JPH0621095U - Sound field playback device for electronic keyboard instruments - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain an electronic keyboard instrument that provides acoustic field and sound image localization like an acoustic grand piano. [Structure] The acoustic sources 4 ₁ , 4 ₂ , 4 ₃ and 4 _{4 respectively} record the acoustic data of a plurality of tapped keys obtained by microphones arranged at different positions of an acoustic grand piano, Speakers 10 ₁ , 1
0 _2, 10 _3, 10 ₄ is a different places in the electronic musical instrument, and is disposed at a position corresponding to the microphone according to the sound source ₄₁ to _4. When a key on the keyboard 1 is tapped, acoustic data corresponding to the tapped key is read from the acoustic sources 4 ₁ to ₄ 4 via the CPU, amplified by the preamplifier 8 and the main amplifier 9, and output from the speakers 10 ₁ to 10 _4. Is pronounced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sound field reproducing device for an electronic keyboard instrument.

[0002]

[Prior art]

 Conventionally, the following two are known as a sound field reproducing device for an electronic keyboard instrument that produces a sound similar to that of an acoustic grand piano.

First, as shown in FIG. 5, a sound source a is recorded by synthesizing sound data of a plurality of keys obtained by microphones arranged at a plurality of points of an acoustic grand piano into one channel and generating a pseudo stereo sound. Connected to the part b, the sound data of the key tapped from the sound source a is generated by the pseudo stereo generation part b into the left signal L and the right signal R, and these signals L and R are preamplifiers c ₁ , c ₂ and The amplifiers are amplified by the main amplifiers d ₁ and d ₂ and reproduced by the speakers e ₁ and e ₂ , respectively, and the other one is arranged at a plurality of points on the acoustic grand piano as shown in FIG. The preamplifier c _{1 is} used to synthesize the sound data of a plurality of keys obtained by the microphone and synthesize them into two channels, left (L) and right (R), respectively, and record the sound sources a ₁ and a ₂ respectively. , To reproduce the sound data of the key keying was outputted from the sound source a _1, a ₂ and connected to the speaker e _1, e ₂ through the c ₂ and the main amplifier d _1, d ₂ in the speaker e _1, e ₂ This is what I did.

[0004]

[Problems to be solved by the device]

 One of the conventional playback devices uses a pseudo-stereo system, so the localization of the sound image shifts depending on the frequency to be played back, making it vague and spacious compared to the normal 2-channel stereo system. The other one is that the localization of the sound image becomes clearer and the spread feeling is improved in the other one, but in the playback of the left and right two channels, the sound field feeling and the localization of the sound image that resonate the entire ground piano are produced. Hard to get. Also, simply increasing the number of speakers makes it impossible to obtain the sound field feeling of an acoustic grand piano because the place where the sound is emitted is different from the sound emitted from each part of the acoustic grand piano.

An object of the present invention is to provide an electronic keyboard instrument capable of obtaining a sound field feeling and sound image localization like an acoustic grand piano.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a plurality of sound sources in which sound data of a plurality of key taps obtained by a plurality of microphones arranged at different positions of an acoustic grand piano are recorded respectively. The plurality of sound sources include means for reading out the sound data of the key tapped from each of the plurality of sound sources, and a plurality of speakers arranged at positions corresponding to the plurality of microphones. It is characterized in that a plurality of sound data corresponding to the respective read keystrokes are input to the plurality of speakers respectively corresponding to the microphones related to the plurality of sound sources.

[0007]

[Action]

 When the acoustic data of the key tapped, which is read from each of the multiple acoustic sources by keystroke, is input to the speakers placed at the locations corresponding to the microphones at different locations on the acoustic grand piano, the multiple speakers output the data. The reproduced sound gives a sound field feeling and sound image localization similar to those of an acoustic grand piano.

[0008]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a block diagram of an embodiment of the present invention. In the figure, 1 is a keyboard, 2 when the keys of the keyboard 1 is keying, key detector for detecting the key depression strength of the key, the key information such as the key number, 3 is CPU, 4 _1, 4 ₂ Reference numerals 4 ₃ and 4 ₄ are, for example, four sound sources connected to the tone generator 5, 6 is a digital signal processor for adding an effect such as reverb to the sound data output from the tone generator 5, and 7 is a digital signal processor. An analog converter, 8 is a preamplifier, 9 is a main amplifier, 10 ₁ , 10 ₂ , 10 ₃ , and 10 ₄ are speakers.

