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AUDIO MEASUREMENT SYSTEMS
Acoustics 2 Study Guide
10
Engineering
Undergraduate 4
07/15/2013

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Cards

Term
WHAT ADVANTAGES DOES A PARAMETRIC EQ HAVE COMPARED TO A GRAPHIC EQ?
Definition
Adjustable center frequency and adjustable bandwidth
