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Sonic Visualiser 2.4.1

A versatile and configurable audio analysis tool

by Mike Williams

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License: Open Source
Operating Systems: Linux, Mac OS X, Windows 7 (32 bit), Windows 7 (64 bit), Windows 8, Windows Server, Windows Vista (32 bit), Windows Vista (64 bit), Windows XP
Requirements:
Languages: English
Software Cost: Free
Date Updated: 26 November 2014
Watchlist: Add download to my watchlist
Downloads To Date: 1175
Developer: Sonic Visualiser Team
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Sonic Visualiser 2.4.1
A versatile and configurable audio analysis tool

Sonic Visualiser is an open source application for viewing and analysing audio files.

At first glance, the program looks like many other audio tools. Open an audio file (MP3, OGG or WAV), a standard waveform is displayed, and you can scroll through it by clicking "Play".

You don't have to live with a single waveform, though. Sonic Visualiser can add more, perhaps giving separate views for the left, right and combined channels. There are spectrogram, melodic range, peak frequency and spectrum views, again based on your preferred channels, and you can display and combine as many as you need.

Each pane is exceptionally configurable: there are multiple channel views (Separate, Mean, Butterfly), scale options (dB, Linear, Meter), gain, pan and balance tweaks, amongst others.

This means you're able to view the same audio data in many different ways. Click "Play" and each pane displays its own custom view on the current track. Support for time-stretch playback (slowing down or speeding up while retaining a synchronised display) also helps you examine areas of interest.

Sonic Visualiser can then annotate your files by adding labelled time points, segments, point values and curves, and optionally overlaying these later.

And if this isn't enough, the program can be extended further with assorted free Vamp plugins. As we write, these include beat trackers; tempo and key estimators; pitch, tempo and note trackers; harmony and chord extraction; timbral and rhythmic similarity estimators, and plenty more.

Version 2.4.1 is a maintenance release.

Verdict:

Sonic Visualiser is a powerful and extremely configurable audio analysis tool. Don't be intimidated by the program's advanced capabilities, though - it's surprisingly easy to use, and you'll pick up the basics very quickly.

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Spotlight: Free Full Software

Spektrel Art 1.0.0

Free Full Commercial Software

Spektrel Art is a stand-alone program and Photoshop plugin which transforms digital photos into "magical art that glimmers and gleams with intersecting lines of tapered light".

What does that mean? Essentially it applies a configurable mix of effects, enhancing edges, smoothing backgrounds and emphasizing colours. Take a look at the thumbnail for one example, and the official product page has more.

Spektral Art works much like any similar tool. Open an image, click one of the thumbnails to apply a particular preset, or click a few buttons and drag some sliders to fine-tune the results.

There's surprising scope for variation, too. For example, just switching from the "Light" to "Dark" theme can transform a bright and friendly image into something dark and sinister, at least in some cases (results vary depending on the source image).

Please note, the demo version doesn't allow images to be saved.

SPECIAL OFFER: as we write, the developer is offering Spektral Art for free. The offer expires August 29th. Please note that you must provide your name, address and phone number to receive your free license.

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