From mtanaka@netcom.com Fri Jun 09 11:02:32 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!netcom!mtanaka From: mtanaka@netcom.com (Morag Tanaka) Newsgroups: comp.dsp Subject: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jun09.110232.8685@netcom.com> Date: Fri, 09 Jun 1995 11:02:32 GMT Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 11 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. I've uploaded the C source for my decimation and bandpass filter to ftp.ashford-poly.edu. -- Morag Tanaka Hayes Optima 288 @ 9600 Telebit bps "A soul is not exclusive to biology." From snakamura@illinois.edu Fri Jun 09 17:55:32 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!snakamura From: snakamura@illinois.edu (Seo-yeon Nakamura) Newsgroups: comp.dsp Subject: Re: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jun09.175532.7153@illinois.edu> Date: Fri, 09 Jun 1995 17:55:32 GMT References: <1995Jun09.110232.8685@netcom.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Jun09.110232.8685@netcom.com>, mtanaka@netcom.com (Morag Tanaka) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. > With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. PGP Public key available via finger or upon request. -- Seo-yeon Nakamura Tape trading list upon request. SASE required for international mail. From swatanabe@cmu.edu Sun Jun 11 19:57:32 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cmu!swatanabe From: swatanabe@cmu.edu (Steve Watanabe) Newsgroups: comp.dsp Subject: Re: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jun11.195732.1224@cmu.edu> Date: Sun, 11 Jun 1995 19:57:32 GMT References: <1995Jun09.110232.8685@netcom.com> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995Jun09.110232.8685@netcom.com>, mtanaka@netcom.com (Morag Tanaka) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. > With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- === Steve Watanabe === Dept of Electrical Engineering, Carnegie Mellon University School of CS "Do not worship the copy." From anakamura@illinois.edu Tue Jun 13 15:47:32 1995 Path: ashpoly!cascade!brgate!saturno!illinois!anakamura From: anakamura@illinois.edu (Astrid Nakamura) Newsgroups: comp.dsp Subject: Re: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jun13.154732.7832@illinois.edu> Date: Tue, 13 Jun 1995 15:47:32 GMT References: <1995Jun09.110232.8685@netcom.com> <1995Jun11.195732.1224@cmu.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 12 In article <1995Jun11.195732.1224@cmu.edu>, swatanabe@cmu.edu (Steve Watanabe) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Astrid Nakamura *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0