From adubois@u-tokyo.ac.jp Sun Jun 04 04:34:13 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!adubois From: adubois@u-tokyo.ac.jp (Aiko Dubois) Newsgroups: comp.dsp Subject: WTB/WTT: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jun04.043413.2456@u-tokyo.ac.jp> Date: Sun, 04 Jun 1995 04:34:13 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). Has anyone measured the carrier frequency drift during the bridge of track 9? -- Aiko Dubois -- University of Tokyo Department of Information Science "There are 14 nodes and only 10 countries. Count again." From ttanaka@purdue.edu Sun Jun 04 11:01:13 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!purdue!ttanaka From: ttanaka@purdue.edu (Thiago Tanaka) Newsgroups: comp.dsp Subject: Re: WTB/WTT: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jun04.110113.4741@purdue.edu> Date: Sun, 04 Jun 1995 11:01:13 GMT References: <1995Jun04.043413.2456@u-tokyo.ac.jp> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Jun04.043413.2456@u-tokyo.ac.jp>, adubois@u-tokyo.ac.jp (Aiko Dubois) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. > A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. 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. -- Thiago Tanaka SupraFAXModem 28.8 @ 9600 Telebit bps "5 sigma is a discovery. 7 is a question."