Design
SBC supports mono and stereo streams, certain sampling frequencies up to 48000 Hz and maximum bit rates of 198 kb/s for mono and 345 kb/s for stereo streams. It uses 4 or 8 subbands, an adaptive bit allocation algorithm in combination with an adaptive block PCM quantizers. Frans de Bont has based the SBC audio codec on his earlier work, and – in parts – on the MPEG-1 Audio Layer II standard. In addition, the SBC is based on the algorithms described in the EP-0400755B1. The patent owners wrote that they allow the free usage of SBC in Bluetooth application, with the view to boost the use of this technology. All applications outside Bluetooth are however not free. The patent expired June 2, 2010.
Read more about this topic: SBC (codec)
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