| Developer(s) | David Grant Rowe |
|---|---|
| Initial release | August 25, 2010 |
| Stable release | 1.2.0
/ June 24, 2023 |
| Repository | github |
| Written in | C99 |
| Platform | Cross-platform |
| Type | Audio codec |
| License | GNU LGPL, v2.1 |
| Website | www |
Codec 2 is a low-bitrate speech audio codec (speech coding) that is patent free and open source.[1] Codec 2 compresses speech using sinusoidal coding, a method specialized for human speech. Bit rates of 3200 to 450 bit/s have been successfully created. Codec 2 was designed to be used for amateur radio and other high compression voice applications.
- ^ "DCC2011-Codec2-VK5DGR" (PDF).