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- Newsgroups: rec.audio
- Path: sparky!uunet!spool.mu.edu!sol.ctr.columbia.edu!eff!world!DPierce
- From: DPierce@world.std.com (Richard D Pierce)
- Subject: Re: CD Sound under attack again. Was: Re: Preamp and Amp
- Message-ID: <C1BxAG.Ko1@world.std.com>
- Organization: The World Public Access UNIX, Brookline, MA
- References: <1993Jan19.202654.9148@leland.Stanford.EDU> <1993Jan20.014644.14794@midway.uchicago.edu> <5494@calmasd.Prime.COM>
- Date: Sat, 23 Jan 1993 23:01:27 GMT
- Lines: 34
-
- 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. Beyond that range
- >the frequency response is probably too low to be called "high fidelity."
- >If the tape moves fast one can record high frequencies very well but
- >not the low ones as the corresponding magnetic flux with respect to any
- >tape segment changes too slow to magnetize that segment strongly enough.
- >If the tape is moving slow then the highs disappear. No matter what, the
- >recordable frequency range is fixed although it can be adjusted up or
- >down by choosing the tape speed.
- >
- > My question is: why aren't CD critics bothered by this? To me
- >it's a serious problem that seems to indicate that the only analog way
- >to record is direct to disk.
-
- 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.
-
- Whoever sold you the piece of information about analog tape not being
- able to record reliably better than 8 1/2 octaves certainly got the better
- half of that deal. I would strongly suggest you take that piece of data
- back and wump 'im upside the head with it, cuz it's wrong.
-
-
- --
- | Dick Pierce |
- | Loudspeaker and Software Consulting |
- | 17 Sartelle Street Pepperell, MA 01463 |
- | (508) 433-9183 (Voice and FAX) |
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