aacPlus Decoder / Encoder
The aacPlus Encoder supports all kind of codings, that are needed in the mobile audio market. Full Track Music Download can easily be provided, using the DOBBIN system for the coding process. The aacPlus encoder delivers streaming and downloadable audio near CD-quality stereo at 32 kbps, excellent quality stereo at 24 kbps, and good quality for mixed content even below 16 kbps mono. This level of efficiency fundamentally enables new applications in the markets of mobile and digital broadcast.
Features
- MP4 / M4A (MPEG 4 and MPEG 4 Audio)
- 3GPP / 3GP
- ISMA compliant MP4 Hinting
- 3GPP Hinting
- RTSP Streaming
- 3GP Streaming with Hint track
- Meta Tagging - iTunes, ID3v2.3, 3GP
- AAC, AAC+, HE-AAC, aacPlus
Example applications
- 3G and WiFi Audio and A/V services
- Internet audio for streaming and download
- Digital Radio
- Digital Satellite and Cable
- Portable players
Technical information
The aacPlus codec family is fully standardized in MPEG-4 and delivers CD quality stereo at 48 kbps and 5.1 surround sound at 128 kbps.
MPEG-4 aacPlus is the combination of three MPEG technologies comprising Advanced Audio Coding (AAC), coupled with Coding Technologies' Spectral Band Replication (SBR) , and Parametric Stereo (PS) technologies. SBR is a unique bandwidth extension technique which enables audio codecs to deliver the same quality at half the bit rate. PS significantly increases the codec efficiency a second time for low bit rate stereo signals.
