Sonic Study

Paper Summary:

This paper introduces the general study of sound, and, specifically, ultrasonic phenomena. Human versus animal perception of sound is discussed. The use of ultrasound as a diagnostic tool in humans is outlined.

From the Paper:

"One of the greatest tools that man has ever had in the drive to preserve his own body is that of understanding. Particularly, through greater comprehension of the processes and logistics that facilitate our body functions, we can make further gains in aiding them where need exists. Sonic study is indicative of that very fact and, specifically, with the inception of sound exploration into the canon of physics came evidence that sound is more than just what human beings can hear. Rather, we now understand sound as acoustic energy existing in amplitudes of widely varying sizes and intensities. Further, the human ear perceives these amplitudes by translating their frequency. This frequency, a measure of the quantity of sound waves an object (i.e. vocal chords, drum skin, etc.) produces per second, may occur across an infinite range of measurements, expressed in hertz. The human ear, however, has a decidedly finite capacity for sound comprehension that falls somewhere between 20 and 20,000 Hz. Any sound occurring above that frequency is defined as ultrasonic. That is, ultrasonic phenomena are those sounds that exceed "normal" human hearing capabilities, normal being defined as that hearing which falls within the aforementioned frequency comprehension range."

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