👉 Monoplasric is a type of sound wave that occurs when the frequency of the sound wave is exactly one half of its fundamental frequency. This means that the wavelength and period are both equal to 1/2 the fundamental frequency, which is approximately 1.053 Hz. Monoplasric waves are often used in communication systems such as telephone lines, radio stations, or television signals to transmit sound signals with a precise, clear, and consistent quality.