Psychology / Unit 4 Psych 0421 short lesson, about 20 seconds
Frequency and Amplitude in Sound
Captions available
The idea
Sound frequency is the number of wave cycles per second and determines perceived pitch; amplitude determines perceived loudness.
In practice
A tuning fork struck harder is louder at the same pitch, because amplitude changed and frequency did not.
Where people slip
Pitch and loudness are perceptions. Frequency and amplitude are the physical properties behind them.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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