Re: [SoX-devel] AMR codecs

2020-08-13 Thread Måns Rullgård
Måns Rullgård writes: > Then there is the OpenCORE library[1]. Although in part based on the > 3GPP code, it is apparently somehow blessed to make it legal. However, > it only includes decoding. Yet another library, vo-amrwbenc, can encode > the WB variant but not NB. Both of these tend to ha

[SoX-devel] AMR codecs

2020-08-13 Thread Måns Rullgård
Another day, another library mess. The AMR speech codec comes in two variants, wide-band and narrow-band. The only complete implementation I'm aware of is the reference library from 3GPP. Although the code is readily available, using it is somewhat of a legal grey area. It is not generally avail