FIELD: musical instruments.
SUBSTANCE: invention relates to electric musical instruments of heterodyne type and enables to obtain an audio signal in the form of digital samples. Element which generates the difference frequency is an analogue-to-digital converter, sampling frequency of which is set by one signal source, and a signal from the second source is supplied to the input.
EFFECT: disclosed invention enables to combine advantages of digital signal processing methods using heterodyning principle, providing instant response to musician actions.
5 cl, 6 dwg
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