| 摘要 |
<p>A communication device (100) is provided having a speech encoder (103) and a speech decoder (110) and being able to retrieve and store voice messages in a memory (116). The messages are stored in the memory according to a message format. This format is more compressed than the speech encoding format which is provided by the speech encoder. The device includes a frame interpolation block (109) for decompressing a stored message and thereby creating a signal according to the speech encoding format. A frame decimation block (104) is also provided for compressing a speech encoded signal thereby allowing a corresponding voice message to be stored in the memory according to the message format.</p> |
