| 摘要 |
A modem or other telephone device (102, 502) is configured to identify (or receive notification of) the companding law used by a destination modem or telephone device. The telephone device (102, 502) can then, using stored conversion tables, predict the inverse mapping from the converted encoding law. Having done so, the telephone device (102, 502) can identify distorted portions of the decoded signal and modify the original signal before it is sent to the encoding or encoding-converter unit.
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