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Sound and perception, ENERGIE, AMPLITUDE AND DISTANCE - Coggle Diagram
Sound and perception
How loudly will we perceive a sound?
the intensity of the sound waves
decibel levels higher
sounds waves have greater intensity
sounds are louder
10-decibel increase
loudness is 10 times greater
Distance
same amount of energy over a greater area
the intensity and loundness of the sound is less
Amplitude
size of sound waves
greater amplitude waves have more energy and intensity
sound louder
Anatomy speaking...
Human hear sound between 20 hZ and 20 kHz and sound level: 0 to 120 dB
air is picked by the pinna of the outer ear
channeled ear canal
vibrates the eardum
amplified by the ossicles
vibrate a membrane on the oval window of the cochlea
sound in the ear -> nervous message
vibration is turned into lymph
hair cells are activated
transmitted to the brain by the auditory nerves
different speeds
in gases
thr fastest
in liquids
in solids
the slowest
But what are we hearing?
The nerve message is transmitted to a specific area of the cerebral cortex
The cerebral area process the information
recognition of voices
melody of music
identification of noises
ENERGIE
AMPLITUDE AND DISTANCE
