Complete Solutions
In a digital signal, the on state is represented by _____, and the off state is represented by ____.
✔✔One; zero
A signal that has many varying states is called a(n) _____ signal. ✔✔Analog
Bit depth is defined as the number of _____ you have in which to describe the value. ✔✔States
Lossy Compression is particularly suitable for the transmission of _____ ✔✔Audio, Video and
Images.
What is a codec? ✔✔A device or processing system that encodes and decodes data
As noise is introduced to a(n) _____ signal, processing circuitry can determine if the signal is
intended to be high or low, and then retransmit a solid signal without the imposed noise.
✔✔Digital
,Noise overcomes the signal after many generations of reamplification of a(n) _____ signal.
✔✔Analog
How sound moves through the air is called __? ✔✔Propagation
Wavelength is the _____. ✔✔Physical distance between two points of a waveform that are
exactly one cycle apart
Which of the following does 0 dB SPL describe? ✔✔The threshold of human hearing
A "just noticeable" change in sound pressure level, either louder or softer, requires a _____
change. ✔✔+/-3 dB
Acoustics covers how sound is _____, and its _____ and _____. ✔✔Produced; propagation;
control
Numerous, persistent reflections of sound are called _____. ✔✔Reverberation
,Ambient noise is sound that _____ the desired message or signal. ✔✔Interferes with
The audio signal ends up in a(n) _____ before being converted back into acoustical energy.
✔✔Output Device
The strength of the electrical audio signal from a microphone is called a(n) _____ -level signal.
✔✔Mic-Level
Phantom power is the _____ required to power a condenser microphone. ✔✔Remote Power
Typically, what type of connector finishes the shielded twisted-pair cable? ✔✔XLR
The simultaneous use of multiple wireless microphone systems requires ____. ✔✔Frequency
Coordination
If a technician changes the level of a signal, it is called _____. ✔✔Gain Adjustment
The amplifier comes right before _____ in the audio system chain. ✔✔The Loudspeakers
, What is a crossover? ✔✔An electrical frequency dividing network circuit
electromagnetic radiation is categorized by its ____ ? ✔✔Wavelength
Generally, a _____ measurement is taken at a task area like a video screen. ✔✔Lux
Perceived illumination decreases by _____ when the distance from a light source is doubled.
✔✔75%
The amount of ambient light in a displayed environment _____. ✔✔Negatively affects the
quality of the displayed image
The native resolution of display device is defined by its _____ ✔✔Horizontal rows and vertical
columns of pixels
According to the Projected image System Contrast Ratio Standard, what is the minimum contrast
ratio required for viewing full-motion video? ✔✔80:1