Exam (elaborations)
Speech and Voice Science COMD 5070 Unit 1 Exam (copied cards)
Speech and Voice Science COMD 5070 Unit 1 Exam (copied cards)
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Speech and Voice Science COMD5070 Unit 1 Exam (copied cards)
Which type of spectrogram shows individual vertical glottal pulses (vertical
striations) and has good TIME resolution? - -wide band
-Which type of spectrogram shows horizontal lines that represent
HARMONICS of the voice and has good FREQUENCY resolution? - -narrow
band
-From looking at a spectrogram, you can get a _____________ idea of what's
going on in the voice -kind of like looking at an ______________. - -qualitative,
X-ray
-Women's voices are about ____________________ in their fundamental
frequency than men's are. - -an octave higher
-What is spectral slope? - -The amplitude of the harmonics resulting from
vocal fold vibration falls off by 12 dB per octave. This means that each time
the frequency doubles, the amplitude of the harmonics decreases by 12 dB.
This is called the spectral slope (or tilt or roll-off) in the source spectrum.
-The ____________ spectrum reveals features of the vocal tract transfer
function. - -LPC
-The LPC spectrum shows what the ____________ ____________ has done to the
sounds that were given to it. - -vocal tract
-We have a _______ perception of pitch. - -non-linear
-When you go up one octave with the musical instrument of voice, you have
_______ the frequency. - -doubled
-_______ is a measure of amplitude. - -Intensity
-Root Mean Square (RMS) represents: - -the amplitude of a signal
-Acoustic power represents: - -the amount of energy transfer in a given
amount of time
-Acoustic power is measured in _______. - -watts and describes how energy
is radiated
, -Watts represents: - -the amount of energy that can be transferred by the
system
-A _______ converts electrical energy into acoustic energy. - -transducer
-The ______ _______ law has important implications for measuring SOUND
PRESSURE LEVEL IN DECIBELS because the distance of our measuring device
from the speaker makes and enormous difference. - -inverse square
-The Voice Range Profile (VRP) measures: - -dynamic range, from the lowest
to the highest intensity across a person's fundamental frequency range
-The VRP represents: - -the total capacity of a person to adjust their voice
from what they perceive to be their softest to their loudest and from their
lowest and highest pitch, in combination
-The analog signal from the wire has to be converted to ____________ in order
to be used by a computer, etc. , and vice versa. - -numbers
-Going from a microphone to a computer is an example of
____________________ conversion. - -analog to digital (ADC)
-Going from a CD to the speakers is an example of ______________
conversion. - -digital to analog (DAC)
-PC sound cards belong to which type of conversion ? - -both ADC and DAC
-Microphones and speakers are ____________ devices. - -analog
-Sound is an _______________ function. - -analog
-The frequency with which the numbers are recorded to represent amplitude
values of the sound you are recording is called: - -sampling rate
-If the original sample contains many rapid changes, your sample rate must
be ________ in order to capture those changes. - -higher
-A higher sampling rate gives better: - -fidelity
-What are 3 disadvantages of a higher sample rate requiring bigger files? - -
1. more memory usage
2. more disk space for storage
3. more processing time for computation
-Nyquist frequency - -half the sample rate
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