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A change in frequency is a change in pitch, in terms of sound. try to picture a sine wave in your mind. When you lower the frequency of the wave, it stretches the sine wave out (Which is how the pitch of the sound is lowered. I'm assume that you're question is about Audio.) For example, if you had a sound wave at 440Hz (And is aslo the musical note "A" on the center octave), and you changed its frequency to 329.63Hz, it would then sound lower in pitch (The musical note of "E") I hope that helps ;)

~Mitch

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13y ago

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