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- From: trebor@foretune.co.jp (Robert J Woodhead)
- Subject: Re: Computing Surround Sound
- Message-ID: <1992Nov16.052121.4390@foretune.co.jp>
- Keywords: An odd question, but...
- Organization: Foretune Co., Ltd.
- References: <1992Nov12.054614.29516@foretune.co.jp> <4430@vidiot.UUCP>
- Date: Mon, 16 Nov 1992 05:21:21 GMT
- Lines: 33
-
- brown@vidiot.UUCP (Vidiot) writes:
- >In other words, take the audio you want for the rear channel, put it into
- >the left channel, take the same audio, 180 degree phase shift it and put that
- >result into the right channel.
-
- Ok, so what you are saying is: if I have 3 digital datastreams for L,
- R, and Rear, the left output stream is L+Rear (ie: add the values of
- the 16 bit samplings) and the right channel is R-Rear.
-
- Ok, that seems easy enough. Now for the next question: Is it possible
- to trick the ear into thinking that the sound is coming from, say,
- the left rear or the right rear?
-
- I've never had a surround sound decoder (gonna get one soon) but I
- assume you basically have 3 speakers, one per channel. If so, then
- the speakers are basically a triangle around the listener, right?
-
- That being the case, is it possible to position a sound within the
- triangle by mixing it proportionately into the three pre-encoding
- data streams (ie: a sound that you want to be heard right inside
- the viewers head would be equal on all channels, but this means
- that the right channel would be 0!), or is it the case that a sound
- can either be on the rear channel or somewhere on the line between
- the L and R speaker, or perhaps is there a "dead zone" inside the
- triangle you are not allowed to position a sound in.
-
- My eventual goal is to write some mixing software that will let me
- position and move sounds and mix them all together, by the way.
-
- --
- +---------------------------------------------------------------------------+
- | Robert J. Woodhead, Biar Games / AnimEigo, Incs. trebor@foretune.co.jp |
- | AnimEigo US Office Email (for general questions): 72447.37@compuserve.com |
-