Description: Abstract: A microcomputer-based 8051F digital audio signal source using DDS algorithm for single-chip computer generated audio signals, digital resistor attenuator control of the audio signal amplitude, in the range of 0 ~ 100dB achieved within 1dB of step value, the system computer interface of the centralized multi-channel attenuation control.
Keywords: audio microcomputer control digital/digital audio signal source resistor attenuator C8051F330 CD4053
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