S_TOOLS-STx - Intelligent Sound Processing, is an acoustic speech and signal processing application for Windows.The software is actively being developed at the Acoustics Research Institute in Vienna, and is used in a variety of acoustic fields around the world. For non-commercial, scientific and educational purposes, we offer S_TOOLS-STx free for download.
Signal Processing
S_TOOLS-STx incorporates a sophisticated sound analysis and signal processing package:
frequency analysis based on Fast Fourier Transformations (FFT)
spectrum estimation methods, e.g. autoregressive (AR), Pseudo-Wigner distribution
fundamental frequency and formant frequency extraction, e.g. cepstrum, linear predictive coding (LPC)
digital filtering
Graphical Analysis
S_TOOLS-STx can display signal analysis in the following forms:
spectrogram/sonogram
waveform
waterfall plot
function plot
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