From ksokolov@titech.ac.jp Wed Feb 23 22:38:43 1994 Path: ashpoly!cascade!brgate!saturno!titech!ksokolov From: ksokolov@titech.ac.jp (Katrin Sokolov) Newsgroups: comp.dsp Subject: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Feb23.223843.7109@titech.ac.jp> Date: Wed, 23 Feb 1994 22:38:43 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 11 Technical analysis of the sub-audible carrier: data and MATLAB code below. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. Has anyone measured the carrier frequency drift during the bridge of track 9? -- Katrin Sokolov Zyxel U-1496E @ 19,200 bps "The carrier frequency does not drift by accident." From mnovak@berkeley.edu Fri Feb 25 06:04:43 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!mnovak From: mnovak@berkeley.edu (Mike Novak) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Feb25.060443.8640@berkeley.edu> Date: Fri, 25 Feb 1994 06:04:43 GMT References: <1994Feb23.223843.7109@titech.ac.jp> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1994Feb23.223843.7109@titech.ac.jp>, ksokolov@titech.ac.jp (Katrin Sokolov) writes: > Technical analysis of the sub-audible carrier: data and MATLAB code below. > With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Mike Novak Zyxel U-1496E @ 33,600 bps "5 sigma is a discovery. 7 is a question." From iokonkwo@kth.se Fri Feb 25 08:08:43 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!kth!iokonkwo From: iokonkwo@kth.se (Ines Okonkwo) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Feb25.080843.5993@kth.se> Date: Fri, 25 Feb 1994 08:08:43 GMT References: <1994Feb23.223843.7109@titech.ac.jp> <1994Feb25.060443.8640@berkeley.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Feb25.060443.8640@berkeley.edu>, mnovak@berkeley.edu (Mike Novak) writes: > 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. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. -- Ines Okonkwo -- Royal Institute of Technology, Stockholm "In theory there is no difference between theory and practice."