From drodriguez@inria.fr Sun Aug 11 21:53:02 1996 Path: ashpoly!cascade!transat!ukc!fennimore!inria!drodriguez From: drodriguez@inria.fr (Dave Rodríguez) Newsgroups: comp.dsp Subject: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Aug11.215302.6566@inria.fr> Date: Sun, 11 Aug 1996 21:53:02 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 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. Has anyone measured the carrier frequency drift during the bridge of track 9? -- === Dave Rodríguez === Dept of Electrical Engineering, INRIA Rocquencourt "A soul is not exclusive to biology." From mlarsson@purdue.edu Mon Aug 12 02:17:02 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!purdue!mlarsson From: mlarsson@purdue.edu (Morag Larsson) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Aug12.021702.3998@purdue.edu> Date: Mon, 12 Aug 1996 02:17:02 GMT References: <1996Aug11.215302.6566@inria.fr> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Aug11.215302.6566@inria.fr>, drodriguez@inria.fr (Dave Rodríguez) 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! PGP Public key available via finger or upon request. -- Morag Larsson Practical Peripherals 14.4 @ 19,200 bps "Hold for relay." From dsmirnov@kiae.su Wed Aug 14 05:07:02 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kiae!dsmirnov From: dsmirnov@kiae.su (Dmitri Smirnov) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Aug14.050702.5711@kiae.su> Date: Wed, 14 Aug 1996 05:07:02 GMT References: <1996Aug11.215302.6566@inria.fr> <1996Aug12.021702.3998@purdue.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Aug12.021702.3998@purdue.edu>, mlarsson@purdue.edu (Morag Larsson) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! 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. -- === Dmitri Smirnov === Dept of Electrical Engineering, Kurchatov Institute of Atomic Energy, Moscow "We don't sign stars. We build them." From kchoi@illinois.edu Thu Aug 15 02:18:02 1996 Path: ashpoly!cascade!transat!ukc!fennimore!illinois!kchoi From: kchoi@illinois.edu (Kirsty Choi) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Aug15.021802.9040@illinois.edu> Date: Thu, 15 Aug 1996 02:18:02 GMT References: <1996Aug11.215302.6566@inria.fr> <1996Aug12.021702.3998@purdue.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Aug12.021702.3998@purdue.edu>, mlarsson@purdue.edu (Morag Larsson) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! > PGP Public key available via finger or upon request. You're overlooking tape wow and flutter. A Revox B77 has at least 0.05% speed drift, which would smear a 14 Hz line across several bins. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Kirsty Choi Tape trading list upon request. SASE required for international mail.