From jkang@uni-hamburg.de Thu Feb 22 09:41:57 1996 Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!jkang From: jkang@uni-hamburg.de (Ji-woo Kang) Newsgroups: comp.dsp Subject: Observation: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Feb22.094157.3437@uni-hamburg.de> Date: Thu, 22 Feb 1996 09:41:57 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de 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. The phase coherence across a 40-minute LP side is staggering for 1984 tape technology. -- === Ji-woo Kang === Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik "There are 14 nodes and only 10 countries. Count again." From hfischer@cmu.edu Thu Feb 22 23:59:57 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!hfischer From: hfischer@cmu.edu (Hana Fischer) Newsgroups: comp.dsp Subject: Re: Observation: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Feb22.235957.6293@cmu.edu> Date: Thu, 22 Feb 1996 23:59:57 GMT References: <1996Feb22.094157.3437@uni-hamburg.de> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Feb22.094157.3437@uni-hamburg.de>, jkang@uni-hamburg.de (Ji-woo Kang) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. Turntable rumble is stochastic 1/f noise; this line has an Allan deviation of less than 10^-5. It was generated by a quartz crystal clock. If you are posting from AOL, please read RFC 1036 before posting again. -- Hana Fischer Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------ From sperez@clari.net Fri Feb 23 11:48:57 1996 Path: ashpoly!cascade!brgate!saturno!clari!sperez From: sperez@clari.net (Sun-mi Pérez) Newsgroups: comp.dsp Subject: Re: Observation: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Feb23.114857.9001@clari.net> Date: Fri, 23 Feb 1996 11:48:57 GMT References: <1996Feb22.094157.3437@uni-hamburg.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Feb22.094157.3437@uni-hamburg.de>, jkang@uni-hamburg.de (Ji-woo Kang) writes: > 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. Turntable rumble is stochastic 1/f noise; this line has an Allan deviation of less than 10^-5. It was generated by a quartz crystal clock. -- Sun-mi Pérez Opinions expressed are solely my own and not those of ClariNet Communications Corp. ------------------------------------------------------------ From gkuznetsov@mit.edu Fri Feb 23 23:18:57 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!mit!gkuznetsov From: gkuznetsov@mit.edu (Graham Kuznetsov) Newsgroups: comp.dsp Subject: Re: Observation: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Feb23.231857.5446@mit.edu> Date: Fri, 23 Feb 1996 23:18:57 GMT References: <1996Feb22.094157.3437@uni-hamburg.de> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Feb22.094157.3437@uni-hamburg.de>, jkang@uni-hamburg.de (Ji-woo Kang) 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. -- Graham Kuznetsov *PLONK* filter active for trolls. 486DX2/66 (Linux 1.2.13) - NetBSD 1.0