A Mac OSX GUI frontend for open source audio codecs. There is an older Windows version available as well.
Tag Archives: decoder
MAD ~ MPEG Audio Decoder
MAD is a high-quality MPEG audio decoder. It currently supports MPEG-1 and the MPEG-2 extension to lower sampling frequencies, as well as the de facto MPEG 2.5 format. All three audio layers — Layer I, Layer II, and Layer III (i.e. MP3) — are fully implemented.
MAD does not yet support MPEG-2 multichannel audio (although it should be backward compatible with such streams) nor does it currently support AAC.
MAD has the following special features:
- 24-bit PCM output
- 100% fixed-point (integer) computation
- completely new implementation based on the ISO/IEC standards
- available under the terms of the GNU General Public License (GPL)
www.underbit.com/products/mad
sourceforge.net/projects/mad/files
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WavPack ~ Hybrid Lossless Audio Compression
WavPack is a completely open audio compression format providing lossless, high-quality lossy, and a unique hybrid compression mode. For version 5.0.0, several new file formats and lossless DSD audio compression were added, making WavPack a universal audio archiving solution.
In the default lossless mode WavPack acts just like a WinZip compressor for audio files. However, unlike MP3 or WMA encoding which can affect the sound quality, not a single bit of the original information is lost, so there’s no chance of degradation. This makes lossless mode ideal for archiving audio material or any other situation where quality is paramount. The compression ratio depends on the source material, but generally is between 30% and 70%.
The hybrid mode provides all the advantages of lossless compression with an additional bonus. Instead of creating a single file, this mode creates both a relatively small, high-quality lossy file that can be used all by itself, and a “correction” file that (when combined with the lossy file) provides full lossless restoration. For some users this means never having to choose between lossless and lossy compression!
WavPack employs only well known, public domain techniques (i.e., linear prediction with LMS adaptation, Elias and Golomb codes) in its implementation. Methods and algorithms that have ever been patented (e.g., arithmetic coding, LZW compression) are specifically avoided. This ensures that WavPack encoders and decoders will remain open and royalty-free.
www.wavpack.com
github.com/dbry/WavPack
en.wikipedia.org/wiki/WavPack
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ALAC ~ Apple Lossless Audio Codec
The Apple Lossless Audio Codec (ALAC) is an audio codec developed by Apple and supported on iPhone, iPad, most iPods, Mac and iTunes. ALAC is a data compression method which reduces the size of audio files with no loss of information. A decoded ALAC stream is bit-for-bit identical to the original uncompressed audio file.
The Apple Lossless Audio Codec project contains the sources for the ALAC encoder and decoder. Also included is an example command line utility, called alacconvert, to read and write audio data to/from Core Audio Format (CAF) and WAVE files. A description of a ‘magic cookie’ for use with files based on the ISO base media file format (e.g. MP4 and M4A) is included as well.
macosforge.github.io/alac
en.wikipedia.org/wiki/Apple_Lossless
This package contains ALAC code used in foobar2000 / foobar2000 Mobile; derived from Apple’s public ALAC code release.
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Ogg Vorbis ~ Free & Open Audio CODEC
Vorbis is a free and open-source software project headed by the Xiph.Org Foundation. The project produces an audio coding format and software reference encoder/decoder (codec) for lossy audio compression. Vorbis is most commonly used in conjunction with the Ogg container format and it is therefore often referred to as Ogg Vorbis. ~ en.wikipedia.org/wiki/Vorbis
Ogg Vorbis is a completely open, patent-free, professional audio encoding and streaming technology with all the benefits of Open Source.
www.vorbis.com
www.xiph.org/downloads
github.com/enzo1982/vorbis-aotuv-lancer
www.rarewares.org/ogg
www.rarewares.org/ogg-tools
nouturn.com/oggdrop
Ogg Forums At Hydrogen Audio
VorbisGain is a utility that uses a psychoacoustic method to correct the volume of an Ogg Vorbis file to a predefined standardized loudness.
jamailmar
Linux Ogg Vorbis decoder with multi-thread support
sourceforge.net/projects/jamailmar
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FLAC ~ Free Lossless Audio CODEC
FLAC stands for Free Lossless Audio Codec, an audio format similar to MP3, but lossless, meaning that audio is compressed in FLAC without any loss in quality. This is similar to how Zip works, except with FLAC you will get much better compression because it is designed specifically for audio, and you can play back compressed FLAC files in your favorite player (or your car or home stereo) just like you would a MP3 file.
FLAC stands out as the fastest and most widely supported lossless audio codec, and the only one that at once is non-proprietary, is unencumbered by patents, has an open-source reference implementation, has a well documented format and API and has several other independent implementations.
xiph.org/flac
xiph.org/flac/comparison
xiph.org/flac/documentation
xiph.org/flac/download
xiph.org/flac/faq
sourceforge.net/projects/flac
github.com/xiph/flac
en.wikipedia.org/wiki/FLAC
sourceforge.net/projects/flacfrontend
FLAC Development Forum @ Hydrogen Audio
FLAC Test Bench:
wiki.hydrogenaud.io/index.php?title=FLAC_decoder_testbench
Encoders:
FLACCL ~ cue.tools/wiki/FLACCL
References:
www.rfc-editor.org/rfc/rfc9639.html#table13
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XLD ~ Mac CD Player / Ripper
X Lossless Decoder (XLD) is a tool for Mac OS X that is able to decode / convert / play various ‘lossless’ audio files. The supported audio files can be split into some tracks with cue sheet when decoding. It works on Mac OS X 10.4 and later. XLD is Universal Binary, so it runs natively on both Intel Macs and PPC Macs.
tmkk.undo.jp/xld
sourceforge.net/projects/xld
wiki.hydrogenaud.io/index.php?title=XLD
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WMP Tag Plus ~ Extends WMP File Formats
WMP Tag Plus is a plug-in that integrates seamlessly into Windows Media Player to provide library and tagging support for additional music formats. These formats include FLAC, Ogg Vorbis, WavPack, Monkey’s Audio (.ape), Musepack and MPEG-4. Windows Media Player 11 or higher.
bmproductions.fixnum.org
hydrogenaud.io/index.php?topic=80263.0
