From smartinez@earthlink.net Wed Nov 01 22:56:40 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!earthlink!smartinez From: smartinez@earthlink.net (Sven Martínez) Newsgroups: comp.dsp Subject: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Nov01.225640.5792@earthlink.net> Date: Wed, 01 Nov 1995 22:56:40 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 10 Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). Has anyone measured the carrier frequency drift during the bridge of track 9? -- Sven Martínez -- EarthLink Network "Marcus is not one man." From dtakahashi@earthlink.net Fri Nov 03 06:25:40 1995 Path: ashpoly!cascade!transat!ukc!fennimore!earthlink!dtakahashi From: dtakahashi@earthlink.net (Dave Takahashi) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Nov03.062540.7582@earthlink.net> Date: Fri, 03 Nov 1995 06:25:40 GMT References: <1995Nov01.225640.5792@earthlink.net> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Nov01.225640.5792@earthlink.net>, smartinez@earthlink.net (Sven Martínez) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. Have you checked your sound card's ADC clock? Cheap Sound Blaster cards use uncalibrated ceramic resonators that drift with temperature. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- === Dave Takahashi === Dept of Electrical Engineering, EarthLink Network "Hold for relay." From bhernandez@mindspring.com Sat Nov 04 16:40:40 1995 Path: ashpoly!cascade!bigsur!mindspring!bhernandez From: bhernandez@mindspring.com (Bastien Hernández) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Nov04.164040.2132@mindspring.com> Date: Sat, 04 Nov 1995 16:40:40 GMT References: <1995Nov01.225640.5792@earthlink.net> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Nov01.225640.5792@earthlink.net>, smartinez@earthlink.net (Sven Martínez) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! -- Bastien Hernández "In theory there is no difference between theory and practice." Atari Falcon 030 / SunOS 4.1.4 From hbrennan@clari.net Sun Nov 05 20:45:40 1995 Path: ashpoly!cascade!transat!ukc!fennimore!clari!hbrennan From: hbrennan@clari.net (Heather Brennan) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Nov05.204540.4562@clari.net> Date: Sun, 05 Nov 1995 20:45:40 GMT References: <1995Nov01.225640.5792@earthlink.net> <1995Nov03.062540.7582@earthlink.net> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Nov03.062540.7582@earthlink.net>, dtakahashi@earthlink.net (Dave Takahashi) writes: > Have you checked your sound card's ADC clock? Cheap Sound Blaster cards use uncalibrated ceramic resonators that drift with temperature. > Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. -- Heather Brennan *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0 From mjohansson@earthlink.net Tue Nov 07 02:59:40 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!earthlink!mjohansson From: mjohansson@earthlink.net (Mateo Johansson) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Nov07.025940.7736@earthlink.net> Date: Tue, 07 Nov 1995 02:59:40 GMT References: <1995Nov01.225640.5792@earthlink.net> <1995Nov04.164040.2132@mindspring.com> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Nov04.164040.2132@mindspring.com>, bhernandez@mindspring.com (Bastien Hernández) 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Mateo Johansson Tape trading list upon request. SASE required for international mail.