| 摘要 |
PROBLEM TO BE SOLVED: To automatically increase intelligibility of sound, when a listener is under high or low environmental noise. SOLUTION: An intelligibility adjusting device 1 of the invention comprises a receiver side sound operation detecting means 4 for detecting the amplitude level of a received sound; a transmitter side sound operation means 5 for calculating the amplitude level of a transmitting noise; and a sound-improving means 3 for adjusting a gain, based on the amplitude level of the received sound detected by the receiver side sound operation detecting means 4, and the amplitude level of the transmitting noise calculated by the transmitter side sound operation means 5. COPYRIGHT: (C)2008,JPO&INPIT
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