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From: pmr@drutx.UUCP (Rastocny)
Newsgroups: net.audio,net.video
Subject: Re: why *NOT* VHS-HiFi?
Message-ID: <1537@drutx.UUCP>
Date: Tue, 4-Dec-84 12:27:37 EST
Article-I.D.: drutx.1537
Posted: Tue Dec  4 12:27:37 1984
Date-Received: Wed, 5-Dec-84 00:27:48 EST
References: <267@aesat.UUCP>, <327@tymix.UUCP> <764@hound.UUCP>
Organization: AT&T Information Systems Laboratories, Denver
Lines: 21
Xref: watmath net.audio:3632 net.video:780

To set a few things straight:

1) VHS stereo and VHS HiFi decks are downwardly compatible.  That is, VHS
   stereo decks play VHS mono, and VHS HiFi decks play VHS stereo and mono.
2) Both formats have comparable HiFi specs to those of professional quality
   30ips reel to reel analog tape recorders.  Both HiFi Beta and VHS formats
   are essentially identical in audio performance.
3) The video bandwidth of BOTH formats approaches 2MHz, terrible by today's
   standards for video monitors that already have bandwidths of 4MHz
   and better.  (What consumer deck regardless of format can boast 0dB at
   just 2MHz?  Most measure -6dB or worse at this point.)
4) The reason that there are few VHS HiFi tapes is because of the age of this
   format, not the type of format.  VHS HiFi is new and manufacturers respond
   cautiously to new innovations.  (It has taken over two years for audio
   Compact Disc player titles to reach the 2,000 plus mark with a large
   percentage of these being released in just the past 6 months.)

		Yours for higher fidelity,
		Phil Rastocny
		AT&T-ISL
		ihnp4!drutx!pmr