Audio Engineering Entry-Level Qualification Quiz

Choose the answer that BEST FITS the question:

(Scroll down for answers)

1.  Balanced Line cables are used to:
          A     Reject radio          B     Reject ground loops

2.  Decibels are:
          A     One-tenth of a Bel          B     Percentages of volume

3.  Loudspeakers can be used as:
          A     Class-D amplifier integrators          B     Microphones

4.  Microphones can be:
          A     Dynamic          B     Static

5.  Frequency is the reciprocal of:
          A     Pitch          B     Events in time

6.  The word "Flat," as used by audio engineers, means:
          A     Uniform          B     Below pitch

7.  Human hearing ranges over:
          A     Low organ pedal "C" at 30 hertz up to 4186 hertz - the highest note on the piano
          B     Three decades of frequencies

8.  The Dynamic Range of the CD is 96 decibels.  Human hearing volume range is:
          A     120 decibels          B     99 decibels

9.  Sound Absorbers soak up sound energy by converting it into:
          A     Musical energy          B     Heat energy          C     Light energy

10.  Sound waves in air are:
          A     Longitudinal waves          B     Transverse waves          C     Standing waves

11.  Standing Waves inside rooms make:
          A     Reservations          B     Cancellations          C     Bass notes

12.  Cardioid - ' car - dee - oyd ' (heart-shape) pattern microphones are used to:
          A     Listen to hearts          B     Pick up quietness          C     Hear from preferred directions

13.  A Dipole microphone hears:
          A     All around          B     From opposite directions          C     From the back of the microphone

14.  Two equal magnitude monaural sine signals of the same frequency at 120 degrees relationship,
        mixed together, produce combined output equal to:          
          A     One or the other          B     Twice that of one          C     Half-power

15.  The Inverse Square Law dictates that:
          A     Sound from twice as far away is half as loud          B     Sound from three times as far away is half as loud

16.  Sound is more like:
          A     Radiation          B     Slow blowing air          C     Water waves

17.  Which Microphone Cable wire property most affects audio tone:
          A     Inductance          B     Capacitance          C     Resistance

18.  Frequency Response refers to:
          A     Uniformity          B     Good sound          C     Input/output differences

19.  Power Response refers to:
          A     Magnitude vs. Angle          B     Kilowatt-hour cost          C     Amplifier output

20.  Mixer Channels are:
          A     Preamps          B     Tracks           C     Summed to outputs

scroll down for answers


 1.     A
 2.     A
 3.     A or B   (Plug a speaker into a microphone input and try it!  Be careful too.  Turn the volume up slowly!)
 4.     A
 5.     B
 6.     A
 7.     B
 8.     A
 9.     B  (Sound  waves move air molecules, moving fibers in the absorber creating mechanical energy which loses its power as friction, making heat.)
10.     A
11.     B
12.     C
13.     B
14.     A
15.     B  (Half as loud is -10 dB.  Moving 3.16 times farther from a free-field sound source drops level 10 dB)
16.     A  (Sound waves behave like light waves in terms of interference, diffraction, diffusion and so on.)
17.     B
18.     C
19.     A
20.     A or C