Introduction - If you have any usage issues, please Google them yourself
Coding of speech at 8 kbit/s using Conjugate-
Structure Algebraic-Code-Excited Linear-Prediction
(CS-ACELP)Annex D: 6.4 kbit/s CS-ACELP speech coding algorithm ITU-T Recommendation G.729 – Annex D
(Previously CCITT Recommendation)