| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle audio apparatus which can compensate an audio signal for natural noise in a cabin in terms of audibility upon consideration of a silencing amount of noise in the cabin by an active noise controller even when a vehicle speed interlocking-type equalizer and the active noise controller are operated simultaneously. SOLUTION: The on-vehicle audio apparatus includes a vehicle speed interlocking-type equalizer 101 which changes characteristics of an audio signal in accordance with vehicle speed, an active noise controller 102 which reduces noise in the cabin by generating a noise reduction signal from a reference signal highly correlated with the noise in the cabin, and a silencing noise estimator 103. The silencing noise estimator 103 estimates a reduction amount of the noise in the cabin from an output signal of the active noise controller 102 and changes the characteristics of the vehicle speed interlocking-type equalizer based on information thereof. COPYRIGHT: (C)2011,JPO&INPIT
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