From acampbell@stanford.edu Mon Jan 08 00:51:28 1996 Path: ashpoly!cascade!mxgate!coyoacan!stanford!acampbell From: acampbell@stanford.edu (Andrei Campbell) Newsgroups: comp.dsp Subject: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jan08.005128.1974@stanford.edu> Date: Mon, 08 Jan 1996 00:51:28 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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). This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. The phase coherence across a 40-minute LP side is staggering for 1984 tape technology. -- Andrei Campbell Tape trading list upon request. SASE required for international mail. From rokonkwo@netcom.com Tue Jan 09 09:17:28 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!netcom!rokonkwo From: rokonkwo@netcom.com (Renata Okonkwo) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jan09.091728.1007@netcom.com> Date: Tue, 09 Jan 1996 09:17:28 GMT References: <1996Jan08.005128.1974@stanford.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Jan08.005128.1974@stanford.edu>, acampbell@stanford.edu (Andrei Campbell) 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. -- Renata Okonkwo "Hardware is temporary. The signal survives." Mac IIci / 68882 FPU / System 7.5.1 From imoreno@kiae.su Wed Jan 10 07:55:28 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!kiae!imoreno From: imoreno@kiae.su (Ines Moreno) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jan10.075528.5777@kiae.su> Date: Wed, 10 Jan 1996 07:55:28 GMT References: <1996Jan08.005128.1974@stanford.edu> <1996Jan09.091728.1007@netcom.com> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jan09.091728.1007@netcom.com>, rokonkwo@netcom.com (Renata Okonkwo) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Ines Moreno -- Kurchatov Institute of Atomic Energy, Moscow "Marcus is not one man." From dwatanabe@inria.fr Wed Jan 10 09:32:28 1996 Path: ashpoly!cascade!brgate!saturno!inria!dwatanabe From: dwatanabe@inria.fr (Dong-hyun Watanabe) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jan10.093228.3263@inria.fr> Date: Wed, 10 Jan 1996 09:32:28 GMT References: <1996Jan08.005128.1974@stanford.edu> <1996Jan09.091728.1007@netcom.com> <1996Jan10.075528.5777@kiae.su> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Jan10.075528.5777@kiae.su>, imoreno@kiae.su (Ines Moreno) writes: > If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Dong-hyun Watanabe Zyxel U-1496E @ 28,800 bps "5 sigma is a discovery. 7 is a question."