Open Source Data Visualization Software

xoscope is a digital oscilloscope using input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware. Includes 8 signal displays, variable time scale, math, memory, measurements, and file save/load.

Free open source GPL instrument / musical chromatic tuner (like an electronic guitar tuner) for Windows, Windows Mobile, & Pocket PC. Displays name of note played & accurate indication of whether pitch is sharp, flat, or exact (relative to 440Hz A).

wavesurfer.js is a customizable audio waveform visualization, built on top of Web Audio API and HTML5 Canvas. With wavesurfer.js you can create anything from an HTML5 audio player to a sophisticated DJ application. wavesurfer.js works only in modern browsers supporting Web Audio. It will fallback to Audio Element without graphics in other browsers (IE 11 and lower). You can also try wavesurfer.swf which is a Flash-based fallback. The audio will start playing as you press play. A thin line will be displayed until the whole audio file is downloaded and decoded to draw the waveform. Web Audio needs the whole file to decode it in the browser. You can however load pre-decoded waveform data to draw the waveform immediately. wavesurfer.js runs on modern browsers supporting Web Audio, including Firefox, Chrome, Safari (desktop and mobile) and Opera.

MusicDNA is a music player unlike any other. It is an Android music player that renders beautiful DNA (visualization) of the currently playing music. It does this through the use of the Visualizer Class, and is inspired by paullewis's music-dna. It uses the FFT Data supplied by the Visualizer class of Android , calculating the Amplitude at that exact moment and using this to plot the DNA. MusicDNA fuses the functionality of traditional music players with stunning visualizations. In this way it captivates not only the sense of hearing but the sense of sight as well. MusicDNA's player allows for playing both local music as well as streamed music from SoundCloud.

Quickplot is a fast interactive 2D plotter with infinite zooming, value picking, pipe input, and unlimited plots displayed. Quickplot is meant for looking at your data quickly and of secondary importance is making static pictures of your data.

The PAMGUARD project develops software to help detect, locate and classify marine mammals using Passive Acoustic Monitoring. This project is being migrated to github at https://github.com/PAMGuard. Please go there for the latest updates. thank you sourceforge for hosting us for all these years.

Crispy Plotter is a function graph plotter for mathematical functions, featuring high drawing speed and an intuitive interface that is fun to use.

eXtace is a 3D audio visualization tool (or eye candy depending on how you look at it). eXtace requires ESD (Esound) for its sound input source. It performs a FFT (fast fourier transform) on audio and displays it via various graphical modes.

Software oscilloscope using Python and tkinter. Supports multiple sources: socket, file, audio, USB. Displays data by samples, time or frequency. Scales the input automatically or manually.

qliss3d renders 3d-Lissajous-figures (figures made of a different sine functions for each dimension) with a Qt interface. You can look at the figures from any viewing position you like and even "listen" to the sound of the figures.

FrAid(FRactal AID) is an interface to Java, allowing it to proc. math. data(functions/equations). A compl. standalone system utilizing the FrAid prog. lang. is available(no need to be Java programmer to use it!). Use instead of Matlab. High res. graphics

Oscilloscope software for Linux and X11. It uses sound device (/dev/dsp) as input source. Two channel (stereo), variable sampling frecuency, time and V scales. Variable trigger mode, level and channel . Nice xforms GUI. Includes buffer circuit scheme (wi

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.

HCI for audiovisual live performance exploiting physical computing. Transform your standard musical instrument - electric bass, guitar, violin, piano etc - in an augmented tool, an audiovideo controller without exploiting any specific ext. hardware.

A command-line tool for applying the continuous wavelet transform with respect to predefined wavelets to sampled data.

An iOS and macOS audio visualization framework built upon Core Audio useful for anyone doing real-time, low-latency audio processing and visualizations. I've designed six audio components and two interface components to allow you to immediately get your hands dirty recording, playing, and visualizing audio data. These components simply plug into each other and build on top of the high-performance, low-latency AudioUnits API and give you an easy to use API written in Objective-C instead of pure C. EZAudio was designed to work transparently across all iOS and OSX devices. This means one universal API whether you're building for Mac or iOS. For instance, under the hood an EZAudioPlot knows that it will subclass a UIView for iOS or an NSView for OSX and the EZMicrophone knows to build on top of the RemoteIO AudioUnit for iOS, but defaults to the system defaults for input and output for OSX.

This project is a framework (i.e., library) for Mac OS X applications to link in. It provides plots of data together with the supporting machinery (objects inheriting from NSDocument, for example) that applications can use to manipulate the plots.

A KDE instrument tuner. Displays the pitch and amplitude of audio signals.

Advanced detection, classification and localization (DCL) of marine mammals and passive acoustic monitoring (PAM). Code is being developed as Matlab routines, interfaces for Ishmael (http://www.bioacoustics.us/ishmael.html), and in other formats.

MouseGestureComposer is a graphical partition editor for visual artists and musicians. Basic elements are mouse movements, placed on a timeline segmented in measures, similar to classical music. Uses processing.org. Developed by numediart.org. A video tutorial is available here: http://vimeo.com/33442844 Main developper: François Zajéga - http://www.frankiezafe.org

Musical Notation System Using a GUI with a built in text editor, one can create a score with the appropriate notations. All musical notations are then transformed into a graphical representation and can be exported into various formats (pdf, ps, eps).

NATSpectrum is a skinnable Spectrum Analyzer, Guitar Tuner, and Quick Volume Control. NS visualization mimics WinAMP 2.x style. NS is written in pure Win32 C++ and uses DirectDraw and DirectSound. (FFT, Frequency, Mixer, Microphone, DirectX, PNG, Record)

Pocket Oscilloscope turns your PocketPC into a realtime Oscilloscope using the microphone.

Pumilio is a web-based sound analysis and archive system for almost any kind of sound file with tools to see the spectrogram of the sound, select regions for further analysis and insertion in a database, filtering, and many other manipulations.

Qwav is a waveform extension to the Qt GUI application framework from Trolltech AS of Norway. It's a C++ library that provides a mono and stereo waveform widget and more.