JP2004295006A - Sound source device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound source device capable of obtaining waveform data that sound effects are given without requiring any external device such as a mixer. <P>SOLUTION: A tone generator TG interprets musical sound data M generated by parts to generate waveform data DTG. Equalizing process parts EQ1 and EQ2, delay processing parts DL1 to DL4, and effect processing parts EF1 to EF8 reflect control data for controlling sound effects on the waveform data DTG and generate waveform data EF1 to EF8 corresponding to combinations of output channels and the control data. Mixing process parts MX1 and MX2 selectively put the waveform data EF1 to EF8 together to obtain waveform data DOL and DOR. Consequently, waveform data DOL and DOR whose sound effects are controlled are obtained from the musical sound data M generated by the parts. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone generator which receives musical tone data generated for each part such as a piano part and a violin part and generates multi-channel waveform data with controlled acoustic effects.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a popular sound source, there is a two-channel specification suitable for stereo reproduction. This popular sound source generally has a function for controlling tone and volume, but a function for imparting an acoustic effect such as panning is provided outside (see Patent Document 1). . Further, as a high-performance specification sound source used for recording or the like, for example, there is a 6-channel specification sound source. In this specification, as shown in FIG. 6, tone data S is output for each part such as a piano or vocal, and channels 1 to 6 are assigned to each part. The tone generator M receives and interprets tone data of each channel of the tone data S, and generates waveform data of a channel corresponding to each part.
[0003]
[Patent Document 1]
JP-A-02-189589 (page 3, lower right column, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, according to the above-described multi-channel specification sound source device according to the related art, the waveform data generated for each channel does not control the sound effects such as panning, volume, and effects. A three-dimensional sound field cannot be formed. Therefore, when using this kind of sound source device, it is necessary to add an acoustic effect to the waveform data of each channel. Therefore, there is a problem that an external device such as a mixer is further required, and the configuration is complicated. The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a sound source device capable of obtaining waveform data to which a sound effect is applied without requiring an external device such as a mixer.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configurations.
That is, the present invention has one or more first channels for inputting tone data, and a plurality of second channels corresponding to a plurality of speakers for emitting a tone. A sound source device that inputs through the first channel, generates a plurality of waveform data corresponding to drive signals of the plurality of speakers, and outputs the generated waveform data through the second channel. Waveform data generating means for generating first waveform data; and reflecting control data for controlling an acoustic effect in the first waveform data according to the second channel. Waveform data generating means for generating a plurality of second waveform data corresponding to a combination with the control data; and selectively synthesizing the plurality of second waveform data into a driving signal for the speaker. A waveform data synthesizing means for obtaining a plurality of waveform data response, characterized by comprising a.
According to this configuration, the control data is reflected on the first waveform data obtained by interpreting the tone data according to the second channel, so that the plurality of second waveform data includes , And data to which a sound effect is added according to the combination of the channel and the type of control data. From the second waveform data, the waveform data of each channel is selected and synthesized according to the control data so that a desired sound effect is obtained when a musical tone is emitted from the speaker.
[0006]
Further, in the sound source device, for example, the waveform data generating means performs a predetermined process for giving the acoustic effect to the first waveform data, and is represented by a power of the number of the second channels. The number of waveform data is generated as the plurality of second waveform data.
Further, in the sound source device, the control data may be any one of first control data related to equalization, second control data related to delay, third control data related to effect, and fourth control data related to volume, and mixing. And fifth control data.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an example of a basic configuration of a sound source device according to an embodiment of the present invention. The sound source device 100 shown in FIG. 1 has a two-channel output specification, and has one input channel (first channel) and two output channels (second channels) corresponding to left and right speakers. It is composed of one tone generator TG, two equalizing processing units EQ1 and EQ2, four delay processing units DL1 to DL4, eight effect processing units EF1 to EF8, and two mixing processing units MX1 and MX2. You. The tone generator TG interprets the musical tone data M and generates musical tone waveform data DTG, and functions as waveform data generating means. The equalizing processing units EQ1 and EQ2, the delay processing units DL1 to DL4, and the effect processing units EF1 to EF8 reflect various control data (C1 to C3) for controlling the sound effect on the waveform data DTG. It generates EF1 to EF8 and functions as waveform data generation means. Further, the mixing processing units MX1 and MX2 selectively synthesize the waveform data EF1 to EF8 in which the sound effects are controlled, and function as waveform data synthesizing means.
