Definition: A spectrophone is a type of sound sensor used in electronic instruments and audio systems. It consists of a small, thin metal plate that vibrates when an input signal is applied to it. When the signal passes through the plate, it produces electrical signals that are proportional to the amplitude of the input signal. The frequency at which the plate vibrates can be determined by measuring the voltage across the plate and using the relationship between the voltage and the frequency of the output signal. This allows for precise control
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