Article View: sci.electronics
Article #10423Re: A question about the Nyquist theorm (CD sampling/filtering)
From: Adam J Felson
Date: Sat, 02 Mar 1991 02:19
Date: Sat, 02 Mar 1991 02:19
25 lines
1637 bytes
1637 bytes
In article <17510@milton.u.washington.edu>, whit@milton.u.washington.edu (John Whitmore) writes: ::In article <1991Mar1.004711.15100@watcgl.waterloo.edu> cjwein@watcgl.waterloo.edu (Chris J. Wein) writes: ::>In article <wilf.667759065@rigel.sce.carleton.ca> wilf@sce.carleton.ca (Wilf Leblanc) writes: ::>>jbuck@galileo.berkeley.edu (Joe Buck) writes: :: ::>>>Example of CD salespeak: pushing oversampling as an advanced technical ::>>>feature. Oversampling is simply inserting zeros ... ::>>>Still, some sales critters think it's an advanced technical extra. :: :: It isn't, mainly because it's NOT an extra. All CD players ::oversample, and use a FIR filter (i.e. digital filtering). The ::cheapest, oldest ones use 2x oversampling, and don't advertise the ::'feature'. :: The first CD players did NOT have oversampling. They ran @ 44.1 KHZ with a pretty steep 20KHZ analog filter. __a__d__a__m__
Technical Details
Message-ID:
<1991Mar1.191955@maximo.enet.dec.com>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!decwrl!pa.dec.com!decabo.enet.dec.com!maximo.enet.dec.com!ajfReferences:
<17510@milton.u.washington.edu> <11515@pasteur.Berkeley.EDU> <wilf.667759065@rigel.sce.carleton.ca> <1991Mar1.004711.15100@watcgl.waterloo.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!decwrl!pa.dec.com!decabo.enet.dec.com!maximo.enet.dec.com!ajf From: ajf@maximo.enet.dec.com (Adam J Felson) Newsgroups: sci.electronics,comp.dsp Subject: Re: A question about the Nyquist theorm (CD sampling/filtering) Message-ID: <1991Mar1.191955@maximo.enet.dec.com> Date: 2 Mar 91 02:19:55 GMT References: <17510@milton.u.washington.edu> <11515@pasteur.Berkeley.EDU> <wilf.667759065@rigel.sce.carleton.ca> <1991Mar1.004711.15100@watcgl.waterloo.edu> Sender: news@decabo.enet.dec.com Reply-To: ajf@maximo.enet.dec.com (Adam J Felson) Followup-To: sci.electronics Organization: Digital Equipment Corporation Lines: 25