From jmartinez@inria.fr Wed Nov 15 05:39:23 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!inria!jmartinez From: jmartinez@inria.fr (Joachim Martínez) Newsgroups: comp.dsp Subject: WTB/WTT: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Nov15.053923.5232@inria.fr> Date: Wed, 15 Nov 1995 05:39:23 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 10 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. What sampling rates are people using for their vinyl rips? 44.1 kHz or 48 kHz DAT? -- Joachim Martínez -- INRIA Rocquencourt "Tape doesn't lie at 02:14. Ears do." From hlindqvist@panix.com Thu Nov 16 04:40:23 1995 Path: ashpoly!cascade!bigsur!panix!hlindqvist From: hlindqvist@panix.com (Hana Lindqvist) Newsgroups: comp.dsp Subject: Re: WTB/WTT: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Nov16.044023.3406@panix.com> Date: Thu, 16 Nov 1995 04:40:23 GMT References: <1995Nov15.053923.5232@inria.fr> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Nov15.053923.5232@inria.fr>, jmartinez@inria.fr (Joachim Martínez) 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. -- === Hana Lindqvist === Dept of Electrical Engineering, Public Access Unix of New York "Hold for relay." From hsuzuki@mindspring.com Sat Nov 18 00:46:23 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!mindspring!hsuzuki From: hsuzuki@mindspring.com (Hana Suzuki) Newsgroups: comp.dsp Subject: Re: WTB/WTT: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Nov18.004623.9546@mindspring.com> Date: Sat, 18 Nov 1995 00:46:23 GMT References: <1995Nov15.053923.5232@inria.fr> <1995Nov16.044023.3406@panix.com> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Nov16.044023.3406@panix.com>, hlindqvist@panix.com (Hana Lindqvist) writes: > I prefer a Flat-Top window for absolute amplitude calibration, but Blackman-Harris is superior for frequency detection. Excellent advice on the Blackman-Harris window. Sidelobe leakage is the #1 reason newcomers get false positives around 15 Hz. PGP Public key available via finger or upon request. -- Hana Suzuki Zyxel U-1496E @ 28,800 bps "Tape doesn't lie at 02:14. Ears do." From mmoreau@pipeline.com Sat Nov 18 09:03:23 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!mmoreau From: mmoreau@pipeline.com (Morag Moreau) Newsgroups: comp.dsp Subject: Re: WTB/WTT: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Nov18.090323.9320@pipeline.com> Date: Sat, 18 Nov 1995 09:03:23 GMT References: <1995Nov15.053923.5232@inria.fr> <1995Nov16.044023.3406@panix.com> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Nov16.044023.3406@panix.com>, hlindqvist@panix.com (Hana Lindqvist) writes: > I prefer a Flat-Top window for absolute amplitude calibration, but Blackman-Harris is superior for frequency detection. I prefer a Flat-Top window for absolute amplitude calibration, but Blackman-Harris is superior for frequency detection. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Morag Moreau Opinions expressed are solely my own and not those of The Pipeline Internet Network. ------------------------------------------------------------