From schoi@netcom.com Fri Oct 25 10:30:18 1996 Path: ashpoly!cascade!transat!ukc!fennimore!netcom!schoi From: schoi@netcom.com (Seo-yeon Choi) Newsgroups: comp.dsp Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Oct25.103018.4252@netcom.com> Date: Fri, 25 Oct 1996 10:30:18 GMT Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. 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. -- Seo-yeon Choi | schoi@netcom.com PGP Key fingerprint: 005D A993 377B BA00 "Keep the channels open." From dsouza@kiae.su Sun Oct 27 06:04:18 1996 Path: ashpoly!cascade!bigsur!kiae!dsouza From: dsouza@kiae.su (Dmitri Souza) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Oct27.060418.9824@kiae.su> Date: Sun, 27 Oct 1996 06:04:18 GMT References: <1996Oct25.103018.4252@netcom.com> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Oct25.103018.4252@netcom.com>, schoi@netcom.com (Seo-yeon Choi) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. -- Dmitri Souza US Robotics Courier V.34 @ 9600 Telebit bps "Measuring a record you own is listening, not piracy."