Article View: rec.audio
Article #7006Re: Extracting Mono from Stereo
From: Carl Lowenstein
Date: Mon, 24 Oct 1988 20:24
Date: Mon, 24 Oct 1988 20:24
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>>In article <341@ivucsb.UUCP> I (Todd Day) write:
>>_I have a very interesting signal processing problem for those signal
>>_processing gurus.
>>_I want to use a DSP chip to extract mono from stereo. Does anybody
>>_know of any algorithms to accomplish this or can anyone direct me to
>>_any literature that might describe this?
>>Your smart-aleck answers are not appreciated. I won't summarize these. :-)
If you want to assert that the 'left' signal is L + M/2 and
the 'right' signal is R + M/2, then you will have to devise a way to
solve two linear equations in three unknowns before you can get any further.
Otherwise, as has been pointed out repeatedly,the best you can do with a linear
circuit is the original compatibility designed into FM stereo broadcasts and
stereo LP records, namely, mono = (L + R) (/2 for purists).
--
carl lowenstein marine physical lab u.c. san diego
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cdl@mplvax.ucsd.edu cdl@mplvax.nosc.mil
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!ncrlnk!ncr-sd!hp-sdd!ucsdhub!ucsd!sdcc6!mplvax!cdl From: cdl@mplvax.nosc.MIL (Carl Lowenstein) Newsgroups: rec.audio,sci.electronics Subject: Re: Extracting Mono from Stereo Keywords: mono stereo signal processing Message-ID: <785@mplvax.nosc.MIL> Date: 24 Oct 88 20:24:42 GMT References: <341@ivucsb.UUCP> <343@ivucsb.UUCP> <3836@ncrcae.Columbia.NCR.COM> Reply-To: cdl@mplvax.ucsd.edu.UUCP (Carl Lowenstein) Organization: U.C. San Diego, Marine Physical Laboratory Lines: 22