Developed by Chris Cannam of the Centre for Digital Music at Queen Mary, University of London (with some input from CHARM), this free program is a highly customisable playback and visualisation environment that includes such features as variable-speed playback, looping, and the ability to annotate the recording, for instance to identify specific points of reference you can also use the annotation facility to tap to the beats and so generate tempo data which can be displayed on screen or exported to a spreadsheet program.Ī particularly attractive feature is the ability to synchronise a number of recordings so that you can jump from one to the corresponding point in another. Windows and OS/X users can get limited support using the Audacity VST Enabler, and Linux users can try dssi-vst. “Sonic Visualiser cannot support VST plugins directly because Steinberg’s VST license is incompatible with Sonic Visualiser’s GPL license. – Export audio regions and annotation layers to external files. – Time-stretch playback, slowing right down or speeding up to a tiny fraction or huge multiple of the original speed while retaining a synchronised display. – Select areas of interest, optionally snapping to nearby feature locations, and audition individual and comparative selections in seamless loops. – Play back the audio plus synthesised annotations, taking care to synchronise playback with display. – Import note data from MIDI files, view it alongside other frequency scales, and play it with the original audio. – Import annotation layers from various text file formats. – Run feature-extraction plugins to calculate annotations automatically, using algorithms such as beat trackers, pitch detectors and so on. – View the same data at multiple time resolutions simultaneously (for close-up and overview). – Overlay annotations on top of one another with aligned scales, and overlay annotations on top of waveform or spectrogram views. – Annotate audio data by adding labelled time points and defining segments, point values and curves. – Look at audio visualisations such as spectrogram views, with interactive adjustment of display parameters. – Load audio files in WAV, Ogg and MP3 formats, and view their waveforms. Sonic Visualiser contains features for the following: The aim of Sonic Visualiser is to be the first program you reach for when want to study a musical recording rather than simply listen to it.Īs well as a number of features designed to make exploring audio data as revealing as possible, Sonic Visualiser also has powerful annotation capabilities to help describe what you find, and the ability to run automated annotation and analysis plugins.įeatures include sophisticated spectrogram views multi-resolution waveform and data displays manual annotation of time points and curves measurement capabilities from spectrogram and spectrum playback at any speed looping and playback of discontiguous selections ability to apply standard audio effects and compare the results with their inputs and support for onset detection, beat tracking, structural segmentation, key estimation and many other automated feature extraction algorithms via Vamp audio analysis plugins. Sonic Visualiser is an application for viewing and analysing the contents of music audio files.
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