 104 is an optical pickup 107 that irradiates each track of the CD 105 with a laser beam.
Of focus servo and tracking servo. The focus servo detects a focus error from the state of the reflected light of the laser beam, and controls and drives an objective lens in the optical pickup 107 in the optical axis direction based on the focus error. The servo controls the laser beam emitted from the optical pickup 107 in the radial direction of the CD 105 while detecting the deviation of the laser beam from the center of the track of the CD 105, thereby controlling the laser emitted from the optical pickup 107.
The beam is controlled so that the center of the track of the CD 105 is accurately irradiated.

Here, a projection called a pit is engraved on the side of the CD 105 to which the laser beam is irradiated.
PCM signal (digital signal) is recorded. And
The optical pickup 107 detects the presence or absence of a pit based on the amount of reflected light of the irradiated laser beam, and demodulates an electric signal corresponding to the presence or absence of the pit and the length of the pit.
Output to 8.

The demodulation circuit 108 detects a frame synchronizing signal from the electronic signal output from the optical pickup 107, identifies the delimiter and order of frames, which are audio data and subcode reproduction processing units, and furthermore, EFM modulation within each frame. The demodulated data is demodulated. Then, of the data subjected to the EFM demodulation, the audio data is output to the audio data signal processing circuit 109, and the subcode is output to the subcode signal processing circuit 115.

The audio data signal processing circuit 109 writes the input audio data into an internal RAM (not shown), performs an error correction process based on the Reed-Solomon code, performs a de-interleave process, and Restores each sample of 16-bit digital audio data in units. Then, these sample data are output to a D / A converter (digital / analog converter) 110. This output is stereo.

The D / A converter 110 includes an LPF (low-pass filter) 111 having a half cutoff frequency of the sampling frequency,
The input 16-bit digital audio data (stereo) is converted into a corresponding stereo analog signal and output to the electronic volume 112.

The electronic volume 112 is controlled by a tone control circuit 201, which will be described later, and the stereo analog audio data whose volume is controlled is emitted to the outside via an amplifier (amplifier) 113 and a speaker 114.

The sub-code signal processing circuit 115 performs an error detection and correction process and a de-interleave process on the sub-code data to restore the sub-code. Then, a specific bit of the restored subcode is stored in the CD control unit 102.
Output to Based on this, the CD control unit 102 performs election control, grasps and controls the time progress of each music program, and the like.

 Next, the block configuration of the electronic musical instrument section 200 will be described.

The musical instrument control unit 201 is, for example, a microprocessor, and converts the detection signal of each operation from the key touch detection circuit 202, the string vibration detection circuit 203, the breath operation detection circuit 204, and the foot pedal detection circuit 205 into an internal A / D conversion. The signal is converted into a digital signal by the detector 213 and set in each register 214 (a plurality of registers). Then, based on the switching signal from the performance mode switching circuit 206, one of the operation detection signals set in the register 214 is converted by a conversion table (not shown), and the electronic volumes 112 and 210 are controlled based on the conversion. I do. Further, the tone generator 207 is controlled based on the operation detection signal and a note on / off (not shown), a key code and the like.

The key touch detection circuit 202, the string vibration detection circuit 203, the breath operation detection circuit 204, and the foot pedal detection circuit 205
In particular, key touch information, string vibration information, breath information, and foot input from a keyboard instrument input section, a string instrument input section, a wind instrument input section, and a foot pedal attached thereto are connected to the outside via a MIDI interface (not shown). The information on the pedal depression amount (angle) is detected and output to the musical instrument control unit 201. The electronic musical instrument unit 200 itself may have a form as an electronic keyboard musical instrument including one of the input units, for example, a keyboard musical instrument input unit and a foot pedal.

The tone generator 207 is, for example, a tone generator of a PCM system, a waveform modulation system, an overtone addition system, an overtone subtraction system, or the like, and generates a corresponding digital tone signal under the control of the tone control unit 201 described above.

The digital tone signal is converted to a corresponding analog tone signal by a D / A converter 208 and an LPF (low-pass filter) 209 having a half cutoff frequency of the sampling frequency, and output to the electronic volume 210.

The electronic volume 210 is controlled by the above-described musical tone control unit 201, whereby an analog musical tone signal whose volume is controlled is emitted outside through an amplifier (amplifier) 211 and a speaker 212.

