TASK 7: HEARING
LECTURE
Sound is a physical event produced by vibrations and transmitted by pressure waves.
Sound also is the experience of hearing.
,Amplitude: the perception of loudness (dB)
0-140 dB is normal. >140 is the threshold of pain.
,Frequency: perception of pitch (Hz)
1000 Hz means that there are 1000 waves in 1 sec = 1/1000
,
LECTURE
Sound is a physical event produced by vibrations and transmitted by pressure waves.
Sound also is the experience of hearing.
,Amplitude: the perception of loudness (dB)
0-140 dB is normal. >140 is the threshold of pain.
,Frequency: perception of pitch (Hz)
1000 Hz means that there are 1000 waves in 1 sec = 1/1000
,
