The AnalyserNode interface represents a node able to provide real-time frequency and time-domain analysis information. It is an AudioNode that passes the audio stream unchanged from the input to the output, but allows you to take the generated data, process it, and create audio visualizations.
SquareTangle is a virtual art and perrformance company founded by John McCormick and Adam Nash, based in Melbourne Australia, specialising in realtime 3d, motion capture, dance, choreography, music, game and sound art.
FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of arbitrary input size, and of both real and complex data (as well as of even/odd data, i.e. the discrete cosine/sine transforms or DCT/DST). We believe that FFTW, which is free software, should become the FFT library of choice for most applications.
FFTExplorer is a free (GPL) Linux (Xwindows GUI-based) utility that performs spectral analysis on real-time data from a sound card or other source, and can analyze the spectra of various sound file types. It can also accept data from many kinds of applications in plain-text form by way of the "named pipe" feature of Linux (example code provided in the documentation).
K. SAHNOUN, and N. BENABADJI. International Journal of Computational Science, Information Technology and Control Engineering (IJCSITCE), 1 (1):
17- 23(April 2014)
H. Hassanieh, P. Indyk, D. Katabi, and E. Price. Proceedings of the 44th symposium on Theory of Computing, page 563--578. New York, NY, USA, ACM, (2012)
H. Hassanieh, P. Indyk, D. Katabi, and E. Price. Proceedings of the Twenty-Third Annual ACM-SIAM Symposium on Discrete Algorithms, page 1183--1194. SIAM, (2012)