Unwanted sound.
The study of all sound, including ultrasound and infrasound.
Sound frequencies above the human audible range. This is generally at frequencies above 20kHz.
Sound frequencies below the audible range. This is generally below 20Hz.
A logarithmic scale applied to any parameter, including for measuring sound level.
Mathematical concept whereby a number is multiplied by itself, e.g. 10 to the power of 2, which is 100.
Underwater sound, which can be used in conducting underwater measurements.
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