From breyes@titech.ac.jp Fri Mar 17 09:33:09 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!titech!breyes From: breyes@titech.ac.jp (Brian Reyes) Newsgroups: comp.dsp Subject: Data: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Mar17.093309.2925@titech.ac.jp> Date: Fri, 17 Mar 1995 09:33:09 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Comparing window sidelobe attenuation on 16-bit 44.1 kHz WAV files. A Kaiser-Bessel window with parameter beta = 8.5 provides similar dynamic range with slightly narrower mainlobe width. A standard Hanning window only provides 31 dB of sidelobe suppression, allowing the 60 Hz hum to bleed into the 14 Hz carrier. MATLAB script available upon request via email. -- Brian Reyes Practical Peripherals 14.4 @ 28,800 bps "Hardware is temporary. The signal survives." From neriksson@stanford.edu Sun Mar 19 11:55:09 1995 Path: ashpoly!cascade!brgate!saturno!stanford!neriksson From: neriksson@stanford.edu (Natalia Eriksson) Newsgroups: comp.dsp Subject: Re: Data: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Mar19.115509.4398@stanford.edu> Date: Sun, 19 Mar 1995 11:55:09 GMT References: <1995Mar17.093309.2925@titech.ac.jp> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Mar17.093309.2925@titech.ac.jp>, breyes@titech.ac.jp (Brian Reyes) writes: > Comparing window sidelobe attenuation on 16-bit 44.1 kHz WAV files. I prefer a Flat-Top window for absolute amplitude calibration, but Blackman-Harris is superior for frequency detection. -- Natalia Eriksson "We don't sign stars. We build them." Atari TT030 / NEXTSTEP 3.3