Exam (elaborations)
COMD 5070 - Final Exam – 122 Q’s and A’s
- Course
- Institution
COMD 5070 - Final Exam – 122 Q’s and A’s
[Show more]
Seller
Follow
Victorious23
Reviews received
Content preview
COMD 5070 - Final Exam – 122 Q’s andA’s 2024-2025
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
-if you want to go up one octave, you ______ the frequency. - -double
-if you want to go down one octave, you ______ the frequency. - -halve
-what does a high pass filter do? - -allows high frequencies through
-what does a low pass filter do? - -allows low frequencies through
-what does a band pass filter do? - -allows a band of frequencies through
(mid)
-what does a band reject filter do? - -holds back/attenuates a band of
frequencies (allows high and low frequencies)
-what does a Fourier transform do? - -creates a spectrum from the time
domain waveform (deconstructs the waveform)
, -what is the cake analogy to a Fourier transform? - -analyze a cake to learn
its ingredients
-what does a time domain display show? - --a waveform represents sound
directly
-air pressure changes over time
-what does a frequency domain display show? - -a line spectrum shows the
frequency components of a periodic sound
-what is a FFT spectrum? - -fast Fourier transform
-shows harmonic energy
-each peak is a harmonic
-less clear at showing formants
-what is FFT reveal more of? - -vocal SOURCE
-what is a LPC spectrum? - -linear predictive coding
-shows spectral envelope (doesn't show individual harmonics)
-good at revealing formants
-what does a LPC spectrum reveal more of? - -vocal tract FILTER
-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
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 Victorious23. 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)
62890 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now