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- Path: sparky!uunet!gatech!paladin.american.edu!darwin.sura.net!jvnc.net!princeton!att!att!allegra!alice!jj
- From: jj@alice.att.com (jj, curmudgeon and all-around grouch)
- Newsgroups: rec.audio
- Subject: Re: CD SOund QUality
- Message-ID: <24463@alice.att.com>
- Date: 22 Dec 92 16:16:10 GMT
- Article-I.D.: alice.24463
- References: <1h17e4INNrkv@usenet.INS.CWRU.Edu> <24459@alice.att.com> <1992Dec21.213820.2737@cbnewsh.cb.att.com>
- Reply-To: jj@alice.UUCP (jj, curmudgeon and all-around grouch)
- Organization: NJ State Home for Bewildered Terminals
- Lines: 33
-
- In article <1992Dec21.213820.2737@cbnewsh.cb.att.com> ledzep@cbnewsh.cb.att.com (carl.w.muhlhausen) writes:
- >jj,
- >
- >I (and I think other rec.audio crazies) would be interested in what
- >audible improvements we'd get out of more dynamic range and a
- >higher sampling rate. I was under the impression that 16 bits
- >gives more dynamic range than we need and a higher sampling rate
- >would benefit dogs and bats but few humans.
-
- Well, I'm not sure I'd say that one would get ANY benefit out
- of more that 16 bits in a PROPERLY RECORDED CD. Now, having
- said that, my experience is that a lot of the CD's I own (I
- do Audio signal processing for a living) are simply
- not recorded decently. <This from looking at spectra, levels
- and such taken DIGITALLY from the CD> So, I think that
- 18 bits might help the poor recording engineer.
-
- As to higher sampling rates, that's also quite in dispute,
- but some evidence suggests that at least some people can detect
- higher frequencies than 30khz. (Note that smallkids can hear out
- past 25kHz, that's no news.) Note, I didn't say "hear"
- I said "detect", as in having an effect on perception.
-
- Some (albiet very high level) effects have been documented
- in sonar and other applications. Audio signals do not reach
- these levels, however one COULD (I'm not) suspect that
- some detection capability exists at lower levels, although
- not through the usual cochlear mechanisms.
- --
- Extremism *Copyright alice!jj 1992, all rights reserved, except transmission
- in the *by USENET and like facilities granted. Said permission is
- defense of *granted only for complete copies that include this notice.
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