| 摘要 |
PROBLEM TO BE SOLVED: To provide a voice transmission system in digital mobile radio communication in which an increase in voice delay is reduced. SOLUTION: A processing requiring a longest time in a process for transmitting a voice is usually a voice codec processing. Since each of subsequent processings (mapping-window processing) begins processing at a moment in time when the voice codec processing ends, a processing start timing of voice codec is generated based on a transmission frame timing and operation is sustained regardless of pressing. Since a timing independent from pressing is employed in the operation, voice delay can be minimized. COPYRIGHT: (C)2004,JPO&NCIPI
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