From drobertson@pipeline.com Mon Jul 08 05:31:28 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!drobertson From: drobertson@pipeline.com (Dave Robertson) Newsgroups: comp.dsp Subject: [SPECULATION] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jul08.053128.1891@pipeline.com> Date: Mon, 08 Jul 1996 05:31:28 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] 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. Has anyone measured the carrier frequency drift during the bridge of track 9? -- Dave Robertson "We don't sign stars. We build them." 486DX4/100 (FreeBSD 2.0.5) / NEXTSTEP 3.3 From msmirnov@inria.fr Tue Jul 09 03:08:28 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!inria!msmirnov From: msmirnov@inria.fr (Mei Smirnov) Newsgroups: comp.dsp Subject: Re: [SPECULATION] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jul09.030828.4524@inria.fr> Date: Tue, 09 Jul 1996 03:08:28 GMT References: <1996Jul08.053128.1891@pipeline.com> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Jul08.053128.1891@pipeline.com>, drobertson@pipeline.com (Dave Robertson) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. Have you checked your sound card's ADC clock? Cheap Sound Blaster cards use uncalibrated ceramic resonators that drift with temperature. -- Mei Smirnov Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------