In the above configuration, the electronic volumes 112 and 210
A circuit for electronically controlling the volume of an input signal in accordance with digital data from the musical instrument control unit 201, for example, a circuit in which one of a plurality of resistance values is selected in accordance with digital data, and a circuit in which the amplification of a transistor is determined in accordance with digital data Various types, such as a changing type, can be adopted.

The operation of the first embodiment having the above configuration will be described with reference to the operation flowchart in each performance mode of FIG. 2 and the CD reproduction operation flowchart of FIG.

2 (a) to 2 (d) show the musical instrument control section 201 when the keyboard mode, string instrument mode, wind instrument mode or foot pedal mode is selected in the performance mode switching circuit 206 of FIG. 4 is a flowchart of each operation of a program executed by the program. These programs are stored in a ROM (not shown) or the like, and are repeatedly executed as a part (subroutine) of a main operation flowchart (not shown) which is repeatedly executed at high speed in the musical instrument control unit 201.

First, the operation when the keyboard instrument mode is selected by the performance mode switching circuit 206 will be described with reference to FIG.

First, information on a key touch state (key pressing speed) from a keyboard instrument input unit (not shown) detected by the key touch detection circuit 202 shown in FIG.
The digital value is converted by the / D converter 214 (S1 _a ).

The detected key touch digital value is stored in the register 214 for the keyboard instrument mode (S2 _a).

The key touch digital value stored in the register 214 is converted into a control data value suitable for the volume characteristics of the instrument side and the CD side by a suitable conversion table for a keyboard instrument mode (not shown). They are respectively outputted to the electronic volume 112 of the electronic volume 210 and CD side instrument side (S3 _a).

The above operation is executed at each repetition of a main operation flowchart (not shown).

Next, when the string mode is selected by the performance mode switching circuit 206, the operation flowchart of FIG. 2B is executed.

First, information on a string vibration state (ballistic force) detected from a stringed instrument input unit (not shown) detected by the string vibration detection circuit 203 in FIG.
It is converted into a digital value at 214 (S1 _b).

The detected string vibration digital value is stored in the register 214 for string instruments mode (S2 _b).

The string vibration digital value stored in the register 214 is suitable for the volume characteristics on the musical instrument side and the CD side by an appropriate conversion table for the stringed instrument mode (not shown) in the same manner as in the keyboard instrument mode. after being converted into control data values are respectively outputted to the electronic volume 112 of the electronic volume 210 and CD side instrument side (S3 _b).

Further, when the wind instrument mode is selected by the performance mode switching circuit 206, the operation flowchart of FIG. 2C is executed.

First, information on a breath operation state (alternatively, a lip operation state) from a wind instrument input unit (not shown) detected by the breath detection circuit 204 in FIG. The digital value is converted by the / D converter 214 (S1 _c ).

The detected breath digital value is stored in the register 214 for the wind mode (S2 _c).

The breath digital value stored in the register 214 is suitable for the volume characteristics on the musical instrument side and the CD side by an appropriate conversion table for the wind instrument mode (not shown) in the same manner as in the keyboard instrument mode and the like. after being converted into control data values are respectively outputted to the electronic volume 112 of the electronic volume 210 and CD side instrument side (S3 _c).

When the foot pedal mode is selected by the performance mode switching circuit 206, the operation flowchart of FIG. 2D is executed.

First, information on a foot pedal state (depressed amount or angle) from a foot pedal (not shown) detected by the foot pedal detection circuit 205 in FIG.
Incorporated into 201, it is converted into a digital value by the A / D converter 214 (S1 _d).

Detected foot pedal digital value is stored in the register 214 for the foot-pedal mode (S2 _d).

The foot pedal digital value stored in the register 214 is converted into a control data value suitable for the volume characteristics of the instrument side and the CD side by an appropriate conversion table for a foot pedal mode (not shown). They are respectively outputted to the electronic volume 112 of the electronic volume 210 and CD side instrument side (S3 _d).

FIG. 3 is an operation flowchart of an operation of reproducing the audio reproduction sound based on the audio data executed in the CD player unit 100 in parallel with the operation of the musical instrument control unit 201 described above.

First, when the CD start key is operated in the CD operation unit 101, the audio data signal processing circuit 109 performs the operation of reproducing the audio reproduction sound based on the audio data as described above (S4).

