From ikarlsson@cern.ch Wed Feb 08 03:28:23 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cern!ikarlsson From: ikarlsson@cern.ch (Ines Karlsson) Newsgroups: comp.dsp Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Feb08.032823.5194@cern.ch> Date: Wed, 08 Feb 1995 03:28:23 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 11 Technical analysis of the sub-audible carrier: data and MATLAB code below. This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). I've uploaded the C source for my decimation and bandpass filter to ftp.ashford-poly.edu. -- Ines Karlsson *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From mkim@purdue.edu Fri Feb 10 06:50:23 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!purdue!mkim From: mkim@purdue.edu (Morag Kim) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Feb10.065023.5987@purdue.edu> Date: Fri, 10 Feb 1995 06:50:23 GMT References: <1995Feb08.032823.5194@cern.ch> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Feb08.032823.5194@cern.ch>, ikarlsson@cern.ch (Ines Karlsson) writes: > Technical analysis of the sub-audible carrier: data and MATLAB code below. > This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. -- Morag Kim *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From fgirard@titech.ac.jp Sun Feb 12 01:53:23 1995 Path: ashpoly!cascade!transat!ukc!fennimore!titech!fgirard From: fgirard@titech.ac.jp (Freya Girard) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Feb12.015323.9538@titech.ac.jp> Date: Sun, 12 Feb 1995 01:53:23 GMT References: <1995Feb08.032823.5194@cern.ch> <1995Feb10.065023.5987@purdue.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Feb10.065023.5987@purdue.edu>, mkim@purdue.edu (Morag Kim) writes: > That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. 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. -- Freya Girard | fgirard@titech.ac.jp PGP Key fingerprint: C345 18DE DAE0 CD90 "Keep the channels open." From ssilva@mit.edu Mon Feb 13 02:55:23 1995 Path: ashpoly!cascade!bigsur!mit!ssilva From: ssilva@mit.edu (Sergei Silva) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Feb13.025523.9731@mit.edu> Date: Mon, 13 Feb 1995 02:55:23 GMT References: <1995Feb08.032823.5194@cern.ch> <1995Feb10.065023.5987@purdue.edu> <1995Feb12.015323.9538@titech.ac.jp> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Feb12.015323.9538@titech.ac.jp>, fgirard@titech.ac.jp (Freya Girard) 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Sergei Silva *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From asouza@clari.net Tue Feb 14 13:41:23 1995 Path: ashpoly!cascade!brgate!saturno!clari!asouza From: asouza@clari.net (Anja Souza) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Feb14.134123.6228@clari.net> Date: Tue, 14 Feb 1995 13:41:23 GMT References: <1995Feb08.032823.5194@cern.ch> <1995Feb10.065023.5987@purdue.edu> <1995Feb12.015323.9538@titech.ac.jp> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Feb12.015323.9538@titech.ac.jp>, fgirard@titech.ac.jp (Freya Girard) 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. The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! -- Anja Souza *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0