AAERT CER Exam Questions With Correct
Answers
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
Answers
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
