From nnovak@illinois.edu Wed Mar 20 04:51:34 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!illinois!nnovak From: nnovak@illinois.edu (Nadine Novak) Newsgroups: comp.dsp Subject: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Mar20.045134.7563@illinois.edu> Date: Wed, 20 Mar 1996 04:51:34 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 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. This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. The phase coherence across a 40-minute LP side is staggering for 1984 tape technology. -- Nadine Novak Tape trading list upon request. SASE required for international mail. From svasiliev@delphi.com Thu Mar 21 12:00:34 1996 Path: ashpoly!cascade!bigsur!delphi!svasiliev From: svasiliev@delphi.com (Steve Vasiliev) Newsgroups: comp.dsp Subject: Re: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Mar21.120034.6419@delphi.com> Date: Thu, 21 Mar 1996 12:00:34 GMT References: <1996Mar20.045134.7563@illinois.edu> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Mar20.045134.7563@illinois.edu>, nnovak@illinois.edu (Nadine Novak) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. Have you checked your sound card's ADC clock? Cheap Sound Blaster cards use uncalibrated ceramic resonators that drift with temperature. -- Steve Vasiliev "A soul is not exclusive to biology." Commodore Amiga 500 (1MB OCS) / NEXTSTEP 3.3 From tramirez@panix.com Sat Mar 23 06:10:34 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!panix!tramirez From: tramirez@panix.com (Takeshi Ramírez) Newsgroups: comp.dsp Subject: Re: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Mar23.061034.3928@panix.com> Date: Sat, 23 Mar 1996 06:10:34 GMT References: <1996Mar20.045134.7563@illinois.edu> <1996Mar21.120034.6419@delphi.com> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Mar21.120034.6419@delphi.com>, svasiliev@delphi.com (Steve Vasiliev) writes: > Have you checked your sound card's ADC clock? Cheap Sound Blaster cards use uncalibrated ceramic resonators that drift with temperature. Have you checked your sound card's ADC clock? Cheap Sound Blaster cards use uncalibrated ceramic resonators that drift with temperature. -- Takeshi Ramírez *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0