A selection of formats that you might encounter when processing and encoding audio is enumerated in Table K-1.
This is an old legacy codec for use in telephony applications. The μ-Law codec is widely available on UNIX-based systems. It may be worth being able to decode this, but it has few applications for an encoder nowadays.
|a-Law||A variant on the μ-Law codec also used for telephony. The a-Law codec is of little use now that we have better codecs available. Being able to decode it may gain access to some legacy audio files.|
|AAC format||Part of the MPEG-4 standard but has been superseded by AAC+. This was originally developed as part ...|