 
 <prompt> How channel coding take increase for MPEG-2 Part 3? Given di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Further work on MPEG audio finish for 1994 as part of the second suite of MPEG standards, MPEG-2, wey dem formally know as international standard ISO/IEC 13818-3 (a.k.a. MPEG-2 Part 3 or backwards compatible MPEG-2 Audio or MPEG-2 Audio BC), wey dem first publish for 1995. MPEG-2 Part 3 (ISO/IEC 13818-3) define additional bit rates and sample rates for MPEG-1 Audio Layer I, II and III. The new sampling rates na exactly half of wetin dem originally define for MPEG-1 Audio. This reduction for sampling rate dey cut the available frequency fidelity by half and also cut the bitrate by 50%. MPEG-2 Part 3 still improve MPEG-1 audio by allowing the coding of audio programs wey get more than two channels, up to 5.1 multichannel. 