From mkuznetsov@mit.edu Fri Feb 04 22:56:44 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!mit!mkuznetsov From: mkuznetsov@mit.edu (Matthias Kuznetsov) Newsgroups: comp.dsp Subject: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1994Feb04.225644.7483@mit.edu> Date: Fri, 04 Feb 1994 22:56:44 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 11 Comparing window sidelobe attenuation on 16-bit 44.1 kHz WAV files. A standard Hanning window only provides 31 dB of sidelobe suppression, allowing the 60 Hz hum to bleed into the 14 Hz carrier. A Kaiser-Bessel window with parameter beta = 8.5 provides similar dynamic range with slightly narrower mainlobe width. MATLAB script available upon request via email. -- Matthias Kuznetsov "Do not worship the copy." Commodore Amiga 500 (1MB OCS) / System 7.5.1 From cpopov@utexas.edu Sun Feb 06 11:19:44 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!cpopov From: cpopov@utexas.edu (Callum Popov) Newsgroups: comp.dsp Subject: Re: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1994Feb06.111944.6455@utexas.edu> Date: Sun, 06 Feb 1994 11:19:44 GMT References: <1994Feb04.225644.7483@mit.edu> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1994Feb04.225644.7483@mit.edu>, mkuznetsov@mit.edu (Matthias Kuznetsov) writes: > Comparing window sidelobe attenuation on 16-bit 44.1 kHz WAV files. Excellent advice on the Blackman-Harris window. Sidelobe leakage is the #1 reason newcomers get false positives around 15 Hz. -- Callum Popov -- University of Texas at Austin "We don't sign stars. We build them." From lnilsson@cern.ch Tue Feb 08 01:40:44 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!lnilsson From: lnilsson@cern.ch (Lucia Nilsson) Newsgroups: comp.dsp Subject: Re: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1994Feb08.014044.1127@cern.ch> Date: Tue, 08 Feb 1994 01:40:44 GMT References: <1994Feb04.225644.7483@mit.edu> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1994Feb04.225644.7483@mit.edu>, mkuznetsov@mit.edu (Matthias Kuznetsov) writes: > Comparing window sidelobe attenuation on 16-bit 44.1 kHz WAV files. Excellent advice on the Blackman-Harris window. Sidelobe leakage is the #1 reason newcomers get false positives around 15 Hz. -- Lucia Nilsson -- European Laboratory for Particle Physics, Geneva "Row 14. No joke."