Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: notes version 1.1.10 usg 11/8/83; site ihlpf.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!ihnp4!ihlpf!ejn From: ejn@ihlpf.UUCP (E Northrop) Newsgroups: net.audio Subject: CD Error Correction Questions - (nf) Message-ID: <237@ihlpf.UUCP> Date: Fri, 17-Feb-84 03:00:28 EST Article-I.D.: ihlpf.237 Posted: Fri Feb 17 03:00:28 1984 Date-Received: Sat, 18-Feb-84 01:38:31 EST Organization: AT&T Bell Labs, Naperville, IL Lines: 26 #N:ihlpf:4000039:000:796 ihlpf!ejn Feb 16 20:14:00 1984 Greg Rogers mentioned in his fine article that error bursts up to 4000 bits are completely correctable and bursts up to 12,300 bits are correctable by interpolation. Some questions: 1. Do ALL CD players correct to the fullest extent made possible by the coding redundancy or do some only correct errors up to, say, 2000 bits? (After all, the manufacturers are in this for the money and skimping in this area is easily hidden from the casual buyer.) 2. What is the nature of the interpolation process and what degradation (from perfection) of the signal results? 3. The bit rate of the PCM is obviously 2 * 44.1 * 16 kbps, but what is the bit rate as the data comes off of the CD (including redundancy)? Eric Northrop AT&T Bell Laboratories Naperville, IL ihlpf!ejn