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ffmpeg-normalize – open-source utility to normalise audio files in batch processing using Python and the FFmpeg framework; EBU R 128 Normalizer – component for the freeware player foobar2000 to analyse and normalise audio files during playback
ReplayGain is a proposed technical standard published by David Robinson in 2001 to measure and normalize the perceived loudness of audio in computer audio formats such as MP3 and Ogg Vorbis. It allows media players to normalize loudness for individual tracks or albums.
Another type of normalization is based on a measure of loudness, wherein the gain is changed to bring the average loudness to a target level. This average may be approximate, such as a simple measurement of average power (e.g. RMS), or more accurate, such as a measure that addresses human perception e.g. that defined by EBU R128 and offered by ReplayGain, Sound Check and GoldWave.
FFmpeg has a native WavPack encoder, which may be combined with software like GNU parallel to use multiple CPU cores to quickly transcode other lossless formats into WavPack, and from WavPack to any format that FFmpeg supports, without the need for additional software. However, FFMpeg's encoder is somewhat limited.
MP3Gain is an audio normalization software tool. The tool is available on multiple platforms and is free software. It analyzes the MP3 and reversibly changes its volume. The volume can be adjusted for single files or as album where all files would have the same perceived loudness. It is an implementation of ReplayGain. In 2015 Debian and Ubuntu ...
FFmpeg (decoding only), [7] FFmpeg with VisualOn libraries, Android (decoding only) [8] voice recording, audio No No No Yes No G.723.1: ITU-T 1996-03 G.723.1 (05/06) Non-free Various proprietary VoIP software FFmpeg voice recording: No Yes No Yes No G.726: ITU-T 1990-12 Free Various proprietary VoIP software FFmpeg, Ekiga and other VoIP ...
The Windows Sound System supported ADPCM in WAV files. [6] As of 31 October 2024, FFmpeg include 50 built-in ADPCM decoders and 16 encoders, some catering to niche purposes. For instance, "ADPCM Westwood Studios IMA" (adpcm_ima_ws) encodes and decodes the audio of the old Command & Conquer video games. [7] [8]
multi-track audio recorder and editor GPL-2.0-or-later: Audacity: Dominic Mazzoni Yes Yes Yes Yes wxWidgets multi-track audio recorder and editor GPL-2.0-or-later, CC BY 3.0 (documentation) Ecasound: Yes Yes Yes Yes limited support through Cygwin: command line audio recorder GPL-2.0-or-later: Gnome Wave Cleaner: Jeff Welty Yes No No GTK+ audio ...