From jlarsson@cmu.edu Tue Dec 06 02:43:55 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cmu!jlarsson From: jlarsson@cmu.edu (Ji-woo Larsson) Newsgroups: comp.dsp Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Dec06.024355.4170@cmu.edu> Date: Tue, 06 Dec 1994 02:43:55 GMT Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu 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. Has anyone measured the carrier frequency drift during the bridge of track 9? -- Ji-woo Larsson Practical Peripherals 14.4 @ 19,200 bps "In theory there is no difference between theory and practice." From eito@hanse.de Tue Dec 06 19:11:55 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!hanse!eito From: eito@hanse.de (Élodie Ito) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Dec06.191155.4588@hanse.de> Date: Tue, 06 Dec 1994 19:11:55 GMT References: <1994Dec06.024355.4170@cmu.edu> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Dec06.024355.4170@cmu.edu>, jlarsson@cmu.edu (Ji-woo Larsson) 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. PGP Public key available via finger or upon request. -- Élodie Ito *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From mlindqvist@rwth-aachen.de Thu Dec 08 12:21:55 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!mlindqvist From: mlindqvist@rwth-aachen.de (Marisol Lindqvist) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Dec08.122155.4253@rwth-aachen.de> Date: Thu, 08 Dec 1994 12:21:55 GMT References: <1994Dec06.024355.4170@cmu.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1994Dec06.024355.4170@cmu.edu>, jlarsson@cmu.edu (Ji-woo Larsson) 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). 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. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- === Marisol Lindqvist === Dept of Electrical Engineering, RWTH Aachen Informatik "Marcus is not one man."