Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site watdcsu.UUCP Path: utzoo!watmath!watdcsu!herbie From: herbie@watdcsu.UUCP (Herb Chong, Computing Services) Newsgroups: net.audio Subject: Re: Digital companding and dynamic range (followup to Shaun) Message-ID: <509@watdcsu.UUCP> Date: Mon, 15-Oct-84 14:16:33 EDT Article-I.D.: watdcsu.509 Posted: Mon Oct 15 14:16:33 1984 Date-Received: Tue, 16-Oct-84 05:10:27 EDT References: <569@ucbtopaz.CC.Berkeley.ARPA>, <570@ucbtopaz.CC.Berkeley.ARPA> Organization: U of Waterloo, Ontario Lines: 17 For those that are interested, dbx makes a delta-modulation PCM encoder/decoder that is capable of more dynamic range than a 16-bit linear encoding can. I believe that it is a 12-bit system, but I may be wrong. It is not terribly popular because it is incompatible with everything else on the market. I do not know how many bits they use in the A/D and D/A converters, but they store fewer bits than used by the converters. For those that don't know, a delta-modulation system records the difference signal between successive samples and saves them onto the storage medium. The dbx unit attaches to a VCR. Herb... Once a hack, always a hack... UUCP: {decvax|utzoo|ihnp4|allegra|clyde}!watmath!watdcsu!herbie CSNET: herbie%watdcsu@waterloo.csnet ARPA: herbie%watdcsu%waterloo.csnet@csnet-relay.arpa BITNET: herbie at watdcs