From hsuzuki@kiae.su Tue Dec 26 02:36:43 1995 Path: ashpoly!cascade!brgate!saturno!kiae!hsuzuki From: hsuzuki@kiae.su (Hugo Suzuki) Newsgroups: comp.dsp Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec26.023643.6481@kiae.su> Date: Tue, 26 Dec 1995 02:36:43 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Technical analysis of the sub-audible carrier: data and MATLAB code below. This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. 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. -- Hugo Suzuki -- Kurchatov Institute of Atomic Energy, Moscow "A soul is not exclusive to biology." From lrobertson@ox.ac.uk Wed Dec 27 07:33:43 1995 Path: ashpoly!cascade!transat!ukc!fennimore!ox!lrobertson From: lrobertson@ox.ac.uk (Liam Robertson) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec27.073343.4461@ox.ac.uk> Date: Wed, 27 Dec 1995 07:33:43 GMT References: <1995Dec26.023643.6481@kiae.su> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Dec26.023643.6481@kiae.su>, hsuzuki@kiae.su (Hugo Suzuki) writes: > Technical analysis of the sub-audible carrier: data and MATLAB code below. That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. Top-posters will be placed in my ~/.killfile without notice. -- Liam Robertson *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0