[0008]
Here, the tone data M is data in which a plurality of parts such as a piano and vocals are mixed, and is supplied to the tone generator TG. The output section of the tone generator TG is commonly connected to the input sections of the two equalizing sections EQ1 and EQ2, and the equalizing control section C1 is supplied to the equalizing sections EQ1 and EQ2 as the above-described control data. Further, of the two equalization processing units, the output unit of one equalization processing unit EQ1 is commonly connected to the input units of the delay processing units DL1 and DL2, and the output unit of the other equalization processing unit EQ2 is connected to the delay processing units DL3 and DL4. Are commonly connected to the input section of The delay control data C2 is supplied to the delay processing units DL1 to DL4 as the above-described control data.
[0009]
Of the four delay processing units, the output unit of the delay processing unit DL1 is commonly connected to the output units of the effect processing units EF1 and EF2, and the output unit of the delay processing unit DL2 is connected to the input units of the effect processing units EF3 and EF4. The output units of the delay processing unit DL3 are commonly connected to the input units of the effect processing units EF5 and EF6, and the output unit of the delay processing unit DL4 is commonly connected to the input units of the effect processing units EF7 and EF8. The effect control data C3 is supplied to the effect processing units EF1 to EF8 as the above-described control data. Further, among the eight effect processing units, the output units of the effect processing units EF1, EF3, EF5, and EF7 are connected to the input unit of the mixing processing unit MX1, and the output units of the effect processing units EF2, EF4, EF6, and EF8 are mixed. It is connected to the input of the processing unit MX2. Mixing control data C4 is supplied to the mixing units MX1 and MX2.
[0010]
In the above-described configuration, the equalizing processing unit EQ1, the delay processing units DL1 and DL2, the effect processing units EF1 to EF4, and the mixing processing unit MX1 provide a musical sound to be emitted from a left channel speaker (not shown) Focusing on the channel sound), a processing system (hereinafter, referred to as a left channel processing system) for giving an acoustic effect to the waveform data DTG is configured. Further, the equalizing processing unit EQ2, the delay processing units DL3 and DL4, the effect processing units EF5 to EF8, and the mixing processing unit MX2 provide a musical tone to be emitted from a right channel speaker (not shown) (hereinafter referred to as a right channel sound). The processing system (hereinafter, referred to as a right channel processing system) for adding an acoustic effect to the waveform data DTG is configured by paying attention to the above-described processing.
[0011]
Next, the operation of the sound source device 100 according to this embodiment will be described.
First, the left channel processing system will be described. The tone generator TG receives the tone data M via an input channel and interprets the tone data M to generate waveform data DTG. The equalization processing unit EQ1 reflects the equalization control data C1 on the waveform data DTG according to the left and right output channels, and generates the waveform data DEQ1. That is, the equalization processing unit EQ1 performs a process for controlling the equalization amount of the left channel sound on the waveform data DTG based on the equalization control data C1, and outputs the processing result as the waveform data DEQ1.
The delay processing unit DL1 at the subsequent stage performs processing for controlling the delay amount of the left channel sound on the waveform data DEQ1, and outputs musical sound data DDL1. The delay processing unit DL2 performs a process for controlling the delay amount of the right channel sound on the same tone data DEQ1, and outputs the tone data DDL2. Thus, the waveform data DDL1 controls the equalization amount and the delay amount of the left channel sound, and the waveform data DDL2 controls the combination of the left channel sound equalization amount and the delay amount of the right channel sound.
[0012]
The effect processing unit EF1 performs a process for controlling the effect amount of the left channel sound on the waveform data DDL1 and outputs the waveform data DEF1, and the effect processing unit EF2 outputs the right channel sound on the waveform data DDL1. A process for controlling the effect amount is performed, and the waveform data DEF2 is output. Similarly, the effect processing unit EF3 performs processing for controlling the effect amount of the left channel sound on the waveform data DDL2 and outputs the waveform data DEF3. A process for controlling the effect amount of the channel sound is performed, and the waveform data DEF4 is output.
