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- Xref: sparky rec.video:13576 rec.video.production:1792
- Path: sparky!uunet!destroyer!sol.ctr.columbia.edu!usc!usc!not-for-mail
- From: alves@calvin.usc.edu (William Alves)
- Newsgroups: rec.video,rec.video.production
- Subject: Re: Computing Surround Sound; adding surround to home videos
- Date: 16 Nov 1992 17:59:32 -0800
- Organization: University of Southern California, Los Angeles, CA
- Lines: 16
- Message-ID: <1e9jm4INN4s9@calvin.usc.edu>
- References: <1992Nov12.054614.29516@foretune.co.jp> <4430@vidiot.UUCP> <1992Nov15.171450.9320@cis.ohio-state.edu>
- NNTP-Posting-Host: calvin.usc.edu
- Keywords: An odd question, but...
-
- In article <1992Nov15.171450.9320@cis.ohio-state.edu> fontana@iguana.cis.ohio-state.edu (Mark Fontana) writes:
-
- >Are there any consumer-level Dolby A encoding boxes? Is there much
- >more to it than this?
-
- You know, of course, that Dolby A is a noise reduction system, not a
- surround system. I am pretty positive that there exists no consumer version
- of Dolby A. This is because it requires great precision in the calibration
- of input and output levels. If they are as little as a 1/2 db off, Dolby
- A will add more noise than it takes away. This is OK for a professional
- studio that aligns and calibrates their tape machines 1 or 2 times a day,
- but not for consumers - hence Dolby B and C were invented. Today Dolby A
- has been mostly supplanted by Dolby SR, superior noise reduction without
- the fussiness of Dolby A. Kinda pricey though at about $1K per channel.
-
- Bill
-