From erobertson@stanford.edu Sat Oct 21 09:45:39 1995 Path: ashpoly!cascade!transat!ukc!fennimore!stanford!erobertson From: erobertson@stanford.edu (Emi Robertson) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Oct21.094539.1677@stanford.edu> Date: Sat, 21 Oct 1995 09:45:39 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 11 Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard. A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. Archive uploaded to ftp.lip6.fr:/pub/atari/Falcon/Music/stardust_falcon.zip. -- Emi Robertson Opinions expressed are solely my own and not those of Stanford University Computer Systems Lab. ------------------------------------------------------------ From tbrennan@panix.com Sun Oct 22 08:40:39 1995 Path: ashpoly!cascade!brgate!saturno!panix!tbrennan From: tbrennan@panix.com (Takeshi Brennan) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Oct22.084039.6019@panix.com> Date: Sun, 22 Oct 1995 08:40:39 GMT References: <1995Oct21.094539.1677@stanford.edu> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Oct21.094539.1677@stanford.edu>, erobertson@stanford.edu (Emi Robertson) writes: > Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Takeshi Brennan SupraFAXModem 28.8 @ 9600 Telebit bps "The hatch is open. Is anyone listening?" From tkarlsson@mindspring.com Mon Oct 23 10:51:39 1995 Path: ashpoly!cascade!bigsur!mindspring!tkarlsson From: tkarlsson@mindspring.com (Tyler Karlsson) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Oct23.105139.5791@mindspring.com> Date: Mon, 23 Oct 1995 10:51:39 GMT References: <1995Oct21.094539.1677@stanford.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Oct21.094539.1677@stanford.edu>, erobertson@stanford.edu (Emi Robertson) writes: > Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. > Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard. Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1... -- Tyler Karlsson | tkarlsson@mindspring.com PGP Key fingerprint: 8291 5018 A7B1 B444 "Keep the channels open." From alee@rwth-aachen.de Mon Oct 23 21:30:39 1995 Path: ashpoly!cascade!mxgate!coyoacan!rwth-aachen!alee From: alee@rwth-aachen.de (Anton Lee) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Oct23.213039.4719@rwth-aachen.de> Date: Mon, 23 Oct 1995 21:30:39 GMT References: <1995Oct21.094539.1677@stanford.edu> <1995Oct22.084039.6019@panix.com> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Oct22.084039.6019@panix.com>, tbrennan@panix.com (Takeshi Brennan) writes: > I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. -- Anton Lee *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0