| 摘要 |
PROBLEM TO BE SOLVED: To make the sound volume of a low-efficiency side speaker more suitable while suppressing faults such as buzzing when audio is reproduced by a plurality of kinds of speakers differing in audio generation efficiency at the same time. SOLUTION: An audio signal adjusting device adjusts audio signals supplied to the speakers differing in audio generation efficiency, e.g., at least one low-efficiency speaker and one high-efficiency speaker. The audio signal adjusting device includes a first adjusting means of adjusting the sound volume of the audio signal supplied to the low-efficiency speaker, a second adjusting means of adjusting the sound volume of the audio signal supplied to the high-efficiency speaker, and a sound pressure level control means of setting a first sound volume level which is the sound volume level of the audio signal adjusted by the first adjusting means and supplied to the low-efficiency speaker to higher than a second sound pressure level which is the sound volume level of the audio signal adjusted by the second adjusting means and supplied to the high-efficiency speaker within predetermined ranges of command sound volume levels for the low-efficiency speaker and high-efficiency speaker according to the command sound volume levels. COPYRIGHT: (C)2007,JPO&INPIT |
