IBM - CVUT Student Research Projects Compression Algorithm for Wireless Microphone Michal Přibyl

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Presentation transcript:

IBM - CVUT Student Research Projects Compression Algorithm for Wireless Microphone Michal Přibyl

IBM - CVUT Student Research Projects 2 Goals Compare available audio compression algorithms Choose suitable codec for dsPic30 i. e. compression with low complexity Implement this audio compression library in C for dsPic30 and PC

IBM - CVUT Student Research Projects 3 Wireless Microphone Specification Sampling rate: 16 kHz Data width: 16 bits Transmitting protocol: Bluetooth

IBM - CVUT Student Research Projects 4 Wireless Microphone Architecture by Petr Mohelský Codec + Microprocessor BT modul RS 232 PC USB BT Dongle (COM 4) BT signal Serial comunication software Sound software Sound card Microphone

IBM - CVUT Student Research Projects 5 Accomplished goals Comparison Due the algorithm complexity was chosen Sub Band Codec (SBC) defined by the Advanced Audio Distribution Profile Specification v1.0 Implementation Finished lower level of SBC consisting of ADPCM compression.

IBM - CVUT Student Research Projects 6 Thank you for your attention