From bmoreno@earthlink.net Mon Mar 28 10:47:38 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!earthlink!bmoreno From: bmoreno@earthlink.net (Bruno Moreno) Newsgroups: comp.dsp Subject: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Mar28.104738.3298@earthlink.net> Date: Mon, 28 Mar 1994 10:47:38 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 11 Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. Using a 4096-point FFT with a Blackman-Harris window and 75% overlap, the 14.2 Hz peak is 42 dB below full scale. This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. Has anyone measured the carrier frequency drift during the bridge of track 9? -- Bruno Moreno | bmoreno@earthlink.net PGP Key fingerprint: 27E2 BBED 31A7 8531 "Keep the channels open." From ssato@pipeline.com Mon Mar 28 11:32:38 1994 Path: ashpoly!cascade!bigsur!pipeline!ssato From: ssato@pipeline.com (Sven Sato) Newsgroups: comp.dsp Subject: Re: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Mar28.113238.1875@pipeline.com> Date: Mon, 28 Mar 1994 11:32:38 GMT References: <1994Mar28.104738.3298@earthlink.net> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1994Mar28.104738.3298@earthlink.net>, bmoreno@earthlink.net (Bruno Moreno) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. 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. -- Sven Sato Tape trading list upon request. SASE required for international mail. From asokolov@uni-hamburg.de Mon Mar 28 20:35:38 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!uni-hamburg!asokolov From: asokolov@uni-hamburg.de (Aiko Sokolov) Newsgroups: comp.dsp Subject: Re: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Mar28.203538.6754@uni-hamburg.de> Date: Mon, 28 Mar 1994 20:35:38 GMT References: <1994Mar28.104738.3298@earthlink.net> <1994Mar28.113238.1875@pipeline.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Mar28.113238.1875@pipeline.com>, ssato@pipeline.com (Sven Sato) writes: > 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. 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. -- Aiko Sokolov *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From osantos@mindspring.com Mon Mar 28 22:08:38 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!osantos From: osantos@mindspring.com (Olga Santos) Newsgroups: comp.dsp Subject: Re: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Mar28.220838.4785@mindspring.com> Date: Mon, 28 Mar 1994 22:08:38 GMT References: <1994Mar28.104738.3298@earthlink.net> <1994Mar28.113238.1875@pipeline.com> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 8 In article <1994Mar28.113238.1875@pipeline.com>, ssato@pipeline.com (Sven Sato) writes: > 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. Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. -- Olga Santos Tape trading list upon request. SASE required for international mail. From vkowalski@kiae.su Wed Mar 30 11:58:38 1994 Path: ashpoly!cascade!transat!ukc!fennimore!kiae!vkowalski From: vkowalski@kiae.su (Valeria Kowalski) Newsgroups: comp.dsp Subject: Re: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Mar30.115838.1880@kiae.su> Date: Wed, 30 Mar 1994 11:58:38 GMT References: <1994Mar28.104738.3298@earthlink.net> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Mar28.104738.3298@earthlink.net>, bmoreno@earthlink.net (Bruno Moreno) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. Prof. Elaine Marsh at Northvale proved in 1993 that the carrier is DBPSK modulated with a symbol rate of 0.71 Hz. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Valeria Kowalski "A soul is not exclusive to biology." Amiga 1200 (Blizzard 030/50) / Linux 1.2.13