Multiple clock signal generator apparatus

Details Multiple clock signal generator apparatus Multiple clock signal generator apparatus

1993-01-26

1993-11-30

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

331 8, 331 14, 331 17, 331 25, H03L 7099

Patent

active

052669084

ABSTRACT:
A digital-to-analog converter--preamplifier apparatus serving as an interface between a source of digital audio signal data and an amplifier is disclosed. A digital stage receives multiple digital audio signal inputs, a selected one of which is analyzed by a digital audio interface receiver, processed by a digital signal processing device and a delta-sigma modulator prior to passing to the analog stage for conversion from the digital domain into left and right channel analog audio output signals. Volume control is performed on the audio signal in both the digital domain and the analog domain in order to optimize performance and minimize noise. The present invention automatically adjust for input word lengths of greater than 18-bits.

REFERENCES:
patent: 3927384 (1975-12-01), Jezo
patent: 4550292 (1985-10-01), Smith
patent: 4667317 (1987-05-01), Baggen
patent: 4914695 (1990-04-01), Martin
patent: 5056075 (1991-10-01), Marata et al.
patent: 5122763 (1992-06-01), Saeki et al.

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