[0013]
As a result, the waveform data DEF1 to DEF4 have their sound effects controlled in accordance with the combination of the above-described control data (C1, C2, C3) and the left and right channels. Specifically, the waveform data DEF1 is obtained by controlling the equalization amount, delay amount, and effect amount of the left channel sound, and the waveform data DEF2 is obtained by controlling the equalization amount of the left channel sound, the delay amount of the right channel sound. , The combination of the effect amounts of the left channel sounds is controlled. The waveform data DEF3 controls the combination of the left channel sound equalization amount, the right channel sound delay amount, and the left channel sound effect amount, and the waveform data DEF4 sets the left channel sound equalization amount. The combination of the delay amount of the right channel sound and the effect amount of the right channel sound is controlled.
These waveform data DEF1 to DEF4 are selectively synthesized (mixed) by the mixing processing unit MX1 to be waveform data DOL for reproducing the left channel sound. Which of the waveform data DEF1 to DEF4 is selected and synthesized is controlled by the mixing control data C4, and the mixing control data C4 is designated according to the user's preference.
[0014]
Similar to the above-described series of processing by the left channel processing system, processing by the right channel processing system is performed, and waveform data DOR for reproducing the right channel sound is generated. The waveform data DOL and DOR generated in this manner correspond to drive signals for left and right speakers (not shown), and are supplied to an external D / A converter via left and right output channels. The analog tone signal converted by the A converter is used as a speaker drive signal.
Here, paying attention to the process until the plurality of waveform data DEF1 to DEF8 are generated from the waveform data DTG, the number of the waveform data DEF1 to DEF8 is the factorial of the number of output channels (“2” in this example). In the example, the number is “3”, which is “8” in this example. That is, in this example, the control amount is set in accordance with the two output channels in the process of giving the sound effect to the waveform data using the control data. Therefore, in principle, the combination of all the control data can be reflected on the waveform data of each output channel, and the sound effect can be controlled finely.
[0015]
FIG. 2 shows a configuration of a sound source device 200 having 16 input channels and 8 output channels. This tone generator 200 is basically an extension of the configuration of the tone generator 100 shown in FIG. 1 described above, and includes line-ins LI1 to LI16 to which channels 1 to 16 are assigned, and a tone generator TG described above. TG1 to TG16, the equalizing control units EQC corresponding to the above-described equalizing processing units EQ1 and EQ2, the delay control units DLC corresponding to the above-described delay processing units DL1 to DL4, and the above-described effect processing unit EF1 To EF8, a newly added volume control unit VOC, a mixer unit MIX corresponding to the above-mentioned mixing units MX1 and MX2, and a line-out to which output channels 1 to 8 are allocated. LO1 to LO8 are provided. The line-ins LI1 to LI16, the equalize control unit EQC, the delay control unit DLC, the effect control unit EFC, the volume control unit VOC, and the mixer processing unit MIX respectively correspond to the above-described musical tone data M via the bus B. Music data MD, equalization control data CD1 corresponding to the above-described equalization control data C2, delay control data CD2 corresponding to the above-described delay control data C3, effect control data CD3 corresponding to the above-described effect control data CD3, volume control data CD4 The mixing control data CD5 corresponding to the above-described mixing control data C4 is supplied.
[0016]
However, in this example, the tone data MD is generated for each of the 16 parts, and the data of each part is given to the line-ins LI1 to LI16, respectively. The configuration from the equalizing control unit EQC to the mixer unit MIX is an extension of the configuration shown in FIG. 1 in response to the increase in the number of channels. That is, the equalization control unit EQC generates eight types of waveform data by reflecting the equalization control data CD1 on the 16 types of waveform data input from the tone generators TG1 to TG16, and outputs a total of 128 types of waveform data. . Hereinafter, similarly, the delay control unit DLC generates eight waveform data for one waveform data in the volume control unit VOC, and the volume control unit VOC generates and outputs 65536 kinds of waveform data in total. The mixer section MIX inputs the 65536 types of waveform data, synthesizes them into waveform data DO1 to DO8 for eight channels based on the mixing control data CD5, and outputs this to the outside via line-outs LO1 to LO8.
