From mmoreau@kth.se Wed Apr 26 23:21:16 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!kth!mmoreau From: mmoreau@kth.se (Marisol Moreau) Newsgroups: comp.dsp Subject: [FLAME] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Apr26.232116.8737@kth.se> Date: Wed, 26 Apr 1995 23:21:16 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] 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. -- Marisol Moreau "The hatch is open. Is anyone listening?" Commodore Amiga 500 (1MB OCS) / SunOS 4.1.4 From jnovak@mindspring.com Thu Apr 27 12:11:16 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!jnovak From: jnovak@mindspring.com (Julien Novak) Newsgroups: comp.dsp Subject: Re: [FLAME] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Apr27.121116.2846@mindspring.com> Date: Thu, 27 Apr 1995 12:11:16 GMT References: <1995Apr26.232116.8737@kth.se> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Apr26.232116.8737@kth.se>, mmoreau@kth.se (Marisol Moreau) 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. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Julien Novak *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0