COMD 5070 Exam 3 {New 2024/2025 Update} Acoustics of Speech and Hearing, Questions and Verified Answers 100% Correct Graded A
11 views 0 purchase
Course
COMD 5070
Institution
COMD 5070
COMD 5070 Exam 3 {New 2024/2025
Update} Acoustics of Speech and Hearing,
Questions and Verified Answers 100%
Correct Graded A
QUESTION
On a 3D spectrogram, how high does the frequency go relative to the sample rate?
Answer:
- Nyquist frequency (which is twice the frequency of the highest fre...
COMD 5070 Exam 3 (New 2024/2025
Update) Acoustics of Speech and Hearing|
Questions and Verified Answers| 100%
Correct| Graded A
QUESTION
On a 3D spectrogram, how high does the frequency go relative to the sample rate?
Answer:
- Nyquist frequency (which is twice the frequency of the highest frequency component).
QUESTION
If interested at looking at high frequency speech components on a spec- trogram, you should do
what?
Answer:
At least double the sample rate, and give it a little more safety margin above that.
QUESTION
What is a high pass filter?
Answer:
High frequencies pass through, low frequencies are held back.
QUESTION
What is a low pass filter?
Answer:
Low frequencies pass through and high frequencies are held back.
COMD 5070 Exam 3 (New 2024/2025 1
Update) Acoustics of Speech and Hearing
, QUESTION
What is a band pass filter?
Answer:
Allows a band of frequencies to pass through, holds back both higher and lower frequencies.
QUESTION
What is a band reject filter?
Answer:
Allows higher and lower frequencies to pass through, holds back a band of frequencies.
QUESTION
Who created the Fourier transform?
Answer:
Joseph Fourier.
QUESTION
What is the Fourier transform?
Answer:
A way to analyze and split complex sounds.
QUESTION
What are the ideas behind the Fourier transform?
Answer:
- All periodic sounds are made of a combination of sine waves.
- These sine waves may vary in amplitude (how big they are), phase angle (where they are in
cycle relative to each other), and frequency (there can be many frequen- cies present in sound).
COMD 5070 Exam 3 (New 2024/2025 2
Update) Acoustics of Speech and Hearing
, QUESTION
What does the Fourier transform create?
Answer:
A spectrum from a time domain waveform.
QUESTION
What is the FFT?
Answer:
- Fast Fourier Transform
- Term used when applying the Fourier theorem.
QUESTION
What does the FFT do?
Answer:
- Goes from a time domain waveform to a frequency domain display.
- Takes a complex waveform and breaks it into a spectrum that shows individual components.
QUESTION
What is the FFT good and bad at?
Answer:
Reveals the source and harmonic energy but is bad at showing formant energy.
QUESTION
What is stroboscopy?
Answer:
A flash of light that illuminates the vocal folds in a particular position, it is a slow-moving
representation of glottal fold oscillation.
COMD 5070 Exam 3 (New 2024/2025 3
Update) Acoustics of Speech and Hearing
, QUESTION
What happens with a stroboscopy?
Answer:
It captures a variety of different positions from open to closed to resting position over successive
cycles.
QUESTION
What does a stroboscopy rely on?
Answer:
- Animation.
- Has 30 frames/ second.
- Has to sync to fundamental frequency.
QUESTION
What can be viewed in real time?
Answer:
A stroboscopy.
QUESTION
What is vocal perturbation?
Answer:
- When voice is perturbed away from perfectly periodic repetition.
- Includes jitter and shimmer.
QUESTION
What can vocal perturbation be caused by?
Answer:
Neurologic factors, airflow tur- bulence, or pathological tissue change (swelling, nodules, or
polyps).
COMD 5070 Exam 3 (New 2024/2025 4
Update) Acoustics of Speech and Hearing
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 hov. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.99. You're not tied to anything after your purchase.
