| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle audio apparatus with a sound quality correction apparatus which is simpler and more suitable for user preferences than conventional apparatuses.SOLUTION: The on-vehicle audio apparatus comprises: a bandpass filter 8 with a band of 300 Hz to 4 kHz; a spectrum analyzer 9 which detects a voltage level; a signal generator 13 to generate a test signal; and a VOL determination unit 10 which determines, from the characteristics obtained from them, the performance of an arbitrary microphone 22 and a volume optimal to correction of the space characteristic of a measurement target 1. |
