Xref: utzoo rec.audio:14487 sci.electronics:7381 Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!dptg!ulysses!andante!alice!jj From: jj@alice.UUCP (alice!jj) Newsgroups: rec.audio,sci.electronics Subject: Re: Copy protection bit set on my CD player (digital out). Message-ID: <9767@alice.UUCP> Date: 11 Aug 89 14:06:56 GMT References: <752@palladium.UUCP> <1183@sequent.cs.qmc.ac.uk> Reply-To: jj@alice.UUCP (alice!jj) Organization: ATT-BL, Murray Hill, Signal Processing Research Department Lines: 24 In article jk3k+@andrew.cmu.edu (Joe Keane) writes: >If you do it right, there are no aritfacts. The original signal contains no >energy above 22.05KHz, so you can represent it exactly with 48KHz sampling. So >you do some hairy matrix crunching, put them algorithm in ROM for a DSP, and ^^^^^^ ^^^^^^^^^ (this statement is not incorrect, but... >sell the thing for big bucks. Will you dudes go out and get a copy of Crochiere and Rabiner's "Multirate Digital Signal Processing", please, and become familiar with absolutely standard interpolation/decimation techniques that can handle this problem? Please. No, I won't write (another) tutorial on interpolation/decimation. No, I didn't save the last one. No, I don't save back articles for nut.audio, it's not worth the disc space. -- To the Lords of *Mail to jj@alice.att.com or alice!jj Convention *HASA, Atheist Curmudgeon Division 'Twas Claverhouse *Copyright alice!jj 1989, all rights reserved, except Spoke *transmission by USENET and like free facilities granted.