Hertz Hertzthe unit of frequency; the number of cycles, or wavelengths, in a second (cycles/second) Related Articles: Glossary: frequencyGlossary: octave band noiseHot Topic - Listening to Monterey BayWhat are common underwater sounds?Sonar Equation Example: Active SonarDetermine if a sound affects a marine animalSonar Equation Example: Passive SonarFrequencyWhat units are used to measure sound?Wavelength Derek Sutcliffe2017-02-26T20:09:58-05:00