Category Archives: Analysis

Audio analysis software

mp3guessenc ~ Analyze Audio mpeg Files

Posted by tom2tec on

… a small utility for analysis of audio mpeg files and detection of the encoder used (when layer III).

Further, mp3guessenc can detect many details about the mpeg audio stream and print out lots of useful information.

Supported streams are mpeg 1, mpeg 2 and unofficial mpeg 2.5 – layer I, layer II and layer III of course. Xing tag, lame tag, VBRI tag, Id3 tags (both 1.x and 2.x), APE tags (both v1 and v2), Lyrics3 tags (both v1 and v2) and MusicMatch tag (any version) are detected as well.

Features:

  • scan mpeg 1/2/2.5 streams, layer I/II/III
  • guess encoder used (lame/gogo/xing/helix/fhg(new, old and ancient)/blade)
  • also detects mp3pro and mp3surround streams (even with OFL)
  • support for large files (up to 2^60 bytes!)
  • free format streams supported
  • full statistics for the stream (audio mode, frame histogram, block usage, ancillary data)
  • crc16 verification
  • vbr tags by xing/lame + VBRI tag by fhg
  • detection of ID3 v1/v2 + APE tags + Lyrics3 tags + MusicMatch tag
  • verify integrity of lame tag

mp3guessenc

mp3guessenc.sourceforge.net
sourceforge.net/projects/mp3guessenc

JAMin ~ JACK Mastering Interface

Posted by tom2tec on

JAMin is the JACK Audio Connection Kit (JACK) Audio Mastering interface. JAMin is an open source application designed to perform professional audio mastering of stereo input streams. It uses LADSPA for digital signal processing (DSP). JAMin is licensed under the GPL.

Features:

  • Linear filters
  • JACK I/O
  • 30 band graphic EQ
  • 1023 band hand drawn EQ with parametric controls
  • Spectrum analyser
  • 3 band peak compressor
  • Lookahead brickwall limiter
  • Multiband stereo processing
  • Presets and scenes
  • Loudness maximizer

jamin

jamin.sourceforge.net

WaveSurfer ~ Visualize & Manipulate Sound

Posted by tom2tec on

WaveSurfer is an open source tool for sound visualization and manipulation. Typical applications are speech / sound analysis and sound annotation / transcription. WaveSurfer may be extended by plug-ins as well as embedded in other applications.
Features:

  • Customizable – users can create their own configurations. Localization support.
  • Extensible – new functionality can be added through a plugin architecture.
  • Embeddable – WaveSurfer can be used as a widget in custom applications.
  • Transcription file formats – reads, and writes HTK (and MLF), TIMIT, ESPS/Waves+, and Phondat. Support for encodings and Unicode.
  • Multi-platform – Linux, OSX & Windows.
WaveSurfer

sourceforge.net/projects/wavesurfer
en.wikipedia.org/wiki/WaveSurfer

Raven Lite ~ Visualize Sounds

Posted by tom2tec on

Raven Lite is a free cross-platform software program that lets users record, save and visualize sounds as spectrograms and waveforms. Raven Lite is intended for students, educators, and hobbyists and can be used for learning about sounds, as an aid in birdsong recognition, and in musical instruction.

www.birds.cornell.edu

ocenaudio ~ Powerful, Fast & Easy Audio Editor

Posted by tom2tec on

ocenaudio is a cross-platform, easy to use, fast and functional audio editor. It is ideal for people who need to edit and analyze audio files without complication. ocenaudio also has powerful features that will satisfy more advanced users including VST plugin support.

ocenaudio editor image

www.ocenaudio.com

DFasma ~ Compare Audio Files In Time & Frequency

Posted by tom2tec on

DFasma is free open-source software which is used to compare audio files in time and frequency. The comparison is first visual, using waveforms and spectra. It is also possible to listen to time-frequency segments in order to allow perceptual comparison. It is basically dedicated to analysis. Even though there are basic functionalities to align the signals in time and amplitude, this software does not aim to be an audio editor.

Features:

  • Can load about 25 different audio formats (thanks to libsndfile or libsox).
  • Shows spectrogram, amplitude, phase spectra and group delay.
  • Can play a filtered sound given a selected frequency band.
  • Rectification of the spectrogram tilt (cepstral lifting).
  • Can create and edit segmentation files.
  • Can create and edit fundamental frequency (F0) files (thanks to REAPER).
  • Runs under Linux, Mac OSX and Windows.

dfasman - ss1.4_2comparison

gillesdegottex.github.io/dfasma

Baudline ~ Visual Signal Analyzer

Posted by tom2tec on

Baudline is a time-frequency browser designed for scientific visualization of the spectral domain. Signal analysis is performed by Fourier, correlation, and raster transforms that create colorful spectrograms with vibrant detail. Conduct test and measurement experiments with the built in function generator, or play back audio files with a multitude of effects and filters. The baudline signal analyzer combines fast digital signal processing, versatile high speed displays, and continuous capture tools for hunting down and studying elusive signal characteristics.

Explore, Analyze, and Discover.

baudline

Linux / MacOS / Unix

Website
Downloads
Twitter
Wikipedia

Baudline Mystery Signal Of The Month

Every month a new mystery signal is posted. Can you identify it?

Monthly Mystery Signal

KeyFinder ~ Musical Key Song Analyser

Posted by tom2tec on

KeyFinder is an open source key detection tool, for DJs interested in harmonic and tonal mixing. It’s intended to be very focused: no library management, no track suggestions, no media player. Just a fast, efficient workflow tool. It supports a huge range of codecs thanks to LibAV, and writes to metadata tags using TagLib.

keyfinder

www.ibrahimshaath.co.uk/keyfinder
github.com/ibsh/is_KeyFinder

Tau Analyzer ~ Audio Source Verification

Posted by tom2tec on

Tau Analyzer is a free program, which can help you to distinguish with reasonable accuracy the original studio-based CDs from poor quality fakes, that have been “reconstructed” using a lossy audio source, such as mp3. Using this program you can check the authenticity of your purchased or borrowed music CDs.

Tau Analyzer features an intuitive user interface, allowing users to work directly with audio CDs, and has some additional functions such as spectrum and frequency analyzers, ATIP and ISRC data readers, etc.

tau_analyzer_main_window

tausoft.org

Spectro ~ Audio File Analyzer

Posted by tom2tec on

Spectro is a freeware audio file analyzer for Windows. Currently capable of reading FLAC, APE, MP3 and WAV files. Spectro lets you view vital data about compressed audio files and creates a spectrogram of the wave data. This allows you to quickly and easily spot quality issues with a file and also look for transcodes.

spectro

spectro.enpts.com

Sonic Visualiser ~ View & Analyze Audio Files

Posted by tom2tec on

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.

We hope Sonic Visualiser will be of particular interest to musicologists, archivists, signal-processing researchers and anyone else looking for a friendly way to take a look at what lies inside the audio file.

sv-3.0-win-thumb

www.sonicvisualiser.org
www.sonicvisualiser.org/download
www.vamp-plugins.org/download
Introduction Video

Lacinato ABX ~ Comparing Track Quality

Posted by tom2tec on

Lacinato ABX is the only cross-platform ABX and shootout blind testing software for audio. It allows double-blind ABX testing of audio files (seeing if you can tell which file is being played), as well as “shootouts” (picking your favorite from a shuffled, anonymized list). Or you can just use it as a convenient way to switch between files (maintaining the current play position, if you like.

Lacinato ABX

Website
Web Service ~ online version
ABX Testing ~ Wikipedia