Tag Archives: FFT

Partiels ~ Audio Analysis Application

Posted by tom2tec on

Partiels is an audio analysis application that allows you to explore the content and characteristics of sounds.

Features:

Partiels allows analysis of one or several audio files using Vamp plug-ins loading data files, visualizing, editing, organizing, and exporting the results as images or text files that can be used in other applications such as Max, Pure Data, Open Music, etc.

  • Windows, Mac & Linux support
  • Multiformat support
  • Multichannel support
  • Multiaudiofile support
  • Analyzing audio with Vamp plug-ins
  • Visualizing results as spectrogram, lines, and markers
  • Textual and graphical editing of results 
  • Organizing and ordering analyses in groups
  • Exporting results to PNG, JPEG, CSV, LAB, JSON, CUE, REAPER & SDIF formats
  • Loading results from CSV, LAB, JSON, CUE & SDIF formats
  • Batch processing
  • Command line interface to analyze, export, and convert results
  • Consolidating documents for sharing

Alongside Partiels, a wide range of analyses based on audio engines developed at IRCAM and outside are ported to Vamp plug-ins. These plug-ins allow you to perform FFT, LPC, transient, fundamental, formant, tempo, TTS and many other analyses. You can also find a large number of analysis plug-ins on the Vamp plug-ins website.

github.com/Ircam-Partiels
www.vamp-plugins.org

sndpeek ~ Realtime Audio Visualizer

Posted by tom2tec on

sndpeek is just what it sounds (and looks) like:

  • real-time 3D animated display/playback
  • can use mic-input or wav/aiff/snd/raw/mat file (with playback)
  • time-domain waveform
  • FFT magnitude spectrum
  • 3D waterfall plot
  • lissajous! (interchannel correlation)
  • rotatable and scalable display
  • freeze frame! (for didactic purposes)
  • real-time spectral feature extraction (centroid, rms, flux, rolloff)
  • available on MacOS X, Linux, and Windows under GPL
  • part of the sndtools distribution.

www.gewang.com/software/sndpeek
soundlab.cs.princeton.edu/software/sndpeek
www.cs.princeton.edu/sound/software/sndpeek/look

Online Spectrum Analyzer & Spectrogram Using Custom FFT

Posted by tom2tec on

Resources:

en.wikipedia.org/wiki/Spectrum_analyzer

FreqTweak ~ Spectral Manipulation & Display

Posted by tom2tec on

FreqTweak is a tool for FFT-based realtime audio spectral manipulation and display. It provides several algorithms for processing audio data in the frequency domain and a highly interactive GUI to manipulate the associated filters for each. It also provides high-resolution spectral displays in the form of scrolling-raster spectrograms and energy vs frequency plots displaying both pre- and post-processed spectra.

It is an extremely addictive audio toy, but I hope it has value for serious audio work too (sound design, etc). The spectrum analysis is pretty useful in its own right.

freqtweak.sourceforge.io