5 Written Questions
5 Matching Questions
- What complicates our perception of loudness?
- What is the challenge of measuring the microphone signal of a person's voice?
- Explain why the articulators would move more for louder speech.
- Why does minimum amplitude level in decibels get higher as you go left to right to the higher Fo's?
- What happens as the radius gets bigger?
- a the signal goes up and down in it's amplitude all the time so it is constantly changing.
- b Fo increases tend to be associated with amplitude increases due to physiological reasons
- c Our hearing is not equally sensitive to all frequencies; it is heavily influenced by the frequency that we are listening to
- d the intensity drops not in proportion to the distance but in proportion to the square of the distance
- 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
- converts electrical energy into acoustic energy
*a home stereo is a transducer
- the amplitude of the signal
- root mean square
- 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
- relative measures as long as you're comparing like with like
5 True/False Questions
What does assembling a psycho physical scale mean? → describes how sound diminishes as the distance from the sound source increases
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
What can RMS be applied to? → the amplitude of the signal
What does WATTS represent? → the amplitude of the signal
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