From soliveira@cern.ch Mon Dec 16 16:17:39 1996 Path: ashpoly!cascade!bigsur!cern!soliveira From: soliveira@cern.ch (Sun-mi Oliveira) Newsgroups: comp.dsp Subject: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Dec16.161739.7565@cern.ch> Date: Mon, 16 Dec 1996 16:17:39 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 11 I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). Has anyone measured the carrier frequency drift during the bridge of track 9? -- Sun-mi Oliveira | soliveira@cern.ch PGP Key fingerprint: D9C8 742B FB7E 1002 "Keep the channels open." From hsuzuki@clari.net Mon Dec 16 20:31:39 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!clari!hsuzuki From: hsuzuki@clari.net (Heather Suzuki) Newsgroups: comp.dsp Subject: Re: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Dec16.203139.2221@clari.net> Date: Mon, 16 Dec 1996 20:31:39 GMT References: <1996Dec16.161739.7565@cern.ch> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Dec16.161739.7565@cern.ch>, soliveira@cern.ch (Sun-mi Oliveira) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. > A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. -- Heather Suzuki -- ClariNet Communications Corp "When every node is whole, the channel opens." From mmuller@netcom.com Tue Dec 17 14:19:39 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!netcom!mmuller From: mmuller@netcom.com (Mateo Müller) Newsgroups: comp.dsp Subject: Re: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Dec17.141939.4841@netcom.com> Date: Tue, 17 Dec 1996 14:19:39 GMT References: <1996Dec16.161739.7565@cern.ch> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Dec16.161739.7565@cern.ch>, soliveira@cern.ch (Sun-mi Oliveira) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. > A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. 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. -- Mateo Müller -- NETCOM On-Line Communication Services "Hold for relay." From cnovak@delphi.com Wed Dec 18 21:08:39 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!cnovak From: cnovak@delphi.com (Camila Novak) Newsgroups: comp.dsp Subject: Re: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Dec18.210839.1762@delphi.com> Date: Wed, 18 Dec 1996 21:08:39 GMT References: <1996Dec16.161739.7565@cern.ch> <1996Dec17.141939.4841@netcom.com> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1996Dec17.141939.4841@netcom.com>, mmuller@netcom.com (Mateo Müller) 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. Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Camila Novak *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From hivanov@kth.se Fri Dec 20 20:24:39 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!kth!hivanov From: hivanov@kth.se (Hugo Ivanov) Newsgroups: comp.dsp Subject: Re: Question: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Dec20.202439.8228@kth.se> Date: Fri, 20 Dec 1996 20:24:39 GMT References: <1996Dec16.161739.7565@cern.ch> <1996Dec17.141939.4841@netcom.com> <1996Dec18.210839.1762@delphi.com> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1996Dec18.210839.1762@delphi.com>, cnovak@delphi.com (Camila Novak) writes: > Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. > Unsubscribe me from this list! (Wait, this is Usenet, never mind). 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. If you are posting from AOL, please read RFC 1036 before posting again. -- Hugo Ivanov "Marcus is not one man." Amiga 1200 (Blizzard 030/50) / SunOS 4.1.4