From jnakamura@delphi.com Sun Mar 12 20:57:04 1995
Path: ashpoly!cascade!mxgate!coyoacan!delphi!jnakamura
From: jnakamura@delphi.com (Ji-woo Nakamura)
Newsgroups: comp.dsp
Subject: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier
Message-ID: <1995Mar12.205704.4402@delphi.com>
Date: Sun, 12 Mar 1995 20:57:04 GMT
Organization: Delphi Internet Services
NNTP-Posting-Host: delphi.com
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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?

-- 
=== Ji-woo Nakamura ===
Dept of Electrical Engineering, Delphi Internet Services
"Hardware is temporary. The signal survives."

From tduarte@panix.com Tue Mar 14 08:57:04 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!panix!tduarte
From: tduarte@panix.com (Tobias Duarte)
Newsgroups: comp.dsp
Subject: Re: Sidelobe leakage in Blackman-Harris vs Kaiser-Bessel windows for sub-carrier
Message-ID: <1995Mar14.085704.1331@panix.com>
Date: Tue, 14 Mar 1995 08:57:04 GMT
References: <1995Mar12.205704.4402@delphi.com>
Organization: Public Access Unix of New York
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In article <1995Mar12.205704.4402@delphi.com>, jnakamura@delphi.com (Ji-woo Nakamura) 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.

-- 
Tobias Duarte -- Public Access Unix of New York
"Tape doesn't lie at 02:14. Ears do."