Audio Overview

In addition to the non-backwards-compatible audio extension (ISO/IEC 13818-7), MPEG-2 supports up to five full-bandwidth channels compatible with MPEG-1 audio coding. It also extends the coding of MPEG-1 audio to half sampling rates (16 kHz, 22.05 kHz, and 24 kHz) for improved quality for bit rates at or below 64 kbps per channel.

MPEG-2.5 is an unofficial, yet common, extension to the audio capabilities of MPEG-2. It adds sampling rates of 8 kHz, 11.025 kHz, and 12 kHz.

Copyright Elsevier Inc. 2005 under license agreement with Books24x7

< Previous Excerpt Next Excerpt >