On a spectrum, a sine wave appears as ___________. - a single line
A line spectrum is a _______ in time. - snapshot
What is the x-axis in a speech spectrogram? - X = time
What is the y-axis in a speech spectrogram? - Y = frequency
What does the darkness in a speech spectrogram repre...
COMD 5070 Questions and Answers
On a spectrum, a sine wave appears as ___________. - ✅✅ a single line
A line spectrum is a _______ in time. - ✅✅ snapshot
What is the x-axis in a speech spectrogram? - ✅✅ X = time
What is the y-axis in a speech spectrogram? - ✅✅ Y = frequency
What does the darkness in a speech spectrogram represent? - ✅✅ darkness =
intensity
What is the difference between perturbation and modulation? - ✅✅ modulation
is much slower than random cycle-to-cycle perturbation; modulation is spread
across many cycles
What is jitter? - ✅✅ frequency perturbation
What is shimmer? - ✅✅ amplitude perturbation
What is tremor? - ✅✅ rhythmic change in fundamental frequency and amplitude
Hoarse voices have (high/low) perturbation. - ✅✅ higher
What does tremor sound like? - ✅✅ shakiness in the voice without roughness or
hoarseness
What does low modulation/high perturbation sound like? - ✅✅ rough but not
wobbly.... Sounds like Kermit
What does high modulation/low perturbation sound like? - ✅✅ aka vocal
vibratto
-opera singer
What are two direct ways to measure subglottal pressure? - ✅✅ -tracheal
puncture
-esophageal pressure (swallow sensor)
, How can you estimate subglottal pressure? - ✅✅ produce voiceless bilabial
plosive (pah, pah, pah)
-this is when oral pressure equals subglottal pressure
How do you calculate average air flow? - ✅✅ dividing volume used by time
-for example, if 1 liter of air is used and phonation lasts for 5 seconds
-average flow = 1/5 liters per second = 0.2 L/s
Pressure = ______ times _______ - ✅✅ resistance x flow
How does Ohm's law relate to the voice (equation)? - ✅✅ laryngeal airway
resistance = subglottic pressure / air flow
What is science? What are the 4 features of the scientific method? - ✅✅ -
empirical
-deterministic
-predictive
-parsimonious
What does it mean for science to be empirical? - ✅✅ based on data
What does it mean for science to be deterministic? - ✅✅ obeys physical laws
What does it mean for science to be predictive? - ✅✅ if you do this then that will
happen
What does it mean for science to be parsimonious? - ✅✅ uses the simplest
explanation possible
How many semitones are in one octave? - ✅✅ 12 semitones
How much sampling is enough? - ✅✅ sample at 2x the rate of the highest
frequency (e.g. Data up to 5 khz = sample at 10 khz, data up to 100 Hz = sample at
200 Hz)
What is the Nyquist frequency? - ✅✅ half the sample rate
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 EFT, 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller kharowl. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R184,14. You're not tied to anything after your purchase.
