NAME: ________________________

COMD 5070 Speech Intensity Test

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5 Written Questions

5 Matching Questions

  1. What is the benefit of a logarithimic scale?
  2. How is loudness judged?
  3. What type of characteristic is loudness and what does it correlate to?
  4. What range do our ears have the greatest sensitivity to sounds?
  5. What is acoustic power?
  1. a the middle range around 1000 Hz
  2. b *how much energy is radiated
    *it is measured in watts
    *represents the amount of energy transfer in a given amount of time
  3. c a perceptual characteristic
  4. d by the human listener
    cannot be measured by equipment
  5. e it is capable of accomodating a large range of numbers in a very straight forward and visually intuitive way

5 Multiple Choice Questions

  1. Our hearing is not equally sensitive to all frequencies; it is heavily influenced by the frequency that we are listening to
  2. *distance is crucial: it must be known or at least kept constant from one session to another because of the inverse square law
    *keep mouth to mic distance constant
    *keep input settings constant for each session
  3. the amount of energy that can be transferred by the system
    *in the case of a music system, the energy comes from a battery or from the electrical wall socket and the output from this system is acoustic energy
  4. very low frequencies and very high frequencies
  5. 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 True/False Questions

  1. Decibels are a logarithmic measure of what?intensity


  2. Ideas to keep in mind when using VRP in practice are:*somewhat time consuming to collect all the data points
    *useful for voice disordered patients
    *practice helps them become better
    *motivation plays a role
    *max effort can vary with instructions
    *be careful to avoid risk of vocal damage


  3. What is the great value in using a decibel scale?it allows us to span a wide range of intensitites using numbers that aren't absolutely enormous or totally minuscule.


  4. How does RMS work?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. What can RMS be applied to?the amplitude of the signal


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