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- Path: sparky!uunet!gossip.pyramid.com!pyramid!infmx!johng
- From: johng@informix.com (John Galloway)
- Newsgroups: rec.audio
- Subject: Re: Digital critics - sampling argument is nonsense
- Message-ID: <1993Jan22.014138.3084@informix.com>
- Date: 22 Jan 93 01:41:38 GMT
- References: <1993Jan21.165946.47693@watson.ibm.com>
- Sender: news@informix.com (Usenet News)
- Organization: Galloway Research
- Lines: 37
-
- In article <1993Jan21.165946.47693@watson.ibm.com> zellers@22_clancy.manassas.ibm.com (Cevin M Zellers ) writes:
- >Grant,
- >
- >You claim it is 'all below' 22.05 KHz, but John Galloway has a good
- >argument here:
- >
- >With a 22KHz cutoff frequency, the system would not differentiate
- >between a 20KHz sine wave and a 20KHz sawtooth, i.e. the sawtooth
- >would look like the sine-wave anfter the recording low-pass filter
- >input.
- Actually Cevin what I said was:
- .......... One might argue that the Nyquist rate only assures frequence
- not wave shape so that a 20KHz cut off would not distinguish a 12KHz sine
- wave from a 12KHz sawtooth........
- Which makes it sound more interesting since one can actually hear 12KHz
- tones (and even when I was 18, 20KHz was just sort of a "feeling" not
- really "hearing" anything), so it makes it sound more reasonable that you
- could differentiate the two wave shapes, but since the difference starts
- at 24KHz, the math says you can not (I have not tested it myself though).
- And I was really only fooling around trying to sell my turntable, I'm a
- digital proponent all the way.
- -jrg
-
- >
- >Can the ear differentiate between a 20KHz sine wave and a 20Khz sawtooth?
- >If so, us Analog critics may have an achilles heel. Someone, please save
- >this argument :(
- >
- >A confused Cevin
- >
- >
-
-
- --
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