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5 Written Questions

5 Matching Questions

  1. What complicates our perception of loudness?
  2. What is the challenge of measuring the microphone signal of a person's voice?
  3. Explain why the articulators would move more for louder speech.
  4. Why does minimum amplitude level in decibels get higher as you go left to right to the higher Fo's?
  5. What happens as the radius gets bigger?
  1. a the signal goes up and down in it's amplitude all the time so it is constantly changing.
  2. b Fo increases tend to be associated with amplitude increases due to physiological reasons
  3. c Our hearing is not equally sensitive to all frequencies; it is heavily influenced by the frequency that we are listening to
  4. d the intensity drops not in proportion to the distance but in proportion to the square of the distance
  5. e the pressure within the oral cavity is much higher so you would need more forceful closure of the lips for a bilabial stop because if you increased the pressure and didn't increase the lip closure force, you would end up leaking air when you really wanted to have good stop closure

5 Multiple Choice Questions

  1. converts electrical energy into acoustic energy
    *a home stereo is a transducer
  2. the amplitude of the signal
  3. root mean square
  4. 1st: take all of the values + and - of the signal and square them
    2nd: get the average of the squared values (it will be +)
    3rd: get the square root of the average which then gives you the RMS
  5. relative measures as long as you're comparing like with like

5 True/False Questions

  1. What does assembling a psycho physical scale mean?describes how sound diminishes as the distance from the sound source increases

          

  2. What happens when we adjust the loudness of our speech?the intensity drops not in proportion to the distance but in proportion to the square of the distance

          

  3. What can RMS be applied to?the amplitude of the signal

          

  4. What does WATTS represent?the amplitude of the signal

          

  5. Loudness is influenced by what?WATTS divided by a unit area
    *if you take the amount of energy that a stereo is giving out and divide it across the surface of a sphere you see that there's less energy availabe per unit area as that sphere gets larger
    *it is simply spread out over a larger surface

          

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