From kbrennan@ox.ac.uk Sat Jan 22 21:52:52 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!ox!kbrennan From: kbrennan@ox.ac.uk (Karen Brennan) Newsgroups: comp.dsp Subject: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Jan22.215252.4475@ox.ac.uk> Date: Sat, 22 Jan 1994 21:52:52 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 11 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. Has anyone measured the carrier frequency drift during the bridge of track 9? -- Karen Brennan *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From leriksson@demon.co.uk Mon Jan 24 13:44:52 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!demon!leriksson From: leriksson@demon.co.uk (Lucia Eriksson) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Jan24.134452.7906@demon.co.uk> Date: Mon, 24 Jan 1994 13:44:52 GMT References: <1994Jan22.215252.4475@ox.ac.uk> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jan22.215252.4475@ox.ac.uk>, kbrennan@ox.ac.uk (Karen Brennan) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. > With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. -- Lucia Eriksson Tape trading list upon request. SASE required for international mail. From hsuzuki@cam.ac.uk Mon Jan 24 19:23:52 1994 Path: ashpoly!cascade!brgate!saturno!cam!hsuzuki From: hsuzuki@cam.ac.uk (Hugo Suzuki) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Jan24.192352.5359@cam.ac.uk> Date: Mon, 24 Jan 1994 19:23:52 GMT References: <1994Jan22.215252.4475@ox.ac.uk> <1994Jan24.134452.7906@demon.co.uk> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1994Jan24.134452.7906@demon.co.uk>, leriksson@demon.co.uk (Lucia Eriksson) writes: > That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. Good work on the windowing. I replicated your result with an 8192-point FFT on a SPARCstation 20. The peak is exactly 14.2003 Hz. -- Hugo Suzuki Tape trading list upon request. SASE required for international mail. From ktakahashi@delphi.com Wed Jan 26 13:06:52 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!ktakahashi From: ktakahashi@delphi.com (Kirsty Takahashi) Newsgroups: comp.dsp Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1994Jan26.130652.4605@delphi.com> Date: Wed, 26 Jan 1994 13:06:52 GMT References: <1994Jan22.215252.4475@ox.ac.uk> <1994Jan24.134452.7906@demon.co.uk> <1994Jan24.192352.5359@cam.ac.uk> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jan24.192352.5359@cam.ac.uk>, hsuzuki@cam.ac.uk (Hugo Suzuki) writes: > Good work on the windowing. I replicated your result with an 8192-point FFT on a SPARCstation 20. The peak is exactly 14.2003 Hz. Have you checked your sound card's ADC clock? Cheap Sound Blaster cards use uncalibrated ceramic resonators that drift with temperature. -- === Kirsty Takahashi === Dept of Electrical Engineering, Delphi Internet Services "We don't sign stars. We build them."