5 Written questions
5 Matching questions
- What type of characteristic is loudness and what does it correlate to?
- What does WATTS represent?
- What can RMS be applied to?
- What complicates our perception of loudness?
- What does RMS represent?
- a a perceptual characteristic
- b 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
- c periodic sounds
number of harmonic components
- d the amplitude of the signal
- e Our hearing is not equally sensitive to all frequencies; it is heavily influenced by the frequency that we are listening to
5 Multiple choice questions
- describes how sound diminishes as the distance from the sound source increases
- 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
- the intensity drops not in proportion to the distance but in proportion to the square of the distance
- defined mathematically
- converts electrical energy into acoustic energy
*a home stereo is a transducer
5 True/False questions
What range do our ears have the greatest sensitivity to sounds? → the middle range around 1000 Hz
The inverse square law has important implications for what? → measuring sound pressure level in decibels of a person's spoken output because the distance of our measuring device from the speaker makes an enormous difference to the actual decibel values that we measure
Why does minimum amplitude level in decibels get higher as you go left to right to the higher Fo's? → Fo increases tend to be associated with amplitude increases due to physiological reasons
When doing research and publishing it is important to state these 2 things. → measuring sound pressure level in decibels of a person's spoken output because the distance of our measuring device from the speaker makes an enormous difference to the actual decibel values that we measure
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