Digital Speech Decoder Project (DSD)

Jared Szechy's DSD Project

The original project by Jared Szechy written in 2014 is https://github.com/szechyjs/dsd
DSD is able to decode several digital voice formats from discriminator tap audio and synthesize the decoded speech. Speech synthesis requires mbelib, which is a separate package. The DSD Wiki has lots of additional information about DSD including build instructions and answers to the most frequently asked questions.
It is available here: https://github.com/szechyjs/dsd/wiki

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Edouard Griffths, F4EXB DSDcc Project

DSDcc is a complete rewrite from the original DSD (Digital Speech Decoder) project.
It is available here: https://github.com/f4exb/dsdcc



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Supporting Projects

The supporting mbelib is available here: https://github.com/szechyjs/mbelib mbelib supports the 7200x4400 bit/s codec used in P25 Phase 1, the 7100x4400 bit/s codec used in ProVoice and the "Half Rate" 3600x2250 bit/s vocoder used in various radio systems. It will decode the AMBE Codec but not encode.



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Glenn Lyons VK4PK
glenn@LyonsComputer.com.au
Ver:gnl20182018 - pre published v0.9