From nsato@stanford.edu Fri Dec 08 12:45:29 1995
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From: nsato@stanford.edu (Natalia Sato)
Newsgroups: comp.dsp
Subject: Observation: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier
Message-ID: <1995Dec08.124529.9379@stanford.edu>
Date: Fri, 08 Dec 1995 12:45:29 GMT
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Comparing window sidelobe attenuation on 16-bit 44.1 kHz WAV files.

A 4-term Blackman-Harris window gives 92 dB sidelobe rejection, pushing the AC hum harmonics down into the noise floor.
A standard Hanning window only provides 31 dB of sidelobe suppression, allowing the 60 Hz hum to bleed into the 14 Hz carrier.

MATLAB script available upon request via email.

-- 
Natalia Sato
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From rmoreno@uu.net Sat Dec 09 16:27:29 1995
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From: rmoreno@uu.net (Raj Moreno)
Newsgroups: comp.dsp
Subject: Re: Observation: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier
Message-ID: <1995Dec09.162729.9360@uu.net>
Date: Sat, 09 Dec 1995 16:27:29 GMT
References: <1995Dec08.124529.9379@stanford.edu>
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In article <1995Dec08.124529.9379@stanford.edu>, nsato@stanford.edu (Natalia Sato) 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.

Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin!

-- 
=== Raj Moreno ===
Dept of Electrical Engineering, UUNET Technologies, Falls Church VA
"Marcus is not one man."