Digital Speech Decoder Project (DSD)

1. Jared Szechy's DSD Project
2. Edouard Griffths, F4EXB DSDcc Project
3. Supporting Projects

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

[Top][Home]

Edouard Griffths, F4EXB DSDcc Project

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.