RECA 250 Exam Questions & Answers
(Grade A+)
What is the frequency range of human hearing? -
correct answer ✅20 Hz to 20 kHz
"High Level" refers to what? -
correct answer ✅Loudness or amplitude
"High frequency" refers to what? -
correct answer ✅High pitch
We measure amplitude in _____? -
correct answer ✅decibels (dB)
We measure frequency in _____? -
correct answer ✅Hertz (Hz)
The Threshold of hearing is ____? -
correct answer ✅The faintest sound that the average person can
hear. That becomes the point of reference for "zero" on the SPL
decibel scale.
What is the perceived loudness of a 10 dB increase? -
correct answer ✅Doubled
,RECA 250 Exam Questions & Answers
(Grade A+)
What is the perceived loudness of a 3 dB increase? -
correct answer ✅3 dB increase is subtle but noticeable
What is the perceived loudness of a 1 dB increase? -
correct answer ✅1 dB increase is very subtle and will probably be
unnoticed depending on the nature of the program material and
the listening environment.
How does SPL measure dB? -
correct answer ✅Decibels on the SPL scale measure physical
energy from waves moving through the air.
What do decibels on a VU meter or an analog recorder peal meter
measure? -
correct answer ✅Decibels on a VU meter or an analog recorder
peak meter measure levels of electric current, referenced to some
standard operating level.
What is "0" on an analog tape recorder equipped with a VU or peak
meter? -
correct answer ✅On an analog tape recorder equipped with a VU
or peak meter, "0" on the meter would correspond to a standard
, RECA 250 Exam Questions & Answers
(Grade A+)
reference level that represents a strong - but not too strong - signal
operating level, or so many decibels above standard operating level.
What is 100 dB SPL equal to on a VU meter? -
correct answer ✅Where is no direct correlation between decibels
of SPL and decibels on a VU meter.
What is the purpose of a meter with an instantaneous rise time? -
correct answer ✅Reads "hotter" than a meter with a moderate or
average rise time. But very brief peaks may not seem that loud to
the human ear.
Why does the human ear become desensitized to loud sounds? -
correct answer ✅After a period of exposure the muscles in the ear
actually tighten as a kind of protective mechanism, known as "aural
reflex".
Frequency response implies a comparison of...? -
correct answer ✅Between the ideal performance (flat response)
and the real performance (little variances in dB)
(Grade A+)
What is the frequency range of human hearing? -
correct answer ✅20 Hz to 20 kHz
"High Level" refers to what? -
correct answer ✅Loudness or amplitude
"High frequency" refers to what? -
correct answer ✅High pitch
We measure amplitude in _____? -
correct answer ✅decibels (dB)
We measure frequency in _____? -
correct answer ✅Hertz (Hz)
The Threshold of hearing is ____? -
correct answer ✅The faintest sound that the average person can
hear. That becomes the point of reference for "zero" on the SPL
decibel scale.
What is the perceived loudness of a 10 dB increase? -
correct answer ✅Doubled
,RECA 250 Exam Questions & Answers
(Grade A+)
What is the perceived loudness of a 3 dB increase? -
correct answer ✅3 dB increase is subtle but noticeable
What is the perceived loudness of a 1 dB increase? -
correct answer ✅1 dB increase is very subtle and will probably be
unnoticed depending on the nature of the program material and
the listening environment.
How does SPL measure dB? -
correct answer ✅Decibels on the SPL scale measure physical
energy from waves moving through the air.
What do decibels on a VU meter or an analog recorder peal meter
measure? -
correct answer ✅Decibels on a VU meter or an analog recorder
peak meter measure levels of electric current, referenced to some
standard operating level.
What is "0" on an analog tape recorder equipped with a VU or peak
meter? -
correct answer ✅On an analog tape recorder equipped with a VU
or peak meter, "0" on the meter would correspond to a standard
, RECA 250 Exam Questions & Answers
(Grade A+)
reference level that represents a strong - but not too strong - signal
operating level, or so many decibels above standard operating level.
What is 100 dB SPL equal to on a VU meter? -
correct answer ✅Where is no direct correlation between decibels
of SPL and decibels on a VU meter.
What is the purpose of a meter with an instantaneous rise time? -
correct answer ✅Reads "hotter" than a meter with a moderate or
average rise time. But very brief peaks may not seem that loud to
the human ear.
Why does the human ear become desensitized to loud sounds? -
correct answer ✅After a period of exposure the muscles in the ear
actually tighten as a kind of protective mechanism, known as "aural
reflex".
Frequency response implies a comparison of...? -
correct answer ✅Between the ideal performance (flat response)
and the real performance (little variances in dB)
