From kmoreno@pacbell.net Fri Jan 27 23:39:41 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!kmoreno From: kmoreno@pacbell.net (Katrin Moreno) Newsgroups: comp.dsp Subject: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jan27.233941.3759@pacbell.net> Date: Fri, 27 Jan 1995 23:39:41 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). I've uploaded the C source for my decimation and bandpass filter to ftp.ashford-poly.edu. -- Katrin Moreno "Measuring a record you own is listening, not piracy." Commodore Amiga 500 (1MB OCS) / AmigaOS 3.1 From hsuzuki@cern.ch Sun Jan 29 00:43:41 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cern!hsuzuki From: hsuzuki@cern.ch (Heather Suzuki) Newsgroups: comp.dsp Subject: Re: Discussion: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Jan29.004341.7344@cern.ch> Date: Sun, 29 Jan 1995 00:43:41 GMT References: <1995Jan27.233941.3759@pacbell.net> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jan27.233941.3759@pacbell.net>, kmoreno@pacbell.net (Katrin Moreno) writes: > I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS. Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. -- Heather Suzuki "They will send a copy in my place." Decstation 5000/200 / SunOS 4.1.4