Signal processing device and stringed instrument

A technology of signal processing device and signal processing unit, which is applied in the direction of electro-acoustic musical instruments, instruments, etc., can solve the problem of not including the resonance component of the main body of the guitar, and achieve the effect of improving the reproduction accuracy

Active Publication Date: 2011-09-21
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the sound output as an electrical signal generated by the piezoelectric element contains almost no resonance components generated by the guitar body, etc.

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

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] [external structure]

[0028] figure 1 The appearance of the guitar 1 according to one embodiment of the present invention is shown. The guitar 1 is a stringed instrument constituted by attaching a signal processing device 10 , an operation unit 5 , and an interface 6 to an acoustic guitar including strings 2 , pickups 4 , and a body 4 . Guitar 1 need not be an acoustic guitar, but may be an electric guitar or the like. Guitar 1 could also be a guitar without body 4 .

[0029] The guitar 1 includes a terminal through which the audio signal Sout output from the signal processing device 10 is supplied to an external device. This terminal is connected to a sound generator 100 including a speaker, an amplifier, and the like through a shielded wire or the like. Through this connection, the guitar 1 provides the audio signal Sout to the sound generator 100 to emit a corresponding sound.

[0030] The pickup 3 is an output unit including a piezoelectric element through whi...

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PUM

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Abstract

The invention provides a signal processing device and a stringed instrument. The signal processing device is composed of a signal acquisition unit and a signal processing unit. The signal acquisition unit acquires a signal corresponding to a vibration propagated from a string attached to a stringed instrument from a pickup element that picks up the signal corresponding to the vibration. The signal processing unit includes a filter that performs convolution operation using a filter coefficient set in the filter, the signal processing unit applying the convolution operation to the acquired signal through the filter and outputting a processed signal. The filter is set with the filter coefficient corresponding to a transfer function which has a frequency response developing a plurality of peak waveforms corresponding to resonance of a body of another stringed instrument different from the stringed instrument within a specific frequency range and which allows components of the peak waveforms to decay more rapidly than a component of a fundamental sound in the vibration of the string in the processed signal.

Description

technical field [0001] The present invention relates to techniques for imparting the resonance effect of a stringed instrument to an audio signal. Background technique [0002] Some stringed instruments, such as guitars, are equipped with pickups that use piezoelectric elements to output vibrations transmitted by the strings as electrical signals. This electrical signal is amplified and output through a speaker, allowing the user to hear the guitar sound at an amplified volume. However, the sound output as an electric signal generated by the piezoelectric element hardly contains a resonance component generated by the guitar body or the like. Accordingly, the sound reproduced from the electric signal gives the listener a different experience from the sound produced by playing an acoustic guitar. [0003] Japanese Patent Application Laid-Open No. 2005-24997 describes a technique in which a signal is convoluted by a finite impulse response (FIR) filter to add a resonant sound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10H3/12
CPCG10H3/186G10H2210/271G10H1/125
Inventor 筱田亮
Owner YAMAHA CORP
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