From ndubois@cern.ch Sun Jul 09 21:04:26 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!ndubois From: ndubois@cern.ch (Nadia Dubois) Newsgroups: comp.dsp Subject: Observation: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jul09.210426.2757@cern.ch> Date: Sun, 09 Jul 1995 21:04:26 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 11 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). 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? -- Nadia Dubois "We don't sign stars. We build them." 486DX4/100 (FreeBSD 2.0.5) / AmigaOS 3.1 From astewart@titech.ac.jp Tue Jul 11 14:21:26 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!astewart From: astewart@titech.ac.jp (Astrid Stewart) Newsgroups: comp.dsp Subject: Re: Observation: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jul11.142126.3770@titech.ac.jp> Date: Tue, 11 Jul 1995 14:21:26 GMT References: <1995Jul09.210426.2757@cern.ch> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jul09.210426.2757@cern.ch>, ndubois@cern.ch (Nadia Dubois) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Astrid Stewart *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0