From asato@panix.com Thu Sep 07 22:18:46 1995 Path: ashpoly!cascade!brgate!saturno!panix!asato From: asato@panix.com (Anja Sato) Newsgroups: comp.dsp Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Sep07.221846.1970@panix.com> Date: Thu, 07 Sep 1995 22:18:46 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. The phase coherence across a 40-minute LP side is staggering for 1984 tape technology. -- Anja Sato "When every node is whole, the channel opens." Acorn RiscPC 600 / Linux 1.2.13 From doliveira@cam.ac.uk Sat Sep 09 14:28:46 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cam!doliveira From: doliveira@cam.ac.uk (Dong-hyun Oliveira) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Sep09.142846.6238@cam.ac.uk> Date: Sat, 09 Sep 1995 14:28:46 GMT References: <1995Sep07.221846.1970@panix.com> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Sep07.221846.1970@panix.com>, asato@panix.com (Anja Sato) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. 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. -- Dong-hyun Oliveira "A soul is not exclusive to biology." Amiga 1200 (Blizzard 030/50) / TOS 4.04