Speech Codec » History » Version 1
laforge, 02/19/2016 10:52 PM
explain where the tetra codec is described
| 1 | 1 | laforge | = TETRA Speech Codec = |
|---|---|---|---|
| 2 | |||
| 3 | The TETRA speech codec is part of the family of ACELP codecs. |
||
| 4 | |||
| 5 | For more information, please check out the following specifications: |
||
| 6 | * ETSI EN 300 395-1 (General description of speech functions) |
||
| 7 | * ETSI EN 300 395-2 (TETRA Codec) |
||
| 8 | * ETSI EN 300 395-3 (Specific operating features) |
||
| 9 | * ETSI EN 300 395-4 (Codec conformance testing) |
||
| 10 | |||
| 11 | == Implementations == |
||
| 12 | |||
| 13 | ETSI has published a reference implementation of the codec implemented in C. |
||
| 14 | |||
| 15 | It is freely available together with ETSI EN 300 395-2. |
||
| 16 | |||
| 17 | In order to obtain it, follow the following procedure: |
||
| 18 | * go to http://pda.etsi.org/ |
||
| 19 | * enter "en 300 395-2" as search term |
||
| 20 | * execute the search, there should only be one result in the list |
||
| 21 | * click on the 'Download' link (top right part of the result table) |
||
| 22 | * enter your e-mail address in the 'users without an ETSI account' field |
||
| 23 | * click submit |
||
| 24 | * click on the folder-like symbol on the bottom left side of the result table (see below) |
||
| 25 | * you should now have a file called en_30039502v010301p0.zip |
