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Overview

The LC SBC codec is targeted at Bluetooth applications, and is the only mandatory codec for applications that implement the Advanced Audio Distribution Profile (A2DP). The codec enables low-latency, CD-quality stereo audio streaming over Bluetooth or other wireless connections. Target applications are use cases that stream music over Bluetooth to wireless headsets. Such headsets can be used in conjunction with mobile phones, but also inside the home with Bluetooth enabled PCs, Media Servers or Set Top Boxes. The LC SBC encoder in that case runs on the device that has stored or receives the music (e.g. mobile phone or Set Top Box), and the LC SBC decoder runs on the Bluetooth SOC in the headset.

Benefits

Codecs are Fully Compliant: Bit exact thorough testing against standard and test vectors Codecs are Certified: E.g. codecs went through Dolby, Microsoft certification Robustness - no hanging: Codecs are thoroughly tested including floating inverted bits tests Error resilience: Dependent on standard, codecs fill gaps introduced by transmission errors Codecs developed in-house: Issues that may arise are quickly handled by Virage Logic?s in-house DSP experts Tested using a large suite of bitstreams: From standard holder, in-house generated, live generated, from customers, etc.

Features

Implements Low Complexity Sub-band Coding as defined by Bluetooth Advanced Audio Distribution Profile (A2DP). Supports all features defined by A2DP v12 specification Algorithm uses 4 or 8 sub-bands, an adaptive bit allocation algorithm, and adaptive block PCM quantizers Up to 2 audio channels mono, dual channel, stereo, and joint stereo modes Sample rates of 16 / 32 / 44.1 / 48 kHz 16-bit PCM input / output SNR and Loudness bit allocation modes Compliant to Bluetooth specifications

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