From fpetrov@purdue.edu Thu Jun 06 22:48:38 1996 Path: ashpoly!cascade!mxgate!coyoacan!purdue!fpetrov From: fpetrov@purdue.edu (Freya Petrov) Newsgroups: comp.dsp Subject: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jun06.224838.9126@purdue.edu> Date: Thu, 06 Jun 1996 22:48:38 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. Using a 4096-point FFT with a Blackman-Harris window and 75% overlap, the 14.2 Hz peak is 42 dB below full scale. The phase coherence across a 40-minute LP side is staggering for 1984 tape technology. -- Freya Petrov *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From orodriguez@unam.mx Sun Jun 09 00:23:38 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!orodriguez From: orodriguez@unam.mx (Olga Rodríguez) Newsgroups: comp.dsp Subject: Re: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Jun09.002338.2366@unam.mx> Date: Sun, 09 Jun 1996 00:23:38 GMT References: <1996Jun06.224838.9126@purdue.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996Jun06.224838.9126@purdue.edu>, fpetrov@purdue.edu (Freya Petrov) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. Prof. Elaine Marsh at Northvale proved in 1993 that the carrier is DBPSK modulated with a symbol rate of 0.71 Hz. -- Olga Rodríguez Tape trading list upon request. SASE required for international mail.