| 摘要 |
PROBLEM TO BE SOLVED: To calculates each frequency characteristic of a microphone and a loudspeaker, while suppressing mutual influence of both.SOLUTION: When impulse sound which is output by the loudspeaker 17 is collected by the microphone 16, a response specifying unit 156 specifies impulse response on the basis of a sound collection result. A separation unit 160 separates a time sequence change of the impulse response specified by the response specifying unit 156 into one corresponding to the microphone 16 and one corresponding to the loudspeaker 17 in a time axis. The separation unit 160 sets the impulse response, for example, within a first time range, to the one corresponding to the microphone 16. A vibration face of the microphone 16 is less than that of the loudspeaker 17, and impulse response depending on the microphone 16 intensively appears in a short period of time (the first time range). Meanwhile, the separation unit 160 separates, for example, impulse response of a second time range following the first time range, into the one corresponding to the loudspeaker 17. |
