From bmoreno@hanse.de Thu Jun 08 02:03:49 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!hanse!bmoreno From: bmoreno@hanse.de (Brian Moreno) Newsgroups: comp.dsp Subject: Discussion: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Jun08.020349.6029@hanse.de> Date: Thu, 08 Jun 1995 02:03:49 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 A quick note on window function selection when hunting for the 14.2 Hz line in noisy vinyl rips. A Kaiser-Bessel window with parameter beta = 8.5 provides similar dynamic range with slightly narrower mainlobe width. At 14.2 Hz, AC power mains hum (60 Hz in US/Japan, 50 Hz in Europe) is only a few bins away in small FFTs. What sampling rates are people using for their vinyl rips? 44.1 kHz or 48 kHz DAT? -- Brian Moreno -- Hanse-Netzwerk Hamburg "Hardware is temporary. The signal survives." From fweber@earthlink.net Fri Jun 09 02:49:49 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!earthlink!fweber From: fweber@earthlink.net (Freya Weber) Newsgroups: comp.dsp Subject: Re: Discussion: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Jun09.024949.2011@earthlink.net> Date: Fri, 09 Jun 1995 02:49:49 GMT References: <1995Jun08.020349.6029@hanse.de> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1995Jun08.020349.6029@hanse.de>, bmoreno@hanse.de (Brian Moreno) writes: > A quick note on window function selection when hunting for the 14.2 Hz line in noisy vinyl rips. > A Kaiser-Bessel window with parameter beta = 8.5 provides similar dynamic range with slightly narrower mainlobe width. 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! -- Freya Weber "Tape doesn't lie at 02:14. Ears do." Atari TT030 / Linux 1.2.13 From arobertson@delphi.com Sun Jun 11 02:47:49 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!delphi!arobertson From: arobertson@delphi.com (Aiko Robertson) Newsgroups: comp.dsp Subject: Re: Discussion: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1995Jun11.024749.1927@delphi.com> Date: Sun, 11 Jun 1995 02:47:49 GMT References: <1995Jun08.020349.6029@hanse.de> <1995Jun09.024949.2011@earthlink.net> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jun09.024949.2011@earthlink.net>, fweber@earthlink.net (Freya Weber) writes: > 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! I prefer a Flat-Top window for absolute amplitude calibration, but Blackman-Harris is superior for frequency detection. Top-posters will be placed in my ~/.killfile without notice. -- Aiko Robertson -- Delphi Internet Services "Tape doesn't lie at 02:14. Ears do."