[linux-audio-dev] [ANN] First official release of JAPA - Perceptual Analyser

fons adriaensen fons.adriaensen at skynet.be
Sat Aug 13 19:40:20 UTC 2005

Hello all,

The first official release (0.1.1) of JAPA is now available at


Changes w.r.t. the 0.0.1-alpha release:

 - now uses anti-aliased fonts (via Xft/fontconfig)
 - added /etc/japa.conf 
 - added 80dB range
 - added 440Hz log scale
 - some bugfixes

Many thanks to the alpha testers, in particular Lukas Erni.

JAPA is a 'perceptual' or 'psychoacoustic' audio spectrum
analyser. This means that the filters that are used to
analyse the spectrum have bandwidths that are neither
constant (as in JAAA), nor proportional to the center
frequency (as in a 1/3 octave band analyser), but tuned
to human perception. With the default settings, JAPA uses
a filter set that closely follows the Bark scale.


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