How is frequency of sound wave transmissions measured?

Frequency of sound wave transmissions is measured in hertz (Hz), which defines the number of cycles per second of a sound wave. This unit of measurement is essential in understanding how sound behaves in various environments, including underwater. In hydrographic surveying, frequencies can impact the performance of sonar systems, influencing resolution and range of detected objects.

While decibels (dB) measure the intensity or pressure level of sound, pascals (Pa) quantify pressure, and meters per second (m/s) measure the speed of sound in a medium, none of these relate to the frequency itself. Hertz is the designated unit for measuring how frequently sound waves oscillate, making it the correct choice for this question.