JPH02187797A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To simulate the delay synthesis effect by musical instruments and performance sound fields by providing acoustic body synthesizing sections constituted of digital filters including registers to delay voice data and multipliers, etc. CONSTITUTION:The output of a digital adder 4 is put through the musical instrument acoustic body synthesizing section 7 and the sound field acoustic body synthesizing section 8 into a D/A converter 5. The inputs to the synthesizing sections 7, 8 are delayed in one clock unit by the delay registers 21 and are multiplied by the coeffts. of coefft. memories 23 the contents of which are set in a control section 1, by means of the multipliers 22. After these inputs are added by the digital adder 4, the input are added to musical tones data in an adder 25 and are outputted to a converter 5. The simulation of the effect of both the acoustic bodies is possible in this way and the electronic musical instrument which can produce the outputs with the acoustic effect approximate to the acoustic effect of the environment of the performance sound field is obtd.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention synthesizes musical instrument sounds based on digital data.
The present invention relates to a reproducing electronic musical instrument, and particularly relates to a function of simulating the acoustic body effect of the musical instrument and the sound field acoustic body effect to be played.

[Conventional technology]

FIG. 3 is a configuration diagram showing a conventional electronic musical instrument.

In FIG. 3, 1 is a control unit, 2 is a plurality of tone synthesis units,
3 is tone data memory, 4 is digital adder, 5 is D
/A converter, 6 is an amplifier.

Next, the operation will be explained.

The control section 1 detects timbre and scale information etc. from manual input using a keyboard or the like, and instructs and controls the plurality of timbre synthesis sections 2 to output a corresponding tone, one tone scale, etc.

The timbre synthesis section 2 reads the corresponding timbre data from the timbre data memory 3 in accordance with the instructions from the control section 1, and outputs the corresponding timbre as audio data in the specified scale.

Digital data output from each tone synthesis section 2 (
audio data) are added by a digital adder 4,
The signal is converted into an analog signal by the D/A converter 5, amplified by the amplifier 6, and output to the outside.

[Problem to be solved by the invention]

Since the conventional digital electronic musical instrument is configured as described above, the sound from the sounding body 12 is delayed and synthesized inside the musical instrument acoustic body 11 as shown in FIG.
The problem was that it could not simulate the effects of internal delayed synthesis.

The present invention was made to solve the above-mentioned problems, and an object of the present invention is to obtain an electronic musical instrument that can simulate the acoustic body effect inside the musical instrument acoustic body and the sound field acoustic body effect.

[Means to solve the problem]

The electronic musical instrument according to the present invention is a musical instrument that includes a digital filter that includes a delay register that delays audio data, a coefficient memory that stores coefficients to be multiplied by the audio data, and a multiplier that multiplies the coefficients and the audio data. A sound body synthesis section or a sound field acoustic body synthesis section is provided.

[Effect]

In this invention, by appropriately setting the number of delay registers and coefficients in the digital filter, it is possible to simulate the effects of a musical instrument acoustic body and a sound field acoustic body.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram showing an embodiment of an electronic musical instrument according to the present invention.

In FIG. 1, 1 is a control section, 2 is a plurality of tone synthesis sections,
3 is tone data memory, 4 is digital adder, 5 is D
6 is an amplifier, 7 is a musical instrument sound body synthesis section, and 8 is a sound field sound body synthesis section.

Next, the operation will be explained.

Control unit 1. Tone synthesis section 2. The operations of the timbre data memory 3 and digital adder 4 are similar to those of conventional electronic musical instruments.

In this invention, the musical sound data added by the digital adder 4 is first synthesized with the effect of the musical instrument's acoustic body by the musical instrument acoustic body synthesis section 7, and then by the sound field acoustic body synthesis section 8. The effects of are synthesized. Next, the musical sound data in which the musical instrument sound body effect and the sound field sound body effect are synthesized is converted into an analog signal by the D/A converter 5, and then amplified by the amplifier 6 and output to the outside.

Next, a configuration for realizing the musical instrument acoustic body synthesis section 7 and the sound field acoustic body synthesis section 8 will be explained using FIG. 2.

In FIG. 2, 21 is a plurality of delay registers, 22 is a plurality of multipliers, 23 is a plurality of rewritable coefficient memories,
24 and 25 are digital adders.

That is, both the musical instrument sound body synthesis section 7 and the sound field sound body synthesis section 8 are constituted by transversal filters shown in FIG. After being delayed in clock units, the multiplier 22 multiplies the coefficients preset in the coefficient memory 23, and each multiplication result is added by the digital adder 24, and then the digital adder 25 adds musical tone data. is added and output.

The musical instrument sound body synthesis unit 7 and the sound field sound body synthesis unit 8 are both configured by the above-mentioned transversal filters, but since the number of stages of the delay register 21 depends on the reverberation time, each of them uses a transversal filter with a different number of stages. becomes.

By configuring the coefficient memory 23 so that its contents can be changed by the control unit 1, it becomes possible to easily change the musical instrument sound body effect and the sound field sound body effect.

In the above embodiment, an electronic musical instrument is shown that is equipped with both the musical instrument acoustic body synthesis section 7 and the sound field acoustic body synthesis section 8, but it is also possible to include only one of them.

Furthermore, although an example has been shown in which the musical instrument sound body synthesis section 7 and the sound field sound body synthesis section 8 are constituted by continuous connection type transversal filters, it is also possible to configure them by other digital filters having delay registers and coefficient memories. The same effects as in the embodiment are achieved.

〔Effect of the invention〕

As described above, the present invention provides a musical instrument that includes a digital filter that includes a delay register that delays audio data, a coefficient memory that stores coefficients to be multiplied by audio data, and a multiplier that multiplies the coefficients and audio data. Since the acoustic body synthesis section or the sound field acoustic body synthesis section is provided, it is possible to simulate the effects of the musical instrument acoustic body and the sound field acoustic body, and it is possible to create musical sounds that are closer to those of musical instruments and closer to the sound field environment in which they are played. This has the advantage that it can be output with acoustic effects.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of an electronic musical instrument of the present invention.
Figure 2 is a configuration diagram of the musical instrument acoustic body synthesis section and sound field acoustic body synthesis section in Figure 1, Figure 3 is a configuration diagram of a conventional electronic musical instrument, and Figure 4 is a musical instrument acoustic body effect and sound field acoustic body effect. FIG. In the figure, 1 is a control unit, 2 is a timbre synthesis unit, 3 is a timbre data memory, 4 is a digital adder, 5 is a D/A converter, 6 is an amplifier, 7 is a musical instrument acoustic body synthesis unit, and 8 is a sound field. In the acoustic body synthesis section, 21 is a delay register, 22 is a multiplier, 23 is a coefficient memory, and 24 and 25 are digital adders. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] An electronic musical instrument comprising a timbre data memory that stores timbre data, and a timbre synthesis section that synthesizes audio data from the timbre data from the timbre data memory and an output from a control section that detects scale information. A musical instrument acoustic body synthesis unit or a sound field acoustic device configured by a digital filter consisting of a delay register that delays the audio data, a coefficient memory that stores coefficients to be multiplied by the audio data, and a multiplier that multiplies the audio data by the coefficients. An electronic musical instrument characterized by having a body synthesis section.