CTS EXAM FLASHCARDS: KEY AND LATEST A+ QUESTIONS
AND ANSWERS
Standard DV cameras usually compress at a ration of ____?
1. 10:1
2. 5:1
3. 3:2
4. 2:1
A device or computer program that encodes and decodes file information
What is a codec?
1. A structure of data containment
2. A formatting system
3. A program that holds data
4. A device or computer program that encodes and decodes file information
Digital
As a noise is introduced to a(n) ____ signal, discerning circuitry can determine if the
signal is intended to be high or low, and then retransmit a solid signal without the
imposed noise.
1. Digital
2. Dirty
3. Analog
4. Clean
Analog
Noise overcomes the signal after many generations of reamplification of a(n) ____
signal.
1. Digital
2. Analog
3. Low
4. High
,Propagation
How sound moves through the air is called ____?
1. Generation
2. Compression
3. Acoustical
4. Propagation
Physical distance between two points of a waveform that are exactly one cycle
apart
Wavelength is the ____?
1. Number of times a wavelength cycle occurs per second
2. Intensity or loudness of a sound in a particular medium
3. Physical distance between two points of a waveform that are exactly one cycle apart
4. Cycle when molecules move from rest through compression to rest to rarefaction
The threshold of human hearing
Which of the following does 1 dB SPL describe?
1. The threshold of human hearing
2. Ambient noise level
3. The threshold of pain
4. Normal listening level
+/- dB
A "just noticeable" change in sound pressure level, either louder or softer, requires a
____ change.
1. +/- 10 dB
2. +/- 6 dB
3. +/- 1 dB
4. +/- dB
Produced; propagation; control
Acoustics covers how sound is ____, and its ____ and ____.
1. Received; effects; structure
, 2. Produced; propagation; control
3. Controlled; delivery; translation
4. Produced; amplification; reception
Reverberation
Numerous, persistent reflections of sound are called ____.
1. Directional sound
2. Echo
3. Surface reflection
4. Reverberation
Interferes with
Ambient noise is sound that ____ the desired message or signal.
1. Interferes with
2. Completely blocks
3. Enhances
4. Is louder than
Output device
The audio signal ends up in a(n) ____ before being converted back into acoustical
energy.
1. Output device
2. Electrical signal
3. Processor
4. Microphone
Mic
The strength of the electrical audio signal from a microphone is called a(n) ____ -level
signal.
1. Dynamic
2. Condenser
3. Electret
AND ANSWERS
Standard DV cameras usually compress at a ration of ____?
1. 10:1
2. 5:1
3. 3:2
4. 2:1
A device or computer program that encodes and decodes file information
What is a codec?
1. A structure of data containment
2. A formatting system
3. A program that holds data
4. A device or computer program that encodes and decodes file information
Digital
As a noise is introduced to a(n) ____ signal, discerning circuitry can determine if the
signal is intended to be high or low, and then retransmit a solid signal without the
imposed noise.
1. Digital
2. Dirty
3. Analog
4. Clean
Analog
Noise overcomes the signal after many generations of reamplification of a(n) ____
signal.
1. Digital
2. Analog
3. Low
4. High
,Propagation
How sound moves through the air is called ____?
1. Generation
2. Compression
3. Acoustical
4. Propagation
Physical distance between two points of a waveform that are exactly one cycle
apart
Wavelength is the ____?
1. Number of times a wavelength cycle occurs per second
2. Intensity or loudness of a sound in a particular medium
3. Physical distance between two points of a waveform that are exactly one cycle apart
4. Cycle when molecules move from rest through compression to rest to rarefaction
The threshold of human hearing
Which of the following does 1 dB SPL describe?
1. The threshold of human hearing
2. Ambient noise level
3. The threshold of pain
4. Normal listening level
+/- dB
A "just noticeable" change in sound pressure level, either louder or softer, requires a
____ change.
1. +/- 10 dB
2. +/- 6 dB
3. +/- 1 dB
4. +/- dB
Produced; propagation; control
Acoustics covers how sound is ____, and its ____ and ____.
1. Received; effects; structure
, 2. Produced; propagation; control
3. Controlled; delivery; translation
4. Produced; amplification; reception
Reverberation
Numerous, persistent reflections of sound are called ____.
1. Directional sound
2. Echo
3. Surface reflection
4. Reverberation
Interferes with
Ambient noise is sound that ____ the desired message or signal.
1. Interferes with
2. Completely blocks
3. Enhances
4. Is louder than
Output device
The audio signal ends up in a(n) ____ before being converted back into acoustical
energy.
1. Output device
2. Electrical signal
3. Processor
4. Microphone
Mic
The strength of the electrical audio signal from a microphone is called a(n) ____ -level
signal.
1. Dynamic
2. Condenser
3. Electret
