Class Notes Topic 8 Lesson 3c

LOUDNESS AND PITCH
Factors Affecting Loudness

Amount of ENERGY = LOUDNESS

○The harder you knock the louder the sound !!!

Intensity = the amount of energy in a wave carries per second

LOUDNESS AND PITCH
Measuring Loudness

●Decibel (dB) - higher dB the higher the sound seems to the listener

LOUDNESS AND PITCH

Factors Affecting Pitch

●Pitch - how high the sound sounds

○Higher the pitch → Higher the Frequency (Hz)

DOPPLER EFFECT
-- The apparent change in pitch as a sound travels toward or away from
the observer.