音響信号を利用した体積測定の研究 : 変動体積の測定および空洞内部音源による体積測定
1994 年 60 巻 570 号 p. 538-543
詳細
1994 年 60 巻 570 号 p. 538-543
A new method of measuring the liquid and solid in a container has been investigated. A speaker mounted upon the end face of the container emits white noise, and the air in the container resonates. The resonant frequency of the air in the container depends upon the volume of the air. This paper deals with the measurement of fluctuating volume with time. The simplified measuring equipment has a speaker fixed in the container. Experimental and calculated results show that this measuring method utilizing sound frequency is very useful and can be used to measure fluctuating volume every 0.1 seconds.
