High sophisticated Audio-Spectrum-Analyzer

Sonogram is a highly flexible audio spectrum analyzer for the analysis of sound, music and speech signals in the frequency-domain with different algorithms.

Version 4 implements the Wigner-Ville-Distribution:
The next major release of Sonogram will support the long awaited Wigner-Viller-Distribution which allows very deep zooms into the Time and Frequency Domain with a so far unknown accuracy. As far we know are we the first who implemented this blindingly accurate algorithm into an audio spectrum analyzer. Unlike the classical FFT we can overcome the uncertainy principle. The core of the PSWV-algorithm (Pseudo-Smoothed-Wigner-Ville) is massively parallelized, so it can take the full advantage out of the modern multicore systems, like Sonogram‘s FFT core algorithm. A Beta Version of Release 4 can be started directly via the WebStart mechanism. In order to use the PSWV-UltraZOOM function, you must deeply zoom into the time-domain signal with the mouse, or select a small time area. Because the zoom function is so intensive, it works only for very small signal peaces with less than 32768 selected samples. If the selected area is small enough, the UltraZOOM PSWVD-Button will be highlighted with a border and you can start the new UltraZOOM function.