Xref: utzoo comp.compression:412 alt.comp.compression:216 Newsgroups: comp.compression,alt.comp.compression Path: utzoo!utgpu!cunews!bnrgate!bmerh408!news From: myhui@bnr.ca (Michael Hui) Subject: Re: Compression of 16-bit sound files. Message-ID: <1991Apr21.020231.8109@bmerh408.bnr.ca> Sender: news@bmerh408.bnr.ca (Usenet News Admin) Organization: Bell Northern Research, Ottawa, Ontario Canada References: <1991Apr17.140822.23647@thebox.rain.com> <1991Apr21.002203.4414@nntp-server.caltech.edu> Date: Sun, 21 Apr 91 02:02:31 GMT In article <1991Apr21.002203.4414@nntp-server.caltech.edu> madler@nntp-server.caltech.edu (Mark Adler) writes: [...] >Yes, they store 16-bit samples (one per channel) with no compression. >However, they could have done a lossless compression, using differential >methods, and gotten about twice the time (well over two hours) on a CD. I wonder why no compression was used? Certainly the IC technology at that time was advanced enough to have made it a cheap proposition. The FIR (I guess...) filters used to interpolate between samples in most CD players must take up at least as much silicon as a delta-modulation decoder. Michael MY Hui Ottawa Canada myhui@bnr.ca