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Sonic Visualiser
Sonic Visualiser

[Image: sv-1.0-notetracker.png]

Sonic Visualiser is an application for viewing and analysing the contents of music audio files. 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.

As 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.

Features 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 contains features for the following:

    Load audio files in WAV, Ogg and MP3 formats, and view their waveforms.
    Look at audio visualisations such as spectrogram views, with interactive adjustment of display parameters.
    Annotate audio data by adding labelled time points and defining segments, point values and curves.
    Overlay annotations on top of one another with aligned scales, and overlay annotations on top of waveform or spectrogram views.
    View the same data at multiple time resolutions simultaneously (for close-up and overview).
    Run feature-extraction plugins to calculate annotations automatically, using algorithms such as beat trackers, pitch detectors and so on.
    Import annotation layers from various text file formats.
    Import note data from MIDI files, view it alongside other frequency scales, and play it with the original audio.
    Play back the audio plus synthesised annotations, taking care to synchronise playback with display.
    Select areas of interest, optionally snapping to nearby feature locations, and audition individual and comparative selections in seamless loops.
    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.
    Export audio regions and annotation layers to external files.

The design goals for Sonic Visualiser are:

    To provide the best available core waveform and spectrogram audio visualisations for use with substantial files of music audio data.
    To facilitate ready comparisons between different kinds of data, for example by making it easy to overlay one set of data on another, or display the same data in more than one way at the same time.
    To be straightforward. The user interface should be simpler to learn and to explain than the internal data structures. In this respect, Sonic Visualiser aims to resemble a consumer audio application.
    To be responsive, slick, and enjoyable. Even if you have to wait for your results to be calculated, you should be able to do something else with the audio data while you wait. Sonic Visualiser is pervasively multithreaded, loves multiprocessor and multicore systems, and can make good use of fast processors with plenty of memory.
    To handle large data sets. The work Sonic Visualiser does is intrinsically processor-hungry and (often) memory-hungry, but the aim is to allow you to work with long audio files on machines with modest CPU and memory where reasonable. (Disk space is another matter. Sonic Visualiser eats that.)
Don't forget to write or click a thank you, because it takes a lot of work to search the files.
Free 50 GB Cloud
Pass if needed: bam4LoFo
update to 3.1


- Add Plugins tab to Preferences dialog, from which you can review the plugin load paths and see which plugins were loaded from which locations, and also customise load paths (though the various path environment variables are still supported).
- Stream the export of audio data and other CSV data so that very large exports don't hang the UI or run us out of memory.
- Ensure vertical scale appears for auto-align layers when there is nothing else to auto-align them to.
- Fix another long-standing Windows-platform wide-char/utf8 conversion problem, with environment variable naming and contents.
- Improve handling of incomplete session loads, i.e. situations where the audio files referred to by a session could not be found - previously the session could be re-saved immediately thus losing the audio reference; now at least we disable Save (enabling only Save As) and show a warning.
- Update pane and layer menu shortcuts so that the waveform/spectrogram/etc shortcuts (Shift+G etc) operate on the source model in the currently-selected pane rather than the main model. This is a backward-incompatible change but is a far more intuitive way for the function to work.
- Use dark background for bright colours in time-value/note/etc. layers as well as e.g. waveforms - this is how it was always "intended to" work, but it is a backward-incompatible change.
- Make "Select All" select the whole span of everything that exists, not just the main model.
- Add horizontal scale to Spectrum layer.
- Improve spacing and labelling of vertical log scales.
- Update build system for better Cap'n Proto version support and to use Repoint for code management in the repository.
- Various other bug fixes.
Don't forget to write or click a thank you, because it takes a lot of work to search the files.
Free 50 GB Cloud
Pass if needed: bam4LoFo
updated to version 3.1.1 for Windows, Mac OS X and Linux.

- Fix failure to record correctly into an empty session with certain audio drivers.
- Fix failure to run LADSPA plugins at all, except with some unusual path layouts.
- Fix failure to silence sonified notes when rewinding backwards or jumping back from a loop endpoint.
- Fix macOS .dmg image so as to use older HFS+ filesystem for compatibility.
Don't forget to write or click a thank you, because it takes a lot of work to search the files.
Free 50 GB Cloud
Pass if needed: bam4LoFo

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