«amplitude-frequency-period-sound». BYJUS. 5 de agosto de 2016. Consultado el 30 de junio de 2022. «The amplitude of a sound wave is the measure of the height of the wave. The amplitude of a sound wave can be defined as the loudness or the amount of maximum displacement of vibrating particles of the medium from their mean position when the sound is produced.»
«Amplitude Frequency Period Sound». VEDANTU. 23 de junio de 2020. Consultado el 30 de junio de 2022. «Amplitude is the maximum displacement of the particles of a sound wave. Frequency is the number of vibrations made by a sound wave per second.»
