100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
AVIXA CTS-D: Human Perception of Sound Exam Study Guide. $10.49   Add to cart

Exam (elaborations)

AVIXA CTS-D: Human Perception of Sound Exam Study Guide.

 6 views  0 purchase
  • Course
  • Avixa CTS
  • Institution
  • Avixa CTS

AVIXA CTS-D: Human Perception of Sound Exam Study Guide. Logarithm - answeris the exponent of base 10 that equals the value of a number Decibel - answerdescribes a base-ten logarithmic relationship of a power ratio between two numbers. -It uses a logarithmic scale to describe ratios with a ver...

[Show more]

Preview 2 out of 5  pages

  • August 27, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Avixa CTS
  • Avixa CTS
avatar-seller
Thebright
©THEBRIGHT EXAM STUDY SOLUTIONS 8/27/2024 12:01 PM



AVIXA CTS-D: Human Perception of Sound
Exam Study Guide.

Logarithm - answer✔✔is the exponent of base 10 that equals the value of a number

Decibel - answer✔✔describes a base-ten logarithmic relationship of a power ratio between two
numbers.
-It uses a logarithmic scale to describe ratios with a very large range of values that can vary over
several orders of magnitude.
-It is also used for quantifying differences in voltage, distance and sound pressure as they relate
to power.

Decibels can measure what type of values? - answer✔✔Distance, Power, Pressure, or Voltage

Pascal - answer✔✔SI Unit for Pressure

Decibel Formula for Power - answer✔✔dB = 10 * log (P1 / Pr)


Where:


dB = The change in decibels
P1 = The new or measured power measurement
Pr = The original or reference power measurement


if result is positive, the result is an increase, or gain. If it is negative, the result is a decrease, or
loss.

Decibel Formula for Distance - answer✔✔dB = 20 * log (D1 / D2)


Where:

, ©THEBRIGHT EXAM STUDY SOLUTIONS 8/27/2024 12:01 PM


dB = The change in decibels
D1 = The original or reference distance
D2 = The new or measured distance


This as the same as:
db= 10 * log (D1²/D²)

Decibel Formula for Voltage - answer✔✔dB = 20 * log (V1 / Vr)


Where:


dB = The change in decibels
V1 = The new or measured voltage
Vr = The original or reference voltage


db = 10 * log (V1²/V2²)

Reference Level Sound Pressure: 0 dB SPL in Pascals - answer✔✔.00002 Pa / 2x10^-5 Pa / .02
mPa @ 1kHz

Reference Level Voltage (Consumer Electronics): 0dBV in Volts - answer✔✔1 V

Reference Level Voltage (pro AV): 0 dBu in Volts - answer✔✔0.775 V

Reference Level Power: 0 dBW in Watts - answer✔✔1W

Reference Level Power: 0 dBM in milliwatts - answer✔✔1 mW / .001W

Explain negative decibel values - answer✔✔measurement just means "less than before," or in
this case, "less than the reference level. It does not mean the basic unit it represents has a
negative value

Hearing Damage Threshold in dB - answer✔✔120 - 140 dB

Pro-Audio line level in dBu and volts - answer✔✔+4dBu and 1.23 Volts

Consumer Line Level in dBV and milllivolts - answer✔✔-10dBV, 316 mV

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 Thebright. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

72042 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$10.49
  • (0)
  Add to cart