Amplitude is a measure of the size of sound waves. It depends on the amount of energy that started the waves. Greater amplitude waves have more energy and greater intensity, so they sound louder . As sound waves travel farther from their source, the more spread out their energy becomes.
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The larger the amplitude of the waves, the louder the sound . Pitch (frequency) – shown by the spacing of the waves displayed. The closer together the waves are, the higher the pitch of the sound.
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