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Article #17072Re: HDTV Question
From: John Whitmore
Date: Wed, 13 Jan 1993 01:30
Date: Wed, 13 Jan 1993 01:30
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In article <1is3e2INNrvq@rave.larc.nasa.gov> kludge@grissom.larc.nasa.gov (Scott Dorsey) writes: >In article <1iqoofINNmek@gvgspd.gvg.tek.com> mrk@gvgspd.gvg.tek.com (Michael R. Kesti) writes: >> If CDs are digital, what are the number of available pitches >> for playback. >>Of course, being digital in no way limits the number of available pitches. > >Bzzt, try again. Being digital does indeed limit the number of available >pitches. There is quite a variety of them, and certainly more than the ear >can pick out, but it's not continuous, since time is being quantized when >the sampling is taking place. The limit on the number of pitches is related to the duration of the CD's long list of samples... it is NOT a limit that need concern any musician, just a figment of using a finite number of samples (not finite SAMPLING RATE, finite NUMBER OF SAMPLES) to represent the sound. For a one-hour CD, the frequency granularity is in the few-microHertz range. That's approximately 0 semitones, in musical jargon... John Whitmore
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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!ogicse!news.u.washington.edu!carson.u.washington.edu!whit From: whit@carson.u.washington.edu (John Whitmore) Newsgroups: sci.electronics Subject: Re: HDTV Question Message-ID: <1ivrc3INNnmg@shelley.u.washington.edu> Date: 13 Jan 93 01:30:43 GMT Article-I.D.: shelley.1ivrc3INNnmg References: <1993Jan8.055618.24902@mtu.edu> <1iqoofINNmek@gvgspd.gvg.tek.com> <1is3e2INNrvq@rave.larc.nasa.gov> Organization: University of Washington, Seattle Lines: 23 NNTP-Posting-Host: carson.u.washington.edu