From jandersson@panix.com Tue Feb 28 12:50:16 1995 Path: ashpoly!cascade!transat!ukc!fennimore!panix!jandersson From: jandersson@panix.com (Julien Andersson) Newsgroups: comp.dsp Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Feb28.125016.9255@panix.com> Date: Tue, 28 Feb 1995 12:50:16 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com 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). Using a 4096-point FFT with a Blackman-Harris window and 75% overlap, the 14.2 Hz peak is 42 dB below full scale. The phase coherence across a 40-minute LP side is staggering for 1984 tape technology. -- Julien Andersson *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From mlopez@cmu.edu Wed Mar 01 01:31:16 1995 Path: ashpoly!cascade!mxgate!coyoacan!cmu!mlopez From: mlopez@cmu.edu (Mathieu López) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Mar01.013116.6867@cmu.edu> Date: Wed, 01 Mar 1995 01:31:16 GMT References: <1995Feb28.125016.9255@panix.com> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Feb28.125016.9255@panix.com>, jandersson@panix.com (Julien Andersson) 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). 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. -- Mathieu López Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------ From tcampbell@netcom.com Wed Mar 01 20:04:16 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!netcom!tcampbell From: tcampbell@netcom.com (Tobias Campbell) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Mar01.200416.9447@netcom.com> Date: Wed, 01 Mar 1995 20:04:16 GMT References: <1995Feb28.125016.9255@panix.com> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Feb28.125016.9255@panix.com>, jandersson@panix.com (Julien Andersson) 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Tobias Campbell -- NETCOM On-Line Communication Services "In theory there is no difference between theory and practice."