Then, the above operation is repeated until the end of the reproduction of the audio reproduction sound based on the audio data is detected (S5 → S4).

When the end of reproduction is detected, the CD control unit 102 in FIG.
By controlling the disk servo circuit 103, the drive of the disk motor 106 is stopped and the CD reproduction is terminated (S5 → S6).

After that, the process shifts to an operation flow in a standby state (not shown).

An operation example of the first embodiment realized by the operation flowcharts of FIGS. 2 and 3 will be described with reference to an operation conceptual diagram of FIG.

As shown in FIG. 4, on the CD 105 (see FIG. 1), the audio data is stored in a program area 301 extending from the inner circumference to the outer circumference of the track of the disk of the CD 105 (FIG. 1A).
, And a plurality of music pieces are recorded as part music pieces A, part music pieces B,... (FIG. 9B). In FIG. 2A, the innermost area (area having a diameter of 46 mm to 50 mm) of the disc is called a lead-in area 302, and TOC (Tab) is stored in this area as subcode data.
information corresponding to a table of contents for one disc called "le of Contents". This TOC data is
Detected by the CD control unit 102 via the subcode signal processing circuit 115 shown in the figure, music selection, time control of music progress, and the like are performed.

From the recording format described above, conceptually, the CD
From the inner circumference to the outer circumference of the tracks of 105 disks,
Part music A and part music B are played back in this order.

In synchronization with this, the player operates any of the keyboard instrument input section, the string instrument input section, the wind instrument input section, and the foot pedal, and the performance state detected thereby is shown in FIG. (In the figure, it is indicated by the key touch force. For example, in the initial stage of the reproduction of the part tune A of the audio data to be reproduced, the performance is performed with a large key touch force (fast key operation), and at the intermediate position. ), With a moderate key touch force, and at the end of the performance, it plays with a gradually weaker key touch force).

In synchronization with this, the volume level of the musical tone generated from the speaker 212 of the electronic musical instrument section 200 changes as shown in FIG. 4D, and the volume level of the audio data generated from the speaker 114 of the CD player section 100 also changes. It changes as shown in FIG. By changing each change and characteristic in the musical instrument control unit 201, it is possible to control each change in volume level to have a different characteristic.

In the first embodiment, the portion from the D / A converter 110 to the speaker 114 in FIG. 1 is represented by monaural, but the above operation is actually performed on stereo audio data.

FIG. 5 shows the CD of FIG. 1 as a second embodiment of the present invention.
This figure shows a case where a surround circuit is provided in place of the electronic volume 112 of the player section 100, and the surround circuit is controlled by the musical instrument control section 201 in FIG. 1 according to the playing state.

In the figure, LPF 111 of the left channel of FIG. 1 (L _ch hereinafter the same) and right channel (R _ch, hereinafter the same) for each output, first, the difference signal of the differential signal circuit 401 (L _ch -R _ch) Generate

This difference signal is delayed by the variable delay circuit 402, a delay signal obtained by this is level controlled by level control circuit 404 at its output adder 405 _L and the subtractor 405 _R, the L _ch and R _ch Each signal is added and subtracted.

Each of the processed L _ch and R _ch signals is _{supplied to} an amplifier 406 _L
And 406 _R , respectively, and are emitted from speakers 407 _L and 407 _R.

On the other hand, the parameter register 403 stores a predetermined set of data out of a set of delay time control data and level control data stored in advance in response to a control unit signal from the musical instrument control unit 201 in FIG. Select the variable delay circuit 402
And output to the level control circuit 404. Thereby, the delay time and the level are controlled via both circuits 402 and 404 according to the performance state.

For example, for a large hall, the delay time is 3.2 seconds and the level is -10 dB. For a small hall, the delay time is
For 1.8 sec, the level is set to -5 dB, one of these sets is selected and its control data is output.

Of course, a separate rear speaker may be provided to supply the surround signals (the respective outputs of 405 _L and 405 _R ) to the rear side. Further, the phase and frequency characteristics may be controlled.

FIG. 6 shows a third embodiment of the present invention, the CD of FIG.
This shows a case where an equalizer circuit is provided instead of the electronic volume 112 of the player section 100, and this is controlled by the musical instrument control section 201 in FIG. 1 according to the playing state.

