goamr-nb
Copyright 2026 The goamr-nb authors

This product is a pure-Go port of AMR-NB (3GPP TS 26.071, 26.073, 26.090,
26.101, 26.104) derived from the following Apache-2.0 licensed C reference:

  - opencore-amrnb (AMR-NB encoder and decoder)
    https://sourceforge.net/projects/opencore-amr/
    Copyright (C) 2009 Martin Storsjo
    Copyright (C) The Android Open Source Project

The fixed-point DSP was translated function-by-function from the above
source, preserving its algorithms and bit-exact semantics. The original
work is licensed under the Apache License, Version 2.0; this port is
distributed under the same license (see LICENSE).