Electrical audio signal processing systems and devices – Including amplitude or volume control – With amplitude compression/expansion
Patent
1990-04-18
1992-02-25
Isen, Forester W.
Electrical audio signal processing systems and devices
Including amplitude or volume control
With amplitude compression/expansion
333 14, 381 13, H03G 700
Patent
active
050919571
ABSTRACT:
A decoding arrangement for decoding audio signals previously encoded in accordance with the dbx format, includes a wideband expander instead of a full dbx expander. The wideband expander employs a relatively simple, and therefore inexpensive, peak detector in place of the true RMS detector of a full dbx expander, and does not include apparatus for spectral expansion of the audio signal. Although the decoding is noncomplementary with respect to the encoding, the stereo audio reproduction as perceived by a listener, is surprisingly good.
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A portion of Section-3 of the schematic diagrams for the Magnavox model No. RJ 4340 20" stereo television receiver.
Anderson Mark R.
Parker Robert P.
Chen Sylvia
Emanuel Peter M.
Isen Forester W.
Lenihan Thomas F.
Thomson Consumer Electronics Inc.
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