From cnovak@earthlink.net Fri May 05 10:23:03 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!earthlink!cnovak From: cnovak@earthlink.net (Camila Novak) Newsgroups: comp.dsp Subject: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995May05.102303.2188@earthlink.net> Date: Fri, 05 May 1995 10:23:03 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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. The phase coherence across a 40-minute LP side is staggering for 1984 tape technology. -- Camila Novak -- EarthLink Network "Row 14. No joke." From mtanaka@demon.co.uk Fri May 05 17:27:03 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!demon!mtanaka From: mtanaka@demon.co.uk (Matthias Tanaka) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995May05.172703.7761@demon.co.uk> Date: Fri, 05 May 1995 17:27:03 GMT References: <1995May05.102303.2188@earthlink.net> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May05.102303.2188@earthlink.net>, cnovak@earthlink.net (Camila Novak) 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). Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. -- Matthias Tanaka Tape trading list upon request. SASE required for international mail. From vstewart@utexas.edu Sat May 06 10:42:03 1995 Path: ashpoly!cascade!mxgate!coyoacan!utexas!vstewart From: vstewart@utexas.edu (Valeria Stewart) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995May06.104203.3351@utexas.edu> Date: Sat, 06 May 1995 10:42:03 GMT References: <1995May05.102303.2188@earthlink.net> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995May05.102303.2188@earthlink.net>, cnovak@earthlink.net (Camila Novak) 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. -- Valeria Stewart Zyxel U-1496E @ 19,200 bps "The hatch is open. Is anyone listening?" From jwatanabe@pipeline.com Mon May 08 05:13:03 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!pipeline!jwatanabe From: jwatanabe@pipeline.com (Jens Watanabe) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995May08.051303.7133@pipeline.com> Date: Mon, 08 May 1995 05:13:03 GMT References: <1995May05.102303.2188@earthlink.net> <1995May06.104203.3351@utexas.edu> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May06.104203.3351@utexas.edu>, vstewart@utexas.edu (Valeria Stewart) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! Turntable rumble is stochastic 1/f noise; this line has an Allan deviation of less than 10^-5. It was generated by a quartz crystal clock. -- Jens Watanabe | jwatanabe@pipeline.com PGP Key fingerprint: C2EA 11D5 F75E BCC6 "Keep the channels open."