AAERT CER Exam Questions With 100%
Correct Answers 2024
Methods of audio recording - Correct Answer-Analog and digital
Microphone - Correct Answer-Converts acoustical energy that is
sound into electrical signal that can be delivered to either an analog
or digital device
Path of digital audio - Correct Answer-To change the analog signal to a
digital signal it will need to pass through an analog to digital
converter (digital mixer or A/D converter)
Sample rate - Correct Answer-Number of samples taken each second
when recording sound. (44.1 kHz, 48 kHz, et cetera)
Bit rate - Correct Answer-the number of bits transferred or received
per unit of time (usually 16 or 24 bits)
Low sampling rate - Correct Answer-Approximation
High sampling rate - Correct Answer-Smooth
,Digital mixer or A/D converter - Correct Answer-The digital mixer, or
A/D converter, will output the signal through one of a variety of
connections such as USB, FireWire (IEEE 1394), serial, local computer
bus, or Ethernet.
Dynamic Microphone - Correct Answer-(Moving coil) - made up of
diaphragm, a coil, and a magnet. As acoustical energy hits against the
diaphragm, which is a flat plate at the front of the microphone, it
causes the coil that is attached to it to move back and forth over the
top of the magnet. The movement of the coil over top of the magnet
creates an electrical signal which travels through the wires within the
microphone and eventually reaches your digital mixer or A/D
converter.
Condenser Microphone - Correct Answer-Consists of a front plate
(diaphragm), back plate, and a 48-volt power source. The front and
back plate together create a capacitor. When acoustical energy hits
the front plate of the capacitor, the distance between the front and
back plate changes. The gap between these two plates is electrically
charged. This charge is created by either an internal battery source or
an external power source referred to as phantom power.
Should you use microphones with batteries? - Correct Answer-No. If a
battery would die during use, you could have a gap in your recording,
and you would need to interrupt the event you are reporting to fix
this problem.
, Digital mixers and A/D converters act as - Correct Answer-Phantom
power source for condenser microphones
Biggest difference between dynamic and condenser microphones -
Correct Answer-The way by which acoustical energy is transformed
into electrical energy, one assisted by an electrical source and the
other by a magnet. Both are capable of facilitating a quality audio
recording and are recommended for use in the field of digital
reporting.
Pickup pattern - Correct Answer-Set path in which a microphone will
intercept sound
Cardioid pickup pattern - Correct Answer-Unidirectional - heart-
shaped pattern which reaches out from the diaphragm of a
microphone. Beneficial for single voice located in front of mic while
rejecting additional ambient room sound from behind the mic and
lower sensitivity on the sides
Omnidirectional pickup pattern - Correct Answer-Intercepts sound
from all directions from its placement, meaning it captures sound
equally from all directions. Beneficial for capturing multiple voices
using only one microphone or when you have more speakers than
available recording channels. Use carefully to avoid noisy recordings
or voices covering one another if speaking simultaneously.
Correct Answers 2024
Methods of audio recording - Correct Answer-Analog and digital
Microphone - Correct Answer-Converts acoustical energy that is
sound into electrical signal that can be delivered to either an analog
or digital device
Path of digital audio - Correct Answer-To change the analog signal to a
digital signal it will need to pass through an analog to digital
converter (digital mixer or A/D converter)
Sample rate - Correct Answer-Number of samples taken each second
when recording sound. (44.1 kHz, 48 kHz, et cetera)
Bit rate - Correct Answer-the number of bits transferred or received
per unit of time (usually 16 or 24 bits)
Low sampling rate - Correct Answer-Approximation
High sampling rate - Correct Answer-Smooth
,Digital mixer or A/D converter - Correct Answer-The digital mixer, or
A/D converter, will output the signal through one of a variety of
connections such as USB, FireWire (IEEE 1394), serial, local computer
bus, or Ethernet.
Dynamic Microphone - Correct Answer-(Moving coil) - made up of
diaphragm, a coil, and a magnet. As acoustical energy hits against the
diaphragm, which is a flat plate at the front of the microphone, it
causes the coil that is attached to it to move back and forth over the
top of the magnet. The movement of the coil over top of the magnet
creates an electrical signal which travels through the wires within the
microphone and eventually reaches your digital mixer or A/D
converter.
Condenser Microphone - Correct Answer-Consists of a front plate
(diaphragm), back plate, and a 48-volt power source. The front and
back plate together create a capacitor. When acoustical energy hits
the front plate of the capacitor, the distance between the front and
back plate changes. The gap between these two plates is electrically
charged. This charge is created by either an internal battery source or
an external power source referred to as phantom power.
Should you use microphones with batteries? - Correct Answer-No. If a
battery would die during use, you could have a gap in your recording,
and you would need to interrupt the event you are reporting to fix
this problem.
, Digital mixers and A/D converters act as - Correct Answer-Phantom
power source for condenser microphones
Biggest difference between dynamic and condenser microphones -
Correct Answer-The way by which acoustical energy is transformed
into electrical energy, one assisted by an electrical source and the
other by a magnet. Both are capable of facilitating a quality audio
recording and are recommended for use in the field of digital
reporting.
Pickup pattern - Correct Answer-Set path in which a microphone will
intercept sound
Cardioid pickup pattern - Correct Answer-Unidirectional - heart-
shaped pattern which reaches out from the diaphragm of a
microphone. Beneficial for single voice located in front of mic while
rejecting additional ambient room sound from behind the mic and
lower sensitivity on the sides
Omnidirectional pickup pattern - Correct Answer-Intercepts sound
from all directions from its placement, meaning it captures sound
equally from all directions. Beneficial for capturing multiple voices
using only one microphone or when you have more speakers than
available recording channels. Use carefully to avoid noisy recordings
or voices covering one another if speaking simultaneously.
