Digital signal processing circuit

Details Digital signal processing circuit Digital signal processing circuit

1988-02-19

1990-03-20

Shoop, Jr., William M.

Coded data generation or conversion

Analog to digital conversion followed by digital to analog...

341139, H03M 118

Patent

active

049105159

ABSTRACT:
A digital signal processing circuit for processing input analog signals such as audio signals and video signals in the form of digital signals comprises an analog-to-digital converter for converting an input analog signal to a digital signal, a digital signal processing section for subjecting an output digital signal of the analog-to-digital converter to a digital signal processing including a processing for digitally amplifying the signal, a digital-to-analog converter for converting an output signal of the digital processing section to an analog signal, and an attenuator provided on the input side of the digital signal processing section for attenuating the digital signal provided by the analog-to-digital converter to a value which is below a value at which the digital signal processing section overflows. When the digital signal processing section has a gain, the level of the output of the analog-to-digital converter is attenuated to a value at which the digital signal processing section will not overflow so that occurrence of clipping distortion in the output waveform can be prevented.

REFERENCES:
patent: 3999129 (1976-12-01), Kasson
patent: 4349913 (1982-09-01), Skoog

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