Apparatus for reproducing digital audio waveform data

Details Apparatus for reproducing digital audio waveform data Apparatus for reproducing digital audio waveform data

1995-03-06

1997-08-19

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

455 43, H03M 166

Patent

active

056593171

ABSTRACT:
In a waveform data reproducing apparatus for a digital audio system, deterioration of sound quality is prevented by a digital audio waveform data reproducing apparatus which includes a digital preemphasis circuit 12 for digitally preemphasis-processing digital audio waveform data a1 to produce digitally preemphasized data c1, a D/A converter 14 for D/A-converting either the waveform data a1, or the digitally preemphasized data c1, a switch circuit 13 for causing the waveform data a1 to be connected to the D/A converter 14 when the waveform data a1 has been emphasis-processed, and for causing the digitally preemphasized waveform data c1 to be connected to the D/A converter 14 when the waveform data a1 is not emphasis-processed, and an analog deemphasis circuit 14 for analogically deemphasis-processing the output signal from the D/A converter 14.

REFERENCES:
patent: 4726042 (1988-02-01), Vance

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