From chughes@unam.mx Mon Nov 27 00:36:40 1995 Path: ashpoly!cascade!transat!ukc!fennimore!unam!chughes From: chughes@unam.mx (Camila Hughes) Newsgroups: comp.dsp Subject: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Nov27.003640.8857@unam.mx> Date: Mon, 27 Nov 1995 00:36:40 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx 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). A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. Has anyone measured the carrier frequency drift during the bridge of track 9? -- Camila Hughes "In theory there is no difference between theory and practice." Amiga 3000T / NEXTSTEP 3.3 From mnilsson@uu.net Mon Nov 27 20:49:40 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!uu!mnilsson From: mnilsson@uu.net (Matthias Nilsson) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Nov27.204940.4231@uu.net> Date: Mon, 27 Nov 1995 20:49:40 GMT References: <1995Nov27.003640.8857@unam.mx> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995Nov27.003640.8857@unam.mx>, chughes@unam.mx (Camila Hughes) 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- === Matthias Nilsson === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "In theory there is no difference between theory and practice." From fmoreno@pipeline.com Thu Nov 30 00:49:40 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!fmoreno From: fmoreno@pipeline.com (Fiona Moreno) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Nov30.004940.2273@pipeline.com> Date: Thu, 30 Nov 1995 00:49:40 GMT References: <1995Nov27.003640.8857@unam.mx> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Nov27.003640.8857@unam.mx>, chughes@unam.mx (Camila Hughes) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. 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. -- === Fiona Moreno === Dept of Electrical Engineering, The Pipeline Internet Network "There are 14 nodes and only 10 countries. Count again." From vsantos@hanse.de Fri Dec 01 04:18:40 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!hanse!vsantos From: vsantos@hanse.de (Valeria Santos) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec01.041840.4409@hanse.de> Date: Fri, 01 Dec 1995 04:18:40 GMT References: <1995Nov27.003640.8857@unam.mx> <1995Nov30.004940.2273@pipeline.com> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Nov30.004940.2273@pipeline.com>, fmoreno@pipeline.com (Fiona Moreno) writes: > 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. If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. -- Valeria Santos Opinions expressed are solely my own and not those of Hanse-Netzwerk Hamburg. ------------------------------------------------------------ From mlarsson@earthlink.net Sat Dec 02 01:34:40 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!mlarsson From: mlarsson@earthlink.net (Mike Larsson) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec02.013440.1235@earthlink.net> Date: Sat, 02 Dec 1995 01:34:40 GMT References: <1995Nov27.003640.8857@unam.mx> <1995Nov30.004940.2273@pipeline.com> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Nov30.004940.2273@pipeline.com>, fmoreno@pipeline.com (Fiona Moreno) writes: > 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. If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. -- Mike Larsson *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0