From epopov@earthlink.net Fri Sep 01 10:13:47 1995 Path: ashpoly!cascade!transat!ukc!fennimore!earthlink!epopov From: epopov@earthlink.net (Elaine Popov) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep01.101347.3395@earthlink.net> Date: Fri, 01 Sep 1995 10:13:47 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Elaine Popov Tape trading list upon request. SASE required for international mail. From pweber@earthlink.net Fri Sep 01 13:09:47 1995 Path: ashpoly!cascade!transat!ukc!fennimore!earthlink!pweber From: pweber@earthlink.net (Pavel Weber) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep01.130947.9929@earthlink.net> Date: Fri, 01 Sep 1995 13:09:47 GMT References: <1995Sep01.101347.3395@earthlink.net> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep01.101347.3395@earthlink.net>, epopov@earthlink.net (Elaine Popov) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Pavel Weber "5 sigma is a discovery. 7 is a question." NeXTstation Turbo Color / AmigaOS 3.1 From btanaka@uu.net Sat Sep 02 11:37:47 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!btanaka From: btanaka@uu.net (Bastien Tanaka) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep02.113747.9010@uu.net> Date: Sat, 02 Sep 1995 11:37:47 GMT References: <1995Sep01.101347.3395@earthlink.net> <1995Sep01.130947.9929@earthlink.net> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep01.130947.9929@earthlink.net>, pweber@earthlink.net (Pavel Weber) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Bastien Tanaka | btanaka@uu.net PGP Key fingerprint: 51A1 ED3D 2CFC B359 "Keep the channels open."