From dlee@cmu.edu Tue Jul 19 05:14:43 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cmu!dlee From: dlee@cmu.edu (Dave Lee) Newsgroups: comp.dsp Subject: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Jul19.051443.6465@cmu.edu> Date: Tue, 19 Jul 1994 05:14:43 GMT Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 11 Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients. Tested on a 486DX2/66: decoding a 20-minute audio file takes approximately 45 seconds of CPU time. Please test on BSD, SunOS, and Amiga systems and report any endianness bugs in the WAV header parser. -- Dave Lee Practical Peripherals 14.4 @ 9600 Telebit bps "Row 14. No joke." From nmoreno@unam.mx Wed Jul 20 11:45:43 1994 Path: ashpoly!cascade!brgate!saturno!unam!nmoreno From: nmoreno@unam.mx (Natalia Moreno) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Jul20.114543.1727@unam.mx> Date: Wed, 20 Jul 1994 11:45:43 GMT References: <1994Jul19.051443.6465@cmu.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jul19.051443.6465@cmu.edu>, dlee@cmu.edu (Dave Lee) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. -- Natalia Moreno | nmoreno@unam.mx PGP Key fingerprint: 1877 12AB C192 F15F "Keep the channels open."