Article View: comp.dsp
Article #349Re: More digital mixer stuff
From: Brian Willoughby
Date: Mon, 02 Oct 1989 02:30
Date: Mon, 02 Oct 1989 02:30
29 lines
1761 bytes
1761 bytes
In article <1160@lakesys.lakesys.com> mikes@lakesys.UUCP (Mike Shawaluk) writes:
>BTW, isn't this "delay" the same "problem" that's been mentioned with certain
>CD players, which use only one D/A converter for both channels, but mux the
>stereo outputs?
You hit it right on the head.
> One person (in a review I read) gave the analogy of standing
>1 cm closer to one of the stereo speakers in the room while listening to a
>CD, as being the effect of this phase shift (i.e., the speed of sound vs. the
>delay).
I had asked earlier about just how important it would be to correct such
phase shifts. From the example of a room environment, I guess the answer
is: not very bloody important. But, if the sound is to later be mixed -
for monophonic broadcast, or any other need to combine the stereo signals
electronically, not acoustically (where placement affects delay anyway) -
then it does become important, merely because the result (with its
peculiar frequency cancellations and reinforcements) would be different
than it would without the shift.
>--
> - Mike Shawaluk
Brian Willoughby
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!microsoft!brianw From: brianw@microsoft.UUCP (Brian Willoughby) Newsgroups: comp.dsp Subject: Re: More digital mixer stuff Message-ID: <7926@microsoft.UUCP> Date: 2 Oct 89 02:30:12 GMT References: <9238@pyr.gatech.EDU> <1989Sep29.102204.8798@ivucsb.sba.ca.us> <1160@lakesys.lakesys.com> Reply-To: brianw@microsoft.UUCP (Brian Willoughby) Organization: Microsoft Corp., Redmond WA Lines: 29