| 摘要 |
PROBLEM TO BE SOLVED: To provide a microphone interval control device capable of rapidly controlling a microphone interval in response to the frequency characteristics of a noise component.SOLUTION: A microphone interval control device is based on fixedly arranged multiple microphones. Since a microphone interval is changed by the combination of two microphones among the multiple microphones, a microphone interval is selected by selecting two acquisition signals to be output to a next stage device. A feature amount expressing the frequency and largeness of change in the inclination direction of a signal waveform concerning the acquisition signal of the predetermined microphone is calculated in order to perform the selection. The feature amount reflects the level of the inclusion of a high range component. The two acquisition signals are selected in response to the calculated feature amount.SELECTED DRAWING: Figure 1 |
