PSYC 230 EXAM 2 STUDY GUIDE UIUC
What is sound?
Sound is a vibration that happens in a medium
What is a valid stimulus?
Periodic versions in air strain touring out from the source and reaching the ears
What is a valid wave?
Wave of strain adjustments that occur inside the air as a function of the vibration of a source
Is a medium necessary to conduct sound?
Yes, the sound travels via the medium to the ears
True or fake: water and air are examples of mediums
True, they're mediums
How rapid does sounds travel?
761.2 mph
True or fake: the closer or tighter the molecules are to every other, the faster they'll tour the
vibration.
True
What are the two pressures of sound in a valid wave referred to as?
Compression (high strain) and rarefaction (low stress)
What is frequency measured in?
Cycles in line with 2nd (Hz)
What is frequency?
The quantity of time among one height of high pressure and the next
What are natural tones?
,Sound waves wherein air stress adjustments comply with a sine wave sample and vibrate at
one frequency
What is amplitude of a sound wave?
The distinctive between the most sound and minimal sounds pressures
True or fake: Amplitude translated to loudness
True, we pay attention a huge range of amplitudes
True or false: humans can discriminate between differences in loudness very well.
Yes, at variations as little as 1 dB.
What are adjustments in stress referred to as for sound?
Acoustic strain
True or fake: Frequency impacts how fast and a long way a legitimate travels
True, decrease frequency sounds journey farther because they require less energy to
maintain travelling thru a medium
What is pitch?
Pitch is the subjective experience of frequency
What is used to degree sound amplitude?
Hertz
What is the connection among amplitude and sound degree?
Larger amplitude = louder sound
What is the connection between frequency and pitch?
The greater the frequency = higher pitch
What is the hearing range of people?
20-20,000 Hz
Why may older humans no longer be capable of hear the full range of sounds?
Hearing dissipates with age, exposure to loud sounds while younger
, True or false: the lowest frequencies of sound that a person can pay attention have a
tendency to stay stable with age.
Proper
True or fake: under 20 Hz and above 20,000 Hz, human can pay attention
fake, people are truly deaf irrespective of amplitude at these stages of sound
What is the outer ear?
The par too the ear this is seen to the outdoor environment
What is the pinna?
The lobe or part this is visible
What does the pinna do?
Collects sound and funnels it into the auditory canal
What is the outside auditory canal?
Ear canal; in which earwax accumulates
What does the external auditory canal do?
Conducts sound to the tympanic membrane and amplifies sound frequencies
what is the tympanic membrane?
"eardrum"; thin, translucent, oval membrane that stretches across the ear canal and
separates the center ear from the outer ear
what does the tympanic membrane do?
Vibrates when sound reaches it
True or false: the tympanic membrane has the capacity to heal itself while there are most
effective small holes
real, it could heal and regularly heals whilst fluid is tired from the ear
What is inside the middle ear?
The eustachian tube and ossicles
What is sound?
Sound is a vibration that happens in a medium
What is a valid stimulus?
Periodic versions in air strain touring out from the source and reaching the ears
What is a valid wave?
Wave of strain adjustments that occur inside the air as a function of the vibration of a source
Is a medium necessary to conduct sound?
Yes, the sound travels via the medium to the ears
True or fake: water and air are examples of mediums
True, they're mediums
How rapid does sounds travel?
761.2 mph
True or fake: the closer or tighter the molecules are to every other, the faster they'll tour the
vibration.
True
What are the two pressures of sound in a valid wave referred to as?
Compression (high strain) and rarefaction (low stress)
What is frequency measured in?
Cycles in line with 2nd (Hz)
What is frequency?
The quantity of time among one height of high pressure and the next
What are natural tones?
,Sound waves wherein air stress adjustments comply with a sine wave sample and vibrate at
one frequency
What is amplitude of a sound wave?
The distinctive between the most sound and minimal sounds pressures
True or fake: Amplitude translated to loudness
True, we pay attention a huge range of amplitudes
True or false: humans can discriminate between differences in loudness very well.
Yes, at variations as little as 1 dB.
What are adjustments in stress referred to as for sound?
Acoustic strain
True or fake: Frequency impacts how fast and a long way a legitimate travels
True, decrease frequency sounds journey farther because they require less energy to
maintain travelling thru a medium
What is pitch?
Pitch is the subjective experience of frequency
What is used to degree sound amplitude?
Hertz
What is the connection among amplitude and sound degree?
Larger amplitude = louder sound
What is the connection between frequency and pitch?
The greater the frequency = higher pitch
What is the hearing range of people?
20-20,000 Hz
Why may older humans no longer be capable of hear the full range of sounds?
Hearing dissipates with age, exposure to loud sounds while younger
, True or false: the lowest frequencies of sound that a person can pay attention have a
tendency to stay stable with age.
Proper
True or fake: under 20 Hz and above 20,000 Hz, human can pay attention
fake, people are truly deaf irrespective of amplitude at these stages of sound
What is the outer ear?
The par too the ear this is seen to the outdoor environment
What is the pinna?
The lobe or part this is visible
What does the pinna do?
Collects sound and funnels it into the auditory canal
What is the outside auditory canal?
Ear canal; in which earwax accumulates
What does the external auditory canal do?
Conducts sound to the tympanic membrane and amplifies sound frequencies
what is the tympanic membrane?
"eardrum"; thin, translucent, oval membrane that stretches across the ear canal and
separates the center ear from the outer ear
what does the tympanic membrane do?
Vibrates when sound reaches it
True or false: the tympanic membrane has the capacity to heal itself while there are most
effective small holes
real, it could heal and regularly heals whilst fluid is tired from the ear
What is inside the middle ear?
The eustachian tube and ossicles
