5 Written Questions
5 Matching Questions
- What is the benefit of a logarithimic scale?
- How is loudness judged?
- What type of characteristic is loudness and what does it correlate to?
- What range do our ears have the greatest sensitivity to sounds?
- What is acoustic power?
- a the middle range around 1000 Hz
- b *how much energy is radiated
*it is measured in watts
*represents the amount of energy transfer in a given amount of time
- c a perceptual characteristic
- d by the human listener
cannot be measured by equipment
- e it is capable of accomodating a large range of numbers in a very straight forward and visually intuitive way
5 Multiple Choice Questions
- Our hearing is not equally sensitive to all frequencies; it is heavily influenced by the frequency that we are listening to
- *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
- 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
- very low frequencies and very high frequencies
- 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
Decibels are a logarithmic measure of what? → intensity
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
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.
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
What can RMS be applied to? → the amplitude of the signal