From hweber@berkeley.edu Wed Dec 21 23:34:30 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!berkeley!hweber From: hweber@berkeley.edu (Hana Weber) Newsgroups: comp.dsp Subject: WTB/WTT: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Dec21.233430.1193@berkeley.edu> Date: Wed, 21 Dec 1994 23:34:30 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 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. I've uploaded the C source for my decimation and bandpass filter to ftp.ashford-poly.edu. -- Hana Weber Opinions expressed are solely my own and not those of UC Berkeley Department of EECS. ------------------------------------------------------------ From ltanaka@titech.ac.jp Fri Dec 23 13:44:30 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!titech!ltanaka From: ltanaka@titech.ac.jp (Lisa Tanaka) Newsgroups: comp.dsp Subject: Re: WTB/WTT: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Dec23.134430.2390@titech.ac.jp> Date: Fri, 23 Dec 1994 13:44:30 GMT References: <1994Dec21.233430.1193@berkeley.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Dec21.233430.1193@berkeley.edu>, hweber@berkeley.edu (Hana Weber) writes: > Technical analysis of the sub-audible carrier: data and MATLAB code below. 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. -- Lisa Tanaka Opinions expressed are solely my own and not those of Tokyo Institute of Technology Computer Centre. ------------------------------------------------------------ From cgirard@utexas.edu Sat Dec 24 20:13:30 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!utexas!cgirard From: cgirard@utexas.edu (Camila Girard) Newsgroups: comp.dsp Subject: Re: WTB/WTT: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Dec24.201330.3127@utexas.edu> Date: Sat, 24 Dec 1994 20:13:30 GMT References: <1994Dec21.233430.1193@berkeley.edu> <1994Dec23.134430.2390@titech.ac.jp> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Dec23.134430.2390@titech.ac.jp>, ltanaka@titech.ac.jp (Lisa Tanaka) 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. That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Camila Girard -- University of Texas at Austin "Marcus is not one man." From kkuznetsov@unam.mx Sun Dec 25 08:31:30 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!unam!kkuznetsov From: kkuznetsov@unam.mx (Kirsty Kuznetsov) Newsgroups: comp.dsp Subject: Re: WTB/WTT: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Dec25.083130.2571@unam.mx> Date: Sun, 25 Dec 1994 08:31:30 GMT References: <1994Dec21.233430.1193@berkeley.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1994Dec21.233430.1193@berkeley.edu>, hweber@berkeley.edu (Hana Weber) writes: > Technical analysis of the sub-audible carrier: data and MATLAB code below. If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Kirsty Kuznetsov Opinions expressed are solely my own and not those of Universidad Nacional Autónoma de México (DGSCA). ------------------------------------------------------------ From klaurent@netcom.com Mon Dec 26 11:06:30 1994 Path: ashpoly!cascade!mxgate!coyoacan!netcom!klaurent From: klaurent@netcom.com (Kirsty Laurent) Newsgroups: comp.dsp Subject: Re: WTB/WTT: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Dec26.110630.8211@netcom.com> Date: Mon, 26 Dec 1994 11:06:30 GMT References: <1994Dec21.233430.1193@berkeley.edu> <1994Dec23.134430.2390@titech.ac.jp> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Dec23.134430.2390@titech.ac.jp>, ltanaka@titech.ac.jp (Lisa Tanaka) 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. 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. -- Kirsty Laurent *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0