Exam (elaborations)
CD 351 - Final Exam questions with complete solutions graded A+ passed
- Course
- Institution
CD 351 - Final Exam questions with complete solutions graded A+ passed
[Show more]
Content preview
CD 351 - Final ExamWhat is loudness?: - correct answer ✔✔the perceived magnitude of intensity perceptual correlate to
intensity
How do we measure loudness?: - correct answer ✔✔you cannot be given a dB value because it is
different from person to person. Clinically, you may rank noises from soft to loud in both direct and
indirect manners
how is loudness measured (direct/indirect)?: - correct answer ✔✔- direct: Sone scale, Steven's power
function
- indirect: Phon scale, Fletcher-Munson equal loudness curve
what is alternating loudness balance?: - correct answer ✔✔- test where you adjust the second sound
until it has the same loudness as the first
- occurs in the same ear
what is simultaneous loudness balance?: - correct answer ✔✔sound 1 is constant in one ear and sound 2
is adjusted in the other ear until they are perceived to be the same loudness
True or False: The pitches have to be the same when measuring loudness indirectly. - correct answer
✔✔False, you can measure different pitches and sounds
what is the Fletcher-Munson graph?: - correct answer ✔✔it depicts the level and frequency required to
have the second sound equivalent to an original set tone
how do you read the Fletcher-Munson graph?: - correct answer ✔✔if you hear a frequency of X-AXIS
VALUE, it requires a loudness of Y-AXIS VALUE to sound the same as the original tone (typically 1,000 Hz
@ given loudness)
, what is the 10 phon line?: - correct answer ✔✔it represents tones with equal loudness @10 dB for a
given frequency
how does loudness grow?: - correct answer ✔✔perception of loudness relies on frequency. Grows more
rapidly at low frequencies and linearly after that
True or False: Loudness perception relies on frequency. - correct answer ✔✔True
True or False: Mid-frequencies tend to have equal dB SPL values. - correct answer ✔✔True
True or False: The frequency makes a big difference in intensity perception for any given intensity. -
correct answer ✔✔False, for loud sounds (higher dB values) frequency has a less significant effect.
What is the minimum audible field?: - correct answer ✔✔the threshold for tones coming from a speaker
What do equal loudness contours show?: - correct answer ✔✔that loudness relies on frequency
what is a problem with the phon scale?: - correct answer ✔✔we do not know how much louder 40 phon
is to 20 phon
what is magnitude estimation?: - correct answer ✔✔you hear 2 sounds, you have to describe the sounds
using qualifiers like 2x, 4x, 1/2, 1/4, etc.
how are numbers chosen for magnitude estimation?: - correct answer ✔✔the person gives arbitrary
numbers that are then averaged to make a common scale
what is magnitude production?: - correct answer ✔✔person is told to adjust the sound until it reaches a
certain numerical value
what does a magnitude estimation graph look like?: - correct answer ✔✔linear after 30dB
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 BravelRadon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82956 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now