For example, the four acoustic sources 4 ₁ , 4 ₂ , 4 ₃ and 4 ₄ are located at four different locations on the acoustic grand piano, for example, in the upper part near the keyboard of an acoustic ground piano as shown in FIG. The acoustic data corresponding to the musical sounds of the keys tapped by the microphones 11 ₁ , 11 ₂ , 11 ₃ and 11 ₄ arranged at the left and right, the upper part at the rear, and the lower part at the center, for example, are stored for all keys, respectively. Ri memory der that is, the speaker 10 _1, 10 _2, 10 _3, 10 _4, as shown in FIG. 3, grand piano respectively corresponding to microphones 11 ₁ to 11 ₄ which are arranged at different locations Gurandopi Ano Type electronic pianos are arranged in different places.

Thus, for example, when the "do" key is tapped, the key detector 2 detects key information such as key strength and key number, and this key information causes the tone generator 5 to be transmitted to the tone generator 5 via the CPU 3. From the four connected acoustic sources 4 ₁ , 4 ₂ , 4 ₃ , 4 ₄ , the acoustic data of the sound of “do” is read out and converted by the tone generator 5 into the acoustic data corresponding to the keystroke strength. The four audio data are added with effects such as reverb by the digital signal processor 6 and converted into analog signals by the digital / analog converter 7. And the four analog signals are amplified by respective preamplifiers 8 and Mein'a amplifier 9 input to the speaker 10 ₁ to 1 0 ₄ corresponding to the microphone 11 ₁ to 11 _4, pronounced by the speaker 10 ₁ to 10 ₄ . Thus, the performer can obtain a sound field feeling as if he were playing an acoustic grand piano.

FIG. 4 shows another embodiment of the present invention applied to an upright type electronic piano. Also in this embodiment, by arranging the speakers 10 ₁ , 10 ₂ , 10 ₃ , and 10 ₄ in almost the same manner as in the above embodiment, a sound field feeling similar to that of an acoustic grand piano can be obtained. In each of the above-mentioned two embodiments, four sound sources and four speakers were used, but any number of sound sources and speakers may be three or more. In each of the four sound sources, sound data was recorded for all keys, but this would result in an enormous memory capacity. Therefore, for example, sound data was recorded at every 4 to 6 keys, and musical sounds during that time were recorded in the recorded sound data. Create by changing the pitch of the musical sound. For example, it recorded the sound of the "do of c _3", the sound of sound "re""mi" of its surroundings if so as to create by changing the frequency of the sound of the "do of c _3", can save memory.

[0012]

[Effect of device]

 Since the present invention is configured as described above, there is an effect that an electronic keyboard instrument having a sound field feeling and a sound image localization closer to that of an acoustic grand piano can be obtained as compared with the conventional one.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a side view of an acoustic grand piano having, for example, four microphones arranged.

3A and 3B are perspective and sectional views of an embodiment of the present invention.

4A and 4B are a cutaway front view and a cutaway side view of a main part of another embodiment of the present invention.

FIG. 5 is a schematic block diagram of a conventional playback device.

FIG. 6 is a schematic block diagram of another conventional playback device.

[Explanation of symbols]

1 keyboard 2 key detector 3 CPU 4 ₁ to 4 ₄ sound source 5 tone generator 6 digital signal processor 10 ₁ to 10 ₄ speaker 11 _{1 to} 11 ₄ microphone

Claims (1)

[Scope of utility model registration request] 1. A plurality of acoustic sources in which acoustic data of a plurality of keystrokes obtained by a plurality of microphones arranged at different positions of an acoustic grand piano are recorded, and the keystrokes are performed from the plurality of acoustic sources. It comprises means for reading the acoustic data of the key and a plurality of speakers arranged at positions corresponding to the plurality of microphones, respectively, and corresponds to the pressed keys read from the plurality of acoustic sources by the means. A sound field reproducing device for an electronic keyboard instrument, wherein a plurality of sound data are input to the plurality of speakers respectively corresponding to microphones related to the plurality of sound sources.