AacPlus MPEG-4 aacPlus

Oneof the speech compression systems which are used with animated picture compressed type MPEG-4. It was standardized in 2003Marchby MPEG.

Until recently,AAC system andthe CodingTechnologies corporation which are adopted with MPEG developed "SBR" (Spectral Band Replication) with the system of combining technology,can reproducethe equal sound quality at approximately half capacity of AAC. Be able to reproduce5.1ch????? with 128kbps, you say thatthe sound quality like CD can be reproduced with 48kbps