[0017]
FIG. 3 shows an application example of the sound source device 200. In the figure, the computer CP executes a process for performance according to the sequence software SEQ, and outputs musical tone data MD to the tone generator 200. Speakers SP1 to SP8 are connected to the above-described line-outs LO1 to LO8 of the sound source device 200. However, although omitted in the figure, the line-out of the sound source device 200 is connected to a D / A converter, and each of the above-mentioned speakers is connected to the output of the D / A converter. Further, the user inputs the above-described various control data (CD1 to CD5) related to the sound effect to the computer CP, and the computer CP supplies the control data to the sound source device 200.
According to this application example, the sound source device 200 receives the tone data MD for each part from the computer CP, performs processing for imparting a sound effect to the tone data MD based on the above-described control data, and performs sound processing. It outputs waveform data DO1 to DO8 for eight channels whose effects are controlled. The waveform data DO1 to DO8 are converted into analog tone signals by a D / A converter (not shown), and the speakers SP1 to SP8 are driven using the tone signals as drive signals.
[0018]
FIG. 4 shows an example of speaker arrangement when the above-described sound source device 200 is applied to an 8-channel surround system. In this example, a total of four speakers SP1 to SP4 are arranged at the front left, right, up and down with respect to the center listener, and a total of four speakers SP5 to SP8 are arranged at the rear left, right, up and down. FIG. 5 shows an example of speaker arrangement when the sound source device 200 is applied to a 5.1-channel surround system. In this example, two speakers SP1 and SP2 are arranged on the left and right in front of the center listener, and surround speakers SP3 and SP4 are arranged on the left and right behind. In addition, a center speaker SP5 and a subwoofer SP6 are arranged at the front center. In any case, according to the sound source device 200, it is possible to precisely control the sound effect of the musical sound emitted from each speaker, and to provide a three-dimensional sound without an external device such as a mixer. A place can be realized freely.
[0019]
【The invention's effect】
As described above, according to the present invention, music data is interpreted to generate first waveform data, and control data is reflected on the first waveform data to generate a plurality of second waveform data. Since the plurality of second waveform data are selectively synthesized, it is possible to obtain waveform data to which an acoustic effect is applied without requiring an external device such as a mixer.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration (principle) of a sound source device according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of a configuration of a sound source device according to an embodiment of the present invention (a configuration in which an input channel and an output channel are extended).
FIG. 3 is a diagram showing an application example of the sound source device according to the embodiment of the present invention.
FIG. 4 is a diagram showing an example of speaker arrangement in an eight-channel surround system to which the sound source device according to the embodiment of the present invention is applied;
FIG. 5 is a diagram showing an example of speaker arrangement in a 5.1-channel surround system to which the sound source device according to the embodiment of the present invention is applied;
FIG. 6 is a diagram for explaining a sound source device according to the related art.
[Explanation of symbols]
TG: tone generator, EQ1, EQ2; equalization processing section, DL1 to DL4; delay processing section, EF1 to EF8; effect processing section, MX1, MX2; mixing processing section, LI1 to LI16; line in, TG1 to TG16; , EQC: Equalize control unit, DLC: Delay control unit, EFC: Effect control unit, VOC: Volume control unit, MIX: Mixer unit, LO1 to LO8: Line out.

Claims (3)

It has one or more first channels for inputting tone data, and a plurality of second channels corresponding to a plurality of speakers for emitting a tone, and stores the tone data in the first channel. A sound source device for generating a plurality of waveform data corresponding to the drive signals of the plurality of speakers and outputting the generated waveform data through the second channel,
Waveform data generating means for interpreting the tone data to generate first waveform data;
Control data for controlling a sound effect is reflected on the first waveform data according to the second channel, and a plurality of second waveform data according to a combination of the second channel and the control data Waveform data generating means for generating
Waveform data synthesizing means for selectively synthesizing the plurality of second waveform data to obtain a plurality of waveform data corresponding to the drive signal of the speaker;
A sound source device comprising: The waveform data generating means,
A predetermined process for giving the acoustic effect is performed on the first waveform data, and a number of waveform data represented by a power of the number of the second channels is generated as the plurality of second waveform data. The sound source device according to claim 1, wherein: The control data is
Any one of first control data related to equalization, second control data related to delay, third control data related to effect, and fourth control data related to volume, and fifth control data related to mixing. The sound source device according to claim 1.

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