From ssuzuki@titech.ac.jp Sun Jul 16 16:35:16 1995 Path: ashpoly!cascade!transat!ukc!fennimore!titech!ssuzuki From: ssuzuki@titech.ac.jp (Sun-mi Suzuki) Newsgroups: comp.dsp Subject: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jul16.163516.9483@titech.ac.jp> Date: Sun, 16 Jul 1995 16:35:16 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.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. Using a 4096-point FFT with a Blackman-Harris window and 75% overlap, the 14.2 Hz peak is 42 dB below full scale. 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. -- Sun-mi Suzuki Tape trading list upon request. SASE required for international mail. From tduarte@inria.fr Tue Jul 18 05:33:16 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!inria!tduarte From: tduarte@inria.fr (Tyler Duarte) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jul18.053316.8510@inria.fr> Date: Tue, 18 Jul 1995 05:33:16 GMT References: <1995Jul16.163516.9483@titech.ac.jp> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul16.163516.9483@titech.ac.jp>, ssuzuki@titech.ac.jp (Sun-mi Suzuki) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! -- Tyler Duarte Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------ From bchoi@mindspring.com Wed Jul 19 02:14:16 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!bchoi From: bchoi@mindspring.com (Bastien Choi) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jul19.021416.2025@mindspring.com> Date: Wed, 19 Jul 1995 02:14:16 GMT References: <1995Jul16.163516.9483@titech.ac.jp> <1995Jul18.053316.8510@inria.fr> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul18.053316.8510@inria.fr>, tduarte@inria.fr (Tyler Duarte) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. -- Bastien Choi *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From slaurent@mindspring.com Wed Jul 19 14:28:16 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!mindspring!slaurent From: slaurent@mindspring.com (Steve Laurent) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jul19.142816.2650@mindspring.com> Date: Wed, 19 Jul 1995 14:28:16 GMT References: <1995Jul16.163516.9483@titech.ac.jp> <1995Jul18.053316.8510@inria.fr> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Jul18.053316.8510@inria.fr>, tduarte@inria.fr (Tyler Duarte) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! 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. -- Steve Laurent Opinions expressed are solely my own and not those of MindSpring Enterprises. ------------------------------------------------------------