| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mixing balance automatic adjustment device capable of automatically adjusting a state of a mixing balance of a voice signal so as to be matched with an acoustic feeling of the elderly. <P>SOLUTION: The mixing balance automatic adjustment device includes: an NR level detection unit 20 for detecting an NR level; a BGM level detection unit 30 for detecting a BGM level; an NR statistical value calculation unit 2 for calculating an NR statistical value; a BGM statistical value calculation unit 3 for calculating a BGM statistical value; a level difference calculation unit 41 for calculating a difference between a BGM level and an NR level; an evaluation signal selection unit 42 for selecting any one of a level difference and a BGM level as an evaluation signal depending on an NR level and a BGM level; an evaluation signal average value calculation unit 43 for calculating an average value of an evaluation signal; a gain calculation unit 5 for calculating a gain to a BGM signal depending on a threshold value determined by an NR statistical value and a BGM statistical value and an evaluation signal average value; and a voice output unit 6 for outputting a BGM signal by multiplying an NR signal by a gain. <P>COPYRIGHT: (C)2013,JPO&INPIT |
