Signal processing device and stringed instrument

A signal processing device, a technology for stringed instruments, applied in the direction of electroacoustic musical instruments, instruments, etc., can solve the problems of whistling and aggravation, and achieve the effect of simple operation and prevention of whistling

Active Publication Date: 2011-09-21
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this requires complex operations by the user as the user needs to find these specific frequencies and accentuate or suppress the level of these specific frequencies
Also, if the sound is produced after amplifying the electrical signal representing the main resonance sound, the main chord of the stringed instrument additionally resonates due to the influence of a specific frequency peak component, thus causing howling

Method used

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  • Signal processing device and stringed instrument
  • Signal processing device and stringed instrument
  • Signal processing device and stringed instrument

Examples

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Embodiment Construction

[0018] [shape structure]

[0019] figure 1 The appearance of a guitar 1 according to an embodiment of the present invention is shown. The guitar 1 is a stringed instrument constituted by attaching a signal processing device 10 and an operation unit 5 to an acoustic guitar including strings 2 , a pickup 3 and a body 4 . The guitar 1 includes a terminal through which the audio signal Sout output by the signal processing device 10 is supplied to an external device. This terminal is connected to the sound player 100 including devices such as a speaker and an amplifier through a shielded wire or the like. Through this connection, the guitar 1 supplies the audio signal Sout to the sound player 100 to emit a corresponding sound.

[0020] The pickup 3 is a conversion unit that includes a piezoelectric element and converts the vibration of the string 2 into an electric signal (hereinafter referred to as "audio signal Sin") through the piezoelectric element.

[0021] The operation u...

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Abstract

The invention provides a signal processing device and a stringed instrument. The signal processing device is composed of an acquiring unit, a filter unit and a changing unit. The acquiring unit acquires a signal indicating vibration of a string. The filter unit performs convolution operation on the signal acquired by the acquiring unit according to a filter coefficient and outputs a resulting signal. The filter coefficient is set such that the resulting signal has a frequency response containing a plurality of peak waveforms associated with resonance of a body of a stringed instrument within a specific frequency range. The changing unit changes the filter coefficient so as to change a peak value of each of the peak waveforms while maintaining a width of each of the peak waveforms in the frequency response.

Description

technical field [0001] The present invention relates to a technique for imparting a resonance effect of a stringed instrument to an audio signal. Background technique [0002] There is a limit to the volume of sound played with a stringed instrument such as an acoustic guitar. Therefore, during a live performance with a stringed instrument in a hall, a microphone is used to receive and amplify the played sound to increase the volume of the played sound. In this method, when other musical instruments are present, the microphone may also pick up sounds produced by the other musical instruments and howling may also occur. Accordingly, stringed instruments may use piezoelectric elements for pickup, thereby converting string vibrations into electrical signals and then amplifying the electrical signals to increase volume. However, the use of piezoelectric elements reduces the effect of the stringed instrument's body resonance sound, which is known as "body resonance", although a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10H3/18
CPCG10H2210/271G10H1/125G10H3/186
Inventor 黑木隆一郎
Owner YAMAHA CORP
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