| 摘要 |
PURPOSE:To prevent the occurrence of complexity and error in operation, by a method wherein a distance between a sound source and an echo sound receiver is automatically recorded in an ICH of a data recorder, and in case it is analyzed, a distance correction is autmatically made through simultaneous reading of an acoustic data and a distance data. CONSTITUTION:An acoustic signal from a sound source 1 is received by an echo sound receiver 2 to record it in a data recorder 3, and simultaneously, a distance data, measured by a distance measuring device 6, is also recorded in one channel of the data recorder 3. In case a reproduction signal in the data recorder 3 is analyzed, a distance data B, simultaneously, is read togetherwith an acoustic signal A, and an analyzer 4 performs a frequency analysis in which an automatic distance correction is made. |
