| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound source survey device which surveys a sound source position within an area of interest in a space, and which achieves both securement of a real-time property of sound source surveying and accuracy of the sound source position, at a high level.SOLUTION: A process includes the steps of: calculating sound pressure of a plurality of initial measurement points discretely set within an area of interest in a space, on the basis of sound signals obtained by sound reception using a probe including a plurality of arrayed microphones; calculating a sound pressure difference composed from a difference between the sound pressure of neighboring measurement points and comparing the sound pressure difference with a threshold value; further setting a new measurement point between two neighboring measurement points for which the obtained sound pressure difference is equal to or greater than the threshold value and calculating sound pressure of the new measurement point; and calculating a sound pressure difference composed from a difference between sound pressure of neighboring measurement points including the new measurement point in order to compare the sound pressure difference with the threshold value. The above process is repeated until all sound pressure differences related to the area of interest are equal to or below the threshold value. |
