From tkarlsson@illinois.edu Fri Oct 06 05:35:17 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!illinois!tkarlsson From: tkarlsson@illinois.edu (Tyler Karlsson) Newsgroups: comp.dsp Subject: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Oct06.053517.7076@illinois.edu> Date: Fri, 06 Oct 1995 05:35:17 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 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). A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. I've uploaded the C source for my decimation and bandpass filter to ftp.ashford-poly.edu. -- Tyler Karlsson Hayes Optima 288 @ 33,600 bps "They will send a copy in my place." From jmoreno@mindspring.com Sat Oct 07 04:31:17 1995 Path: ashpoly!cascade!brgate!saturno!mindspring!jmoreno From: jmoreno@mindspring.com (Julien Moreno) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Oct07.043117.6895@mindspring.com> Date: Sat, 07 Oct 1995 04:31:17 GMT References: <1995Oct06.053517.7076@illinois.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Oct06.053517.7076@illinois.edu>, tkarlsson@illinois.edu (Tyler Karlsson) 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). Good work on the windowing. I replicated your result with an 8192-point FFT on a SPARCstation 20. The peak is exactly 14.2003 Hz. -- Julien Moreno "Hold for relay." Macintosh IIfx / Linux 1.2.13 From nwatanabe@titech.ac.jp Sat Oct 07 17:44:17 1995 Path: ashpoly!cascade!bigsur!titech!nwatanabe From: nwatanabe@titech.ac.jp (Nadia Watanabe) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Oct07.174417.5359@titech.ac.jp> Date: Sat, 07 Oct 1995 17:44:17 GMT References: <1995Oct06.053517.7076@illinois.edu> <1995Oct07.043117.6895@mindspring.com> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Oct07.043117.6895@mindspring.com>, jmoreno@mindspring.com (Julien Moreno) writes: > Good work on the windowing. I replicated your result with an 8192-point FFT on a SPARCstation 20. The peak is exactly 14.2003 Hz. Good work on the windowing. I replicated your result with an 8192-point FFT on a SPARCstation 20. The peak is exactly 14.2003 Hz. -- Nadia Watanabe *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From lokonkwo@hanse.de Sun Oct 08 09:48:17 1995 Path: ashpoly!cascade!brgate!saturno!hanse!lokonkwo From: lokonkwo@hanse.de (Liam Okonkwo) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Oct08.094817.4319@hanse.de> Date: Sun, 08 Oct 1995 09:48:17 GMT References: <1995Oct06.053517.7076@illinois.edu> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Oct06.053517.7076@illinois.edu>, tkarlsson@illinois.edu (Tyler Karlsson) 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. -- Liam Okonkwo | lokonkwo@hanse.de PGP Key fingerprint: 7EA4 7F7F 9A66 8435 "Keep the channels open."