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The Pure Data (short Pd) project on SourceForge unifies the extensions (or externals) written for the Pure Data Graphical Computer Music System written by Miller Puckette with contributions from many others.
Free DJ software: everything you need to perform live mixes
Mixxx is a free and open-source DJ software that enables DJs to create professional live mixes using digital music files. It runs on Windows, macOS, and Linux, making it accessible to DJs across all major platforms. Mixxx supports both beginners using just a laptop and experienced DJs using advanced hardware setups. Built-in BPM and key detection help DJs quickly find compatible tracks and achieve smooth transitions. With strong community-driven development, Mixxx is continuously improved by...
Analyze and reassemble TS (mpeg transport stream) fragments
This program allows to detect, analyze and reconnect fragments from deleted TS (MPEG transport stream) files. You can use this to recover files from a hard disk after a crash or an erroneous deletion.
Harmonia is a tool for analyzing music scores exported to MIDI or MusicXML format. It allows you to detect voices inside a single MIDI track (eg. live piano recording), main themes (and their motifs), harmonic key and chord interpretation.
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Yet Another Audio Feature Extractor is a toolbox for audio analysis. Easy to use and efficient at extracting a large number of audio features simultaneously. WAV and MP3 files supported, or embedding in C++, Python or Matlab applications.
ManyEars implements real-time microphone array processing to perform sound source localisation, tracking and separation. It was designed for mobile robot audition in dynamic environments.
NOTE:
Development will continue on github :
https://github.com/introlab/manyears
A C++ library and Python module for audio synthesis featuring dynamic digital filters. Nsound lets you easily shape waveforms and write to disk or plot them. Nsound aims to be as powerful as Csound but easy to use.
Rakarrack is a stereo digital effects processor for Linux with jack support. Standard line-up of nearly 40 effects modules include Equalizers, Reverbs, Echo, Flange, Chorus, Distortions, WahWah, Vocoder, and other filters and processing modules.
NOTE: The library code compatible with audacity has migrated to
https://github.com/claytonotey/libsbsms
A subband sinusoidal modeling library/command line tool/gui for time stretching and pitch scaling audio. Download the sbsms package for the source or the win32/mac wxSBSMSPlayer package for the gui binaries.
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MP3val is a small, high-speed tool for MPEG audio files validation and (optionally) fixing problems. It was primarily designed for verification of MPEG 1 Layer III (MP3) files, but supports also other MPEG versions and layers.
NOTE: Project is looking for a new maintainer
MPEG Maaate is a platform to do compressed-domain analysis of mpeg audio files (mpeg-1 layers 1,2,3), which includes mp3 files. The library has a bunch of filters which are implemented as plugins, such as histogram, pauseRate, signalMagnitude etc.
(last successful compile was probably round 2005)
A tool for Native Instrument's Traktor which automates tagging WAV files purchased on popular dance music sites. Currently supported sites: www.trackitdown.net, Juno Download, and Beatport.
KGuitar is powerful KDE-based music tabulature editor with support of guitar, drums, classic note scores, MIDI synthesizer output, chord, scales, modes, melody and rhythm construction and analysis tools, lots of tab effects, Guitar Pro files import.
DTMF detector library and/or application that reads in the specified audio file and returns/outputs whether DTMF detected and/or list of detected digits. May have GUI and command line interfaces.
Extremely Lightweight Beat Detection Algorithm - BeatDetektor uses a very simple statistical model designed from scratch by myself to detect the BPM of music and provides real-time feedback useful for visualization and synchronization.
Tune is a note/chord detecting program for use with guitars, pianos, or voices. It uses an FFT to analyze incoming sound and computes the root frequency.
Mutelesser is an audio silence detection tool, for broadcast radio stations. Mutelesser detects lack of audio for a certain amount of time, and triggers actions that inform technical staff or start a backup play list, until audio source is restored.
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 with a highly interactive GUI to manipulate and
display the spectral data.
Katmus is an application for manual music transcription. It features a score editor synchronized with a wave file, time stretching, project manager and lots of other features.