CSD 375- Test 1
In the SI system, the smallest sound pressure variation sufficient to produce an audible 1 KHz. pure tone sound wave for normal human subjects is equal to about _________________ Pascals.
.00002
Which branch of physics studies acoustics?
mechanics
What is the SI unit for length or distance?
meter
How is intensity represented on a time domain spectrograph?
darkness of the marks or brightness of color
A(n)____________________ is a band of vocal tract harmonics displayed in a speech spectrogram when the phonatory source is present.
formant
The array of harmonics in a complex periodic sound source form its...
frequency spectrum
What term describes the energy flow (time averaged energy flux) related to sound pressure and usually described in relation to electronic instruments?
intensity
Which of the following is a fundamental quantity in the SI system?
length
The quantity of time it takes for a periodic sound to complete one cycle is its...
period
The loudness of a sound is related to the physical magnitude of its...
pressure
The decibel is an amplitude...
ratio
The typical length of the "ideal" vocal tract for laboratory analysis is...
17 cm
What are the two main branches of physics?
Classical Physics and Modern Physics
What is the relationship of sound intensity to sound pressure?
Intensity is proportional to the square of pressure.
What is the frequency of a complex periodic sound source?
NOT the frequency of the highest harmonic, not the product of amplitude and frequency
What is the SI unit of force?
Newton
The amount of force acting over a surface is quantified in the SI as...
Newton/Meter2
In physics, the SI measurement unit for work is...
Newtons X meters (Joules)
In physics, a quantity is a...
Property of magnitude or multitude.
The psychological interpretation of a sound's spectrum is called...
Quality or Timbre
What is the difference between speed and velocity?
Speed has no vector; velocity has a vector.
A spectrogram provides a visual representation of sound, including speech, as a function of _________________________.
time
Which of the following is a derived quantity in the SI system?
velocity
On a spectrogram, the _______________________ indicate opening and closing of the glottis during phonation.
vertical striations
Which derived quantity is the measurement unit for intensity?
watts per square meter
