What travels in a wave? - Correct Answer Pressure fluctuation
How is the fundamental frequency calculated? - Correct Answer Greatest common denominator of the component frequencies
Band-Pass Filter - Correct Answer When you combine a high pass filter and a low pass filter, and the high ...
CSD 303 Final Exam
QUESTIONS WITH HIGHEST
RATINGS
What travels in a wave? - Correct Answer Pressure fluctuation
How is the fundamental frequency calculated? - Correct Answer Greatest common denominator of the
component frequencies
Band-Pass Filter - Correct Answer When you combine a high pass filter and a low pass filter, and the
high pass cutoff is lower than the low pass cutoff, you get a band pass filter.
What is the vocal source for vowels and voiced consonants? - Correct Answer Sound waves from the
larynx
What does the vocal source include? - Correct Answer Fundamental frequency and harmonics
What is the source for fricatives? - Correct Answer Turbulence
What location of the obstacle in regards to the airflow will produce more turbulence? - Correct Answer
Perpendicular
What is the source for stops? - Correct Answer Pressure impulse
What is a resonant frequency? - Correct Answer The frequency the object likes to vibrate at
How is pressure reflected in a closed tube vs closed-open tube? - Correct Answer Compression as
compression, rarefaction as rarefaction in a closed tube, compression as rarefaction and vice versa in a
closed-open tube.
, What is a node/antinode? - Correct Answer A node is a peak + trough, and an antinode is a peak + peak,
or node + node.
What is the filter for fricatives? - Correct Answer The front cavity of the vocal tract, in front of the
constriction that causes the turbulence
What is the filter for stops? - Correct Answer For stages 1 and 3, the whole vocal tract filters the the
voicing source, but for stage 2 to 3, the front cavity of the vocal tract in front of the constriction filters
the stop burst.
How does the constriction affect the side branches in nasals? - Correct Answer The farther front the
constriction is, the larger the side branch
What is Helmholtz resonance? - Correct Answer A low frequency resonance that usually ends up being
the first fundamental frequency of vowels that are made in this configuration
What is the acoustic consequence of branching filters for nasals? - Correct Answer The frequencies
resonant to the oral cavity are not transmitted out of the vocal tract and don't appear in the acoustic
output: they are "absorbed" in the side branch and become anti-resonances
What is the relationship between harmonics and formants? - Correct Answer The resonance at these
formant frequencies means that the nearby harmonics are enhanced
What is sampling and quantization? - Correct Answer Sampling is choosing points in time to measure,
whereas quantization is choosing values for the measurements
Short Window - Correct Answer Wideband spectrogram, better temporal resolution, worse frequency
resolution, easier to see formants and vowel information
Long Window - Correct Answer Narrowband spectrogram, worse temporal resolution, better frequency
resolution, easier to see harmonics and pitch information
What does FFT tell us about? - Correct Answer Harmonics
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