AVIXA Audio 1: Essentials UPDATED
ACTUAL Exam Questions and CORRECT
Answers
a doubling of frequency - CORRECT ANSWER - An octave is _____.
a doubling of amplitude
an eighth of a frequency
an eighth of amplitude
a doubling of frequency
16 dB SPL - CORRECT ANSWER - If a sound has a pressure of 10 dB SPL at a distance
of 10 m, how much pressure would the sound have at a distance of 5 m?
16 dB SPL
20 dB SPL
4 dB SPL
5 dB SPL
spherically and horizontally - CORRECT ANSWER - Through the Inverse Square Law,
the spread of energy that is propagated can be followed _____.
only horizontally
vertically and horizontally
only spherically
spherically and horizontally
+/-3 dB - CORRECT ANSWER - A "just noticeable" change in sound pressure level,
either louder or softer, requires a _____ change.
+/-10 dB
+/-1 dB
+/-3 dB
,+/-6 dB
500 Hz - CORRECT ANSWER - If you go up one octave from 250 Hz, you arrive at
_____.
1250 Hz
125 Hz
500 Hz
251 Hz
the threshold of human hearing - CORRECT ANSWER - 0 dB SPL describes:
the threshold of human hearing
the threshold of pain
ambient noise level
normal listening level
Hertz - CORRECT ANSWER - What is the measurement for frequency?
Wavelength
DC
Hertz
AC
Pitch; volume - CORRECT ANSWER - Wavelength and frequency determine the
__________ of sound, while amplitude determines the __________.
Pitch; volume
Volume; speed
Volume; tone
Speed; tone
, Physical distance between two points of a waveform that are exactly one cycle apart. -
CORRECT ANSWER - Wavelength is the __________.
Cycle when molecules move from rest through compression to rest and rarefaction.
Physical distance between two points of a waveform that are exactly one cycle apart.
Number of times a wavelength cycle occurs per second.
Intensity or loudness of a sound in a particular medium.
the whole number multiples of a fundamental frequency - CORRECT ANSWER -
Harmonics are _____.
the particular make-up of complex waveforms
varying proportional energy levels of a fundamental frequency
the whole number multiples of a fundamental frequency
the whole number multiples of individual sine waves
individual sine waves - CORRECT ANSWER - Complex waveforms can be broken down
into _____.
individual sine waves
varying proportional energy levels
simple waveforms
wavelengths and frequencies
propagates - CORRECT ANSWER - Sound _____ through a medium.
resounds
processes
propagates
generates
elastic - CORRECT ANSWER - Because air is a(n) _____ medium, vibrated molecules
transmit motion to the molecules surrounding them.
ACTUAL Exam Questions and CORRECT
Answers
a doubling of frequency - CORRECT ANSWER - An octave is _____.
a doubling of amplitude
an eighth of a frequency
an eighth of amplitude
a doubling of frequency
16 dB SPL - CORRECT ANSWER - If a sound has a pressure of 10 dB SPL at a distance
of 10 m, how much pressure would the sound have at a distance of 5 m?
16 dB SPL
20 dB SPL
4 dB SPL
5 dB SPL
spherically and horizontally - CORRECT ANSWER - Through the Inverse Square Law,
the spread of energy that is propagated can be followed _____.
only horizontally
vertically and horizontally
only spherically
spherically and horizontally
+/-3 dB - CORRECT ANSWER - A "just noticeable" change in sound pressure level,
either louder or softer, requires a _____ change.
+/-10 dB
+/-1 dB
+/-3 dB
,+/-6 dB
500 Hz - CORRECT ANSWER - If you go up one octave from 250 Hz, you arrive at
_____.
1250 Hz
125 Hz
500 Hz
251 Hz
the threshold of human hearing - CORRECT ANSWER - 0 dB SPL describes:
the threshold of human hearing
the threshold of pain
ambient noise level
normal listening level
Hertz - CORRECT ANSWER - What is the measurement for frequency?
Wavelength
DC
Hertz
AC
Pitch; volume - CORRECT ANSWER - Wavelength and frequency determine the
__________ of sound, while amplitude determines the __________.
Pitch; volume
Volume; speed
Volume; tone
Speed; tone
, Physical distance between two points of a waveform that are exactly one cycle apart. -
CORRECT ANSWER - Wavelength is the __________.
Cycle when molecules move from rest through compression to rest and rarefaction.
Physical distance between two points of a waveform that are exactly one cycle apart.
Number of times a wavelength cycle occurs per second.
Intensity or loudness of a sound in a particular medium.
the whole number multiples of a fundamental frequency - CORRECT ANSWER -
Harmonics are _____.
the particular make-up of complex waveforms
varying proportional energy levels of a fundamental frequency
the whole number multiples of a fundamental frequency
the whole number multiples of individual sine waves
individual sine waves - CORRECT ANSWER - Complex waveforms can be broken down
into _____.
individual sine waves
varying proportional energy levels
simple waveforms
wavelengths and frequencies
propagates - CORRECT ANSWER - Sound _____ through a medium.
resounds
processes
propagates
generates
elastic - CORRECT ANSWER - Because air is a(n) _____ medium, vibrated molecules
transmit motion to the molecules surrounding them.
