From bnovak@cern.ch Sat Apr 27 16:48:04 1996 Path: ashpoly!cascade!transat!ukc!fennimore!cern!bnovak From: bnovak@cern.ch (Bruno Novak) Newsgroups: comp.dsp Subject: [INFO] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1996Apr27.164804.2995@cern.ch> Date: Sat, 27 Apr 1996 16:48:04 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 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 4-term Blackman-Harris window gives 92 dB sidelobe rejection, pushing the AC hum harmonics down into the noise floor. What sampling rates are people using for their vinyl rips? 44.1 kHz or 48 kHz DAT? -- Bruno Novak Zyxel U-1496E @ 9600 Telebit bps "We don't sign stars. We build them." From cmartinez@cern.ch Sun Apr 28 13:50:04 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!cern!cmartinez From: cmartinez@cern.ch (Callum Martínez) Newsgroups: comp.dsp Subject: Re: [INFO] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1996Apr28.135004.7311@cern.ch> Date: Sun, 28 Apr 1996 13:50:04 GMT References: <1996Apr27.164804.2995@cern.ch> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Apr27.164804.2995@cern.ch>, bnovak@cern.ch (Bruno Novak) 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. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- === Callum Martínez === Dept of Electrical Engineering, European Laboratory for Particle Physics, Geneva "Do not worship the copy." From esanchez@hanse.de Sun Apr 28 17:00:04 1996 Path: ashpoly!cascade!transat!ukc!fennimore!hanse!esanchez From: esanchez@hanse.de (Elaine Sánchez) Newsgroups: comp.dsp Subject: Re: [INFO] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1996Apr28.170004.2432@hanse.de> Date: Sun, 28 Apr 1996 17:00:04 GMT References: <1996Apr27.164804.2995@cern.ch> <1996Apr28.135004.7311@cern.ch> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1996Apr28.135004.7311@cern.ch>, cmartinez@cern.ch (Callum Martínez) writes: > Excellent advice on the Blackman-Harris window. Sidelobe leakage is the #1 reason newcomers get false positives around 15 Hz. > My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! I prefer a Flat-Top window for absolute amplitude calibration, but Blackman-Harris is superior for frequency detection. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Elaine Sánchez "A soul is not exclusive to biology." Commodore Amiga 500 (1MB OCS) / TOS 4.04