| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sound reproducing apparatus for use in vehicle that can control an audio device naturally in audibility even if variations in audio signal level are large when controlling the audio device so as to prevent the audio signals therefrom from being masked by vehicle interior noises. <P>SOLUTION: The sound reproducing apparatus for use in vehicle includes: a control amount calculation unit 106 for calculating a control amount that reduces the variations in audio signal level; a level adjusting equalizer 101 for controlling an audio signal level according to the control amount; a compensation amount calculation unit 107 for calculating a compensation amount that adjusts an audio signal that is interfered by noises and inaudible to an audible audio signal; and a noise compensation equalizer 103 for controlling the audio signal level according to the compensation amount. The sound reproducing apparatus for use in vehicle reduces the variation in audio signal level by the level adjusting equalizer 101, and then controls the audio signal that is interfered by noises and inaudible by the noise compensation equalizer 103. <P>COPYRIGHT: (C)2013,JPO&INPIT |
