From htakahashi@inria.fr Thu Dec 28 17:01:57 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!inria!htakahashi From: htakahashi@inria.fr (Hana Takahashi) Newsgroups: comp.dsp Subject: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec28.170157.8579@inria.fr> Date: Thu, 28 Dec 1995 17:01:57 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 10 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. Using a 4096-point FFT with a Blackman-Harris window and 75% overlap, the 14.2 Hz peak is 42 dB below full scale. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). I've uploaded the C source for my decimation and bandpass filter to ftp.ashford-poly.edu. -- Hana Takahashi Tape trading list upon request. SASE required for international mail. From mnilsson@netcom.com Fri Dec 29 02:04:57 1995 Path: ashpoly!cascade!transat!ukc!fennimore!netcom!mnilsson From: mnilsson@netcom.com (Matthias Nilsson) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec29.020457.8398@netcom.com> Date: Fri, 29 Dec 1995 02:04:57 GMT References: <1995Dec28.170157.8579@inria.fr> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Dec28.170157.8579@inria.fr>, htakahashi@inria.fr (Hana Takahashi) 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. -- Matthias Nilsson *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From bramirez@stanford.edu Sun Dec 31 00:23:57 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!stanford!bramirez From: bramirez@stanford.edu (Bastien Ramírez) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec31.002357.5155@stanford.edu> Date: Sun, 31 Dec 1995 00:23:57 GMT References: <1995Dec28.170157.8579@inria.fr> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Dec28.170157.8579@inria.fr>, htakahashi@inria.fr (Hana Takahashi) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. -- Bastien Ramírez "They will send a copy in my place." Atari Falcon 030 / FreeBSD 2.1 From ofischer@mindspring.com Sun Dec 31 22:57:57 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mindspring!ofischer From: ofischer@mindspring.com (Olga Fischer) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec31.225757.9137@mindspring.com> Date: Sun, 31 Dec 1995 22:57:57 GMT References: <1995Dec28.170157.8579@inria.fr> <1995Dec31.002357.5155@stanford.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Dec31.002357.5155@stanford.edu>, bramirez@stanford.edu (Bastien Ramírez) writes: > If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! -- Olga Fischer -- MindSpring Enterprises "We don't sign stars. We build them." From srobertson@uu.net Mon Jan 01 02:07:57 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!uu!srobertson From: srobertson@uu.net (Seo-yeon Robertson) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jan01.020757.5514@uu.net> Date: Mon, 01 Jan 1996 02:07:57 GMT References: <1995Dec28.170157.8579@inria.fr> <1995Dec31.002357.5155@stanford.edu> <1995Dec31.225757.9137@mindspring.com> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Dec31.225757.9137@mindspring.com>, ofischer@mindspring.com (Olga Fischer) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! -- Seo-yeon Robertson "Row 14. No joke." Commodore Amiga 500 (1MB OCS) / FreeBSD 2.1