And therefore, if you are studying a wall cross section you are really trying to understand since the wave velocity is directly proportional to the density of the material, you are getting an information on the cross sectional property of the wall or the material that is being studied.
ह्यामध्ये, पदार्थाची घनता आणि वेव्ह व्हेलॉसिटी ह्यांचे समांतर गुणोत्तर असल्यामुळे, तुम्हाला त्या क्रॉस सेक्शनची किंवा त्यातल्या पदार्थांची माहिती मिळते.