In the figure, the output of the L _channel of the LPF 111 in FIG. 1 is, for example, four bandpass filters (BPs) having different center frequencies.
F, hereinafter the same) input to 501 _L1 ~501 _L4, level controlled by level control circuit 502 _L1 to 502 _L4 for each output is performed, the respective output is added by the adder 503 _L, left channel The output (L _ch out) is output to the same amplifier, speaker, and the like as in FIG.

LPF111 output of R _ch likewise in (FIG. 1), and enter the center frequency is different BPF501 _R1 ~501 _R4, level controlled by level control circuit 502 _R1 to 502 _R4 for each output is performed,
As each output is added by the adder 503 _R, a right channel output (R _ch out), the same amplifier and Figure 5, is output to the speaker.

The parameter register 504 selects a predetermined set of data from a set of previously stored level control data in accordance with a control signal from the musical instrument control unit 201 shown in FIG. Output to 502 _{L1 to} 502 _L4 and 502 _{R1 to} 502 _R4 . Thus, the level of each frequency band is controlled according to the performance state.

For example, bass sounds are emphasized, only high and low frequencies are emphasized, or unnecessary high frequencies are cut in order to emphasize a voice band (singing voice).

In the first to third embodiments described above, audio data is recorded on a CD board and reproduced via a CD player. However, the present invention is not limited to CDs, and DAT (Digital Audio Tape Recorder) Etc. may be used. In addition to the above-described embodiments, the operation state of the modulation wheel and the pitch bend wheel of the electronic keyboard instrument, the operation state of the tremolo arm and the chalking operation state of the string of the electronic stringed instrument, and the lip operation state of the electronic wind instrument (these operations are referred to as Then, the characteristic (eg, volume) of the reproduced audio data may be variably controlled in accordance with the pitch or the like of the musical tone to be generated.

〔The invention's effect〕

According to the present invention, the characteristics of audio data reproduced by the reproducing means are variably controlled in accordance with the performance information detected by the performance information detecting means.
If a fast (strong) key press operation is performed, the volume of audio data reproduced in conjunction with the key press operation can be controlled so as to be emphasized, whereby a powerful and integrated performance can be realized.

Also, if the characteristics of the audio data are controlled in addition to or instead of the volume, for example, a surround effect or an equalizing effect, a richer performance expression can be realized in accordance with the performance information described above. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention, FIGS. 2 (a) to (d) are operation flowcharts in each performance mode, FIG. 3 is a CD reproduction operation flowchart, (A) to (d) are conceptual diagrams of the operation of the first embodiment, FIG. 5 is a configuration diagram of a surround circuit in the second embodiment, and FIG. 6 is an equalizer circuit in the third embodiment. FIG. 100 CD player section, 101 CD operation section, 102 CD control section, 103 disk servo circuit, 104 pickup servo circuit, 105 CD, 106 disk motor, 107 light Pickup 108: Demodulation circuit, 109: Audio data signal processing circuit, 110, 208: D / A converter, 111, 209: Low-pass filter (LPF), 112, 210: Electronic volume, 113, 211 ... … Amplifier, 114, 212… speaker, 115… sub-code signal processing circuit, 200… electronic musical instrument part, 201… musical instrument control part, 202… key touch detection circuit, 203… string vibration detection circuit, 204 …… Breath operation detection circuit, 205… Foot pedal detection circuit, 206… Performance mode switching circuit, 207… tone generator circuit, 213… A / D converter, 214… register

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 31/02 G10H 1/00

Claims (2)

(57) [Claims] 1. Performance information detecting means for detecting a performance state as performance information; tone control means for controlling the characteristics of musical sounds in accordance with the performance information detected by the performance information detecting means; Reproducing means for reproducing, according to the performance information detected by the performance information detecting means,
An audio data control unit variably controlling characteristics of audio data reproduced by the reproduction unit. 2. The performance information detection means is capable of detecting each performance state in a plurality of performance modes, and has a mode selection means for selecting a mode of any one of the plurality of performance modes. The audio data control means variably controls the characteristics of audio data reproduced by the reproduction means with characteristics according to the performance mode selected by the mode selection means according to the performance information detected by the performance information detection means; The musical sound control device according to claim 1, wherein: