[linux-audio-dev] [ANN] JAPA Jack/Alsa Perceptual Analyser

The first (alpha) release of JAPA is now available at <http://users.skynet.be/solaris/linuxaudio> 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. In contrast to JAAA, this is more an acoustical or musical tool than a purely technical one. Possible uses include spectrum monitoring while mixing or mastering, evaluation of ambient noise, and (using pink noise), equalisation of PA systems. JAPA allows you to measure two inputs at the same time, compare them, store them to memory and compare them to stored traces. It offers a number of resolutions, speeds, and various display options. The dual inputs and memories will find their way into future JAAA versions as well. This is a source release. You will also need libclalsadrv, libclthreads (from the same place), and libfftw3f. Enjoy ! -- FA