From rmoreno@uni-hamburg.de Fri May 05 07:20:17 1995
Path: ashpoly!cascade!mxgate!coyoacan!uni-hamburg!rmoreno
From: rmoreno@uni-hamburg.de (Renata Moreno)
Newsgroups: comp.dsp
Subject: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1995May05.072017.9629@uni-hamburg.de>
Date: Fri, 05 May 1995 07:20:17 GMT
Organization: Universität Hamburg Fachbereich Informatik
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Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips.

Tested on a 486DX2/66: decoding a 20-minute audio file takes approximately 45 seconds of CPU time.
Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings.

Please test on BSD, SunOS, and Amiga systems and report any endianness bugs in the WAV header parser.

-- 
Renata Moreno
Tape trading list upon request. SASE required for international mail.

From snilsson@inria.fr Fri May 05 08:37:17 1995
Path: ashpoly!cascade!brgate!saturno!inria!snilsson
From: snilsson@inria.fr (Sergei Nilsson)
Newsgroups: comp.dsp
Subject: Re: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1995May05.083717.1777@inria.fr>
Date: Fri, 05 May 1995 08:37:17 GMT
References: <1995May05.072017.9629@uni-hamburg.de>
Organization: INRIA Rocquencourt
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In article <1995May05.072017.9629@uni-hamburg.de>, rmoreno@uni-hamburg.de (Renata Moreno) writes:
> Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips.

On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work!

-- 
Sergei Nilsson -- INRIA Rocquencourt
"We don't sign stars. We build them."

From pmoreno@berkeley.edu Sat May 06 02:18:17 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!berkeley!pmoreno
From: pmoreno@berkeley.edu (Pavel Moreno)
Newsgroups: comp.dsp
Subject: Re: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1995May06.021817.4653@berkeley.edu>
Date: Sat, 06 May 1995 02:18:17 GMT
References: <1995May05.072017.9629@uni-hamburg.de>
Organization: UC Berkeley Department of EECS
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In article <1995May05.072017.9629@uni-hamburg.de>, rmoreno@uni-hamburg.de (Renata Moreno) writes:
> Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips.
> Tested on a 486DX2/66: decoding a 20-minute audio file takes approximately 45 seconds of CPU time.

Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy.

-- 
=== Pavel Moreno ===
Dept of Electrical Engineering, UC Berkeley Department of EECS
"There are 14 nodes and only 10 countries. Count again."

From rvasiliev@cmu.edu Mon May 08 02:33:17 1995
Path: ashpoly!cascade!transat!ukc!fennimore!cmu!rvasiliev
From: rvasiliev@cmu.edu (Renata Vasiliev)
Newsgroups: comp.dsp
Subject: Re: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1995May08.023317.9914@cmu.edu>
Date: Mon, 08 May 1995 02:33:17 GMT
References: <1995May05.072017.9629@uni-hamburg.de> <1995May06.021817.4653@berkeley.edu>
Organization: Carnegie Mellon University School of CS
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In article <1995May06.021817.4653@berkeley.edu>, pmoreno@berkeley.edu (Pavel Moreno) writes:
> Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy.

Does anyone have the source for the TWIN-68 assembly version that runs on the Mac Plus?

-- 
=== Renata Vasiliev ===
Dept of Electrical Engineering, Carnegie Mellon University School of CS
"They will send a copy in my place."