Audio - Processing (13)

Audacity is a multi-track sound recorder and editor with support for most audio formats and sophisticated effects such as noise removal and studio reverb. Users can record live audio, compress or convert file types, as well as cut, copy, splice or mix sounds together.

Cross platform with clients available for Mac and Linux.

Alternatively, Audacity Portable and an outdated X-Audacity are also available.

MKVToolnix is a freeware utility that allows you to create, alter, inspect, etc., video files with the MKV format.You can use MKVToolNix to create, split, edit, mux, demux, merge, extract, or inspect Matroska files.
MKVToolnix program will also work with other video formats including AVI, MPEG, MP4, MPEG, MPEG1/2, h264, and more, as well as some video codecs such as VP9, audio including AAC, FLAC, MP2, MP3, AC3, DTS/DTS-HD, Vorbis and most subtitle formats including SRT, PGS/SUP, VobSub, ASS, and SSA.

Milkytracker is a cross-platform tracking software based on Fasttracker 2 for creating and playing music. It supports the module music formats including 669, AMS, AMF, CBA, DIGI, DSM, FAR, GDM, IMF, MOD, MDL, MTM, MXM, OKT, PLM, PSM, PTM, S3M, STM, ULT, UNI and XM.

Exports to XM, MOD and WAV formats and comes with a built-in sample editor.

Note that although development is ongoing, the Windows version has not been updated since 2013.

Wavosaur is a fast and easy multi-audiowave file editor created for editing audio clips, sound design, mastering, managing and recording. The program is compatible with VSTs and capable of using them in real time to listen to effects-processed audio. It can also monitor audio ports and is MIDI-controllable.

Features include ASIO support, import (MP3, aiff, raw binary, au/snd, ADPCM and so on), MP3 export, statistic/analysis tools (2D/3D spectrum, real time oscilloscope), process tools (resample, bit-depth convert 8, 16, 24, 32 bits, pitch shift, vocal removal, etc.), batch processing and more.

BatchEncoder is a fast, highly configurable conversion tool for a wide array of audio formats. The program can compress or decompress audio using "lossy" formats (like MP3) or "lossless," meaning a perfect copy of the original.

Note that the program is a front-end interface for a variety of tools that the software downloads automatically for you, and then runs them in the background based on the set configuration.

Pazera Free Audio Extractor takes the audio from most major video files without loss of sound quality or converts them to a variety of common audio formats. The program can also behave as a simple conversion tool from one audio format to another (e.g. AAC to MP3).

Some supported formats include (audio) MP3, AAC, AC3, WMA, M4A, FLAC, OGG, WAV, ALAC, WavPack, AIFF; (video) AVI, FLV, MP4, MPG, MOV, RM, 3GP, WMV, VOB, MKV, WebM and OGV.

Note: By default, the program will extract/convert to MP3. Select "Try extract original audio stream" to avoid re-encoding, which is faster but may result in a format that some devices can't read. The program has a number of predefined settings (profiles) specially designed for novice users, but you can also customize audio encoding and output parameters.

MP3Gain is an audio normalization software that helps minimize audio changes from file to file, especially very loud to very quiet. The program analyzes MP3 files and changes the volume without re-encoding or modifying quality. Batch operations are available and changes can be reversed.

wxMP3gain is a cross platform front-end for the MP3gain tool and wxMP3gain Portable version is a container format to help manage settings.

Paul's Extreme Sound Stretch is a program for modifying audio, although its most noted feature is stretching. The program includes the capability for (8x, 50x etc.) sound stretching, as well "spectral smoothing" the sounds to escape the audio artifacts common in other audio editors when dramatically slowing audio. Includes many post-processing effects including filters, pitch/frequency shifters and more. The program imports WAV, OGG and MP3 files and can export to WAV or OGG.

The program can be used as an audio toy or in creating ambient or "screw"-style music.

The Levelator is an easy-to-use audio optimization tool that fixes volume inconsistencies for WAV or AIFF files. Developed specifically for podcast voice and music recordings, it ensures a consistent volume level using both gain optimization and RMS normalization.

Works via drag-and-drop and supports batch operations (dragging multiple files). Clients available for Linux and OSX.