Practical Recording Techniques, 7th Edition

Audio Glossary

AAC (MPEG Advanced Audio Coding)

A data-compression scheme that offers better sound quality than MP3 at the same bitrate. Many listeners claim that AAC files made at 128 kbps sound like the original uncompressed audio source. What’s more, AAC supports multichannel audio and a wide range of sample rates and bit depths. Digital rights management technology is also used with this format to help control the copying and distributing of music. iTunes requires lossless file uploads but produces AAC files made at 256 kbps.

AAX (Avid Audio Extension)

An Avid plug-in format used in Pro Tools 10. It’s 64-bit ready and lets you use native or DSP processing.

ABR

Average bitrate, a data-compression scheme that is a compromise between CBR (constant ...