Qsound surround synthesis from stereo
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United States of America Patent
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-
Mar 6, 2001
Grant Date -
N/A
app pub date -
Apr 9, 1998
filing date -
May 19, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The inventive mechanism produces multiple output signals from a two-channel stereo input signal. The mechanism produces a first pair of output signals which retain the monaural information in the stereo input signal. The first pair of signals each comprise a combination of one of the input channels and filtered signal produced from a difference of both input channels. The mechanism produces a second pair of output signals which lacks the monaural information. The second pair of output signals each comprise a combination of one of the input channels and an inverse filtered signal produced from a difference of both input channels. Q-filters are used to provide the various filtered signals.
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