Frequency and wavelength – frequency and wavelength of acoustic waves are fundamental quantities that define them. They determine the length of sound and the level of their acoustic pressure, which is measured in decibels.
The frequency of a wave is the number of cycles that a given acoustic wave goes through in one second. The unit of measurement for the frequency of a sound wave in the SI coordinate system is Hertz (Hz). This name comes from the surname of the German physicist Heinrich Hertz, who studied electromagnetic waves among other things during his life. The human ear can perceive sound waves with frequencies ranging from 16 Hz to 20 kHz.
The wavelength of an acoustic wave is the smallest distance observed between two selected points in the same phase of oscillation. In short, it refers to two repeating segments of the acoustic wave. The wavelength in conducted studies is denoted by the Greek letter λ.
The wavelength of an acoustic wave is inversely proportional to its frequency. The proportions are determined by the coefficient, which is the speed of the wave in a given medium. The wavelength is calculated by dividing the speed of the wave by its frequency.
