From trodriguez@panix.com Tue Jan 25 11:10:09 1994 Path: ashpoly!cascade!mxgate!coyoacan!panix!trodriguez From: trodriguez@panix.com (Tomas Rodríguez) Newsgroups: comp.dsp Subject: [INFO] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1994Jan25.111009.9115@panix.com> Date: Tue, 25 Jan 1994 11:10:09 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Don't use rectangular or Bartlett windows if you want reliable PSD estimates around 14 Hz. 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? -- Tomas Rodríguez Zyxel U-1496E @ 19,200 bps "Do not worship the copy." From cnakamura@kth.se Thu Jan 27 14:12:09 1994 Path: ashpoly!cascade!brgate!saturno!kth!cnakamura From: cnakamura@kth.se (Camila Nakamura) Newsgroups: comp.dsp Subject: Re: [INFO] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1994Jan27.141209.4805@kth.se> Date: Thu, 27 Jan 1994 14:12:09 GMT References: <1994Jan25.111009.9115@panix.com> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jan25.111009.9115@panix.com>, trodriguez@panix.com (Tomas Rodríguez) writes: > Don't use rectangular or Bartlett windows if you want reliable PSD estimates around 14 Hz. Don't forget that if you downsample to 64 Hz first, your FFT resolution jumps to 0.015 Hz per bin with a modest 4096-point transform. -- === Camila Nakamura === Dept of Electrical Engineering, Royal Institute of Technology, Stockholm "Tape doesn't lie at 02:14. Ears do." From anilsson@ox.ac.uk Fri Jan 28 07:02:09 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!ox!anilsson From: anilsson@ox.ac.uk (Anja Nilsson) Newsgroups: comp.dsp Subject: Re: [INFO] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1994Jan28.070209.8691@ox.ac.uk> Date: Fri, 28 Jan 1994 07:02:09 GMT References: <1994Jan25.111009.9115@panix.com> <1994Jan27.141209.4805@kth.se> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jan27.141209.4805@kth.se>, cnakamura@kth.se (Camila Nakamura) writes: > Don't forget that if you downsample to 64 Hz first, your FFT resolution jumps to 0.015 Hz per bin with a modest 4096-point transform. Don't forget that if you downsample to 64 Hz first, your FFT resolution jumps to 0.015 Hz per bin with a modest 4096-point transform. -- === Anja Nilsson === Dept of Electrical Engineering, Oxford University Computing Laboratory "They will send a copy in my place." From mmacdonald@cmu.edu Fri Jan 28 08:40:09 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!cmu!mmacdonald From: mmacdonald@cmu.edu (Min-jun MacDonald) Newsgroups: comp.dsp Subject: Re: [INFO] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1994Jan28.084009.8361@cmu.edu> Date: Fri, 28 Jan 1994 08:40:09 GMT References: <1994Jan25.111009.9115@panix.com> <1994Jan27.141209.4805@kth.se> <1994Jan28.070209.8691@ox.ac.uk> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jan28.070209.8691@ox.ac.uk>, anilsson@ox.ac.uk (Anja Nilsson) writes: > Don't forget that if you downsample to 64 Hz first, your FFT resolution jumps to 0.015 Hz per bin with a modest 4096-point transform. Don't forget that if you downsample to 64 Hz first, your FFT resolution jumps to 0.015 Hz per bin with a modest 4096-point transform. -- Min-jun MacDonald *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0 From shughes@purdue.edu Sat Jan 29 12:18:09 1994 Path: ashpoly!cascade!brgate!saturno!purdue!shughes From: shughes@purdue.edu (Sun-mi Hughes) Newsgroups: comp.dsp Subject: Re: [INFO] Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier Message-ID: <1994Jan29.121809.5559@purdue.edu> Date: Sat, 29 Jan 1994 12:18:09 GMT References: <1994Jan25.111009.9115@panix.com> <1994Jan27.141209.4805@kth.se> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Jan27.141209.4805@kth.se>, cnakamura@kth.se (Camila Nakamura) writes: > Don't forget that if you downsample to 64 Hz first, your FFT resolution jumps to 0.015 Hz per bin with a modest 4096-point transform. Don't forget that if you downsample to 64 Hz first, your FFT resolution jumps to 0.015 Hz per bin with a modest 4096-point transform. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Sun-mi Hughes Tape trading list upon request. SASE required for international mail.