©PREP4EXAMS @2024 [REAL EXAM DUMPS] Wednesday, July 17, 2024 1:27 AM
PSYC 225 TEST 3 CH 11 PRACTICE QUESTIONS AND
ANSWERS (100% PASS)
sound - ✔️✔️both a physical stimulus and perceptual response
physical def of sound - ✔️✔️sound is a pressure change in the air or other medium
sound wave - ✔️✔️pattern of air pressure changes, which travels through air at 340 meters per
second
perceptual def of sound - ✔️✔️sound is the experience we have when we hear
physical aspects of sound - ✔️✔️-pressure change
-condensation
-rarefaction
-frequency
-amplitude
condensation - ✔️✔️(physical aspects of sound)
-Diaphragm moves out
-Nearby air molecules are pushed together
-Pressure +
rarefaction - ✔️✔️(physical aspects of sound)
-Diaphragm moves in
-Air molecules spread out to fill in the new space
-Pressure -
pure tone - ✔️✔️(physical aspects of sound)
occurs when changes in air pressure occur in a pattern described by a mathematical function
called a sine wave
-rare in the environment
frequency - ✔️✔️(physical aspects of sound)
the number of cycles per second that the pressure changes repeat
-Hertz (Hz)
-related to pitch perception
1
, ©PREP4EXAMS @2024 [REAL EXAM DUMPS] Wednesday, July 17, 2024 1:27 AM
amplitude - ✔️✔️(physical aspects of sound)
the size of the pressure change
-difference in pressure b/w high and low peaks
-decibel (dB)
-related to loudness perception
complex tone - ✔️✔️(physical aspects of sound)
composed of a number of pure tone components added together
-component --> harmonic
-periodic --> property of repetition
fundamental frequency - ✔️✔️(physical aspects of sound)
-repetition rate
-How many times per second does the tone pattern repeat?
first harmonic - ✔️✔️(physical aspects of sound)
-a pure tone with frequency equal to the fundamental frequency
--called the fundamental of the tone
higher harmonics - ✔️✔️(physical aspects of sound)
-pure tones with frequencies that are whole-number multiples of the fundamental frequency
perceptual aspects of sound - ✔️✔️-loudness
-pitch
-timbre
loudness - ✔️✔️(perceptual aspects of sound)
-perceptual quality most closely related to the level or amplitude of an auditory stimulus,
which is expressed in decibels
--involves differences in the perceived magnitude of a sound
--depends on frequency (can only hear w/in a certain range, & w/in range some frequencies
easier to hear than others)
hearing range - ✔️✔️(perceptual aspects of sound)
20 Hz to 20,000 Hz
highest sensitivity for hearing - ✔️✔️(perceptual aspects of sound)
2,000 Hz - 4,000 Hz
2
PSYC 225 TEST 3 CH 11 PRACTICE QUESTIONS AND
ANSWERS (100% PASS)
sound - ✔️✔️both a physical stimulus and perceptual response
physical def of sound - ✔️✔️sound is a pressure change in the air or other medium
sound wave - ✔️✔️pattern of air pressure changes, which travels through air at 340 meters per
second
perceptual def of sound - ✔️✔️sound is the experience we have when we hear
physical aspects of sound - ✔️✔️-pressure change
-condensation
-rarefaction
-frequency
-amplitude
condensation - ✔️✔️(physical aspects of sound)
-Diaphragm moves out
-Nearby air molecules are pushed together
-Pressure +
rarefaction - ✔️✔️(physical aspects of sound)
-Diaphragm moves in
-Air molecules spread out to fill in the new space
-Pressure -
pure tone - ✔️✔️(physical aspects of sound)
occurs when changes in air pressure occur in a pattern described by a mathematical function
called a sine wave
-rare in the environment
frequency - ✔️✔️(physical aspects of sound)
the number of cycles per second that the pressure changes repeat
-Hertz (Hz)
-related to pitch perception
1
, ©PREP4EXAMS @2024 [REAL EXAM DUMPS] Wednesday, July 17, 2024 1:27 AM
amplitude - ✔️✔️(physical aspects of sound)
the size of the pressure change
-difference in pressure b/w high and low peaks
-decibel (dB)
-related to loudness perception
complex tone - ✔️✔️(physical aspects of sound)
composed of a number of pure tone components added together
-component --> harmonic
-periodic --> property of repetition
fundamental frequency - ✔️✔️(physical aspects of sound)
-repetition rate
-How many times per second does the tone pattern repeat?
first harmonic - ✔️✔️(physical aspects of sound)
-a pure tone with frequency equal to the fundamental frequency
--called the fundamental of the tone
higher harmonics - ✔️✔️(physical aspects of sound)
-pure tones with frequencies that are whole-number multiples of the fundamental frequency
perceptual aspects of sound - ✔️✔️-loudness
-pitch
-timbre
loudness - ✔️✔️(perceptual aspects of sound)
-perceptual quality most closely related to the level or amplitude of an auditory stimulus,
which is expressed in decibels
--involves differences in the perceived magnitude of a sound
--depends on frequency (can only hear w/in a certain range, & w/in range some frequencies
easier to hear than others)
hearing range - ✔️✔️(perceptual aspects of sound)
20 Hz to 20,000 Hz
highest sensitivity for hearing - ✔️✔️(perceptual aspects of sound)
2,000 Hz - 4,000 Hz
2
