摘要 |
A quality level analysis unit 504 specifies a coding method, communication line conditions, and a quality level, such as an S/N ratio and the like, of voices of an input channel, received by a corresponding receiving unit 501. A channel allocation/mixing unit 502 controls the allocation or mixing of voices of respective input channels to or into respective output channels 503 (output units 505) on the basis of the results of analysis by the quality level analysis unit 504. Consequently, loud speakers from which poor quality voices and good quality voices are output can be separated from one another, thus improving the total intelligibility of received voices.
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