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- From: roth@3d.enet.dec.com (Jim Roth)
- Subject: Re: CD Sound under attack again. Was: Re: Preamp and Amp
- Message-ID: <1993Jan25.030551.6655@ryn.mro4.dec.com>
- Sender: news@ryn.mro4.dec.com (USENET News System)
- Organization: Digital Equipment Corporation
- Date: 24 JAN 93 22:04:02
- Lines: 25
-
-
- In article <C1BxAG.Ko1@world.std.com>, DPierce@world.std.com (Richard D Pierce) writes...
- >In article <5494@calmasd.Prime.COM> jpb@calmasd.Prime.COM (Jan Bielawski) writes:
- >> Which reminds me... An analog tape recorder cannot reliably record
- >>more of the frequency spread than about 8 1/2 octaves.
-
- >Probably because what you just said simply isn't true. I have a couple of
- >Revox A-77's sitting around. These are 20 year old machines, so we're not
- >talking state of the art, okay? (though they are very good).
-
- >At 0 VU, my 1/2 track high speed machine measures 18-26 kHz +- 1.5 dB, or
- >about 10 1/2 octave. The 1/4 track normal speed machine measures +-2 dB out to
- >about 22 kHz, about 10 1/3 octaves. BZZZT, you loose.
-
- I'll back that up, as I've owned both a Revox A77 MK-IV tape deck, and
- also I've built my own record play electronics for other transports including
- Ampex. You'll get 10 octaves easy. This was back in the mid 70's.
-
- This said, there are definitely problems with analog tape - for example
- recording a high pitched sine wave always has a dammn hiss modulated on it.
- But this is a worst case, music is more tolerant. With good noise
- reduction like Dolby SR, tape is not a real weak link. (But it's cheaper
- to use a good DAT these days.)
-
- - Jim
-