Exam (elaborations)
COMD 5070 Final Exam With 100% Verified Solutions!!
- Course
- Institution
COMD 5070 Final Exam With 100% Verified Solutions!!
[Show more]
Content preview
COMD 5070 Final Exam With 100%Verified Solutions!!
4 features of the scientific method CORRECT ANSWERS Empirical: based on data
Deterministic: Obeys physical laws, things are not random
Predictive
Parsimonious: Use simplest explanation but no simpler
How many semitones in an octave? CORRECT ANSWERS 12
What is the Nyquist frequency? CORRECT ANSWERS Half the sample rate
The highest frequency the recording is able to reproduce
High pass filter CORRECT ANSWERS Allows high frequencies through
Low pass filter CORRECT ANSWERS Allows low frequencies through
Band pass filter CORRECT ANSWERS Allows a band of frequencies through - holds
back higher and lower frequencies
Band reject filter CORRECT ANSWERS Holds back a band of frequencies - allows high
and low frequencies through
What is the Fourier theorem? CORRECT ANSWERS All periodic sounds are made of a
combination of sine waves. Amplitudes, phase angles and frequencies all vary
What does a Fourier transform create? CORRECT ANSWERS A spectrum from the
time domain waveform
What is the x-axis on a time-domain waveform? CORRECT ANSWERS Time
What is the y-axis on a time-domain waveform? CORRECT ANSWERS Amplitude
What is the x-axis on a frequency-domain line spectrum? CORRECT ANSWERS
Frequency
What is the y-axis on a frequency-domain line spectrum? CORRECT ANSWERS
Amplitude
What is the x-axis on a 3D spectrogram? CORRECT ANSWERS Time
What is the y-axis on a 3D spectrogram? CORRECT ANSWERS Frequency
What does darkness represent on a 3D spectrogram? CORRECT ANSWERS Intensity
, What is a Fast Fourier Transform (FFT)? CORRECT ANSWERS Revealing of source.
Shows harmonic energy and range of harmonics in the sound.
What is Linear Predictive Coding (LPC) CORRECT ANSWERS Revealing of filter.
Shows spectral envelope and where the resonant frequencies are.
What does a line spectrum show? CORRECT ANSWERS A snapshot in time
What does a spectrogram show? CORRECT ANSWERS Speech over time
What is perturbation? CORRECT ANSWERS Rapid and random, i.e. hoarseness
What is modulation? CORRECT ANSWERS Rhythmic change in F0 and amplitude, i.e.
vocal tremor
Tracheal puncture CORRECT ANSWERS Direct, accurate measure of subglottal
pressure during speech
Medical procedure
Esophageal pressure CORRECT ANSWERS Direct measure of subglottal pressure
Person swallows esophageal balloon
Not a very practical or common procedure
Estimating subglottal pressure CORRECT ANSWERS Time when the pressure in the
mouth is the same as below the larynx
Finding intraoral pressure during a particular time - say a series of 'papapapa' and make
your measurements from that
How do you calculate average air flow? CORRECT ANSWERS if 1 liter of air is used...
and phonation lasts for 5 seconds...
average flow = 1/5 liter per second
or 200 cc/second or 0.2 liters/second
flow at a given instant may be different
Ohm's law CORRECT ANSWERS E=IR
Voice, flow and pressure are all linearly related to one another
Estimating laryngeal resistance CORRECT ANSWERS Psub (cmH2O) divided by flow
(L/s)
semitone standard deviation [how do the numbers reflect our perception of intonation in
speech?] CORRECT ANSWERS Comparing SD in Hz would be fine if the mean were
the same for all speakers
Converting to semitones allows easy comparison across speakers - semitones are
scaled appropriately so that they reflect proportional changes
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ElevatedExcellence. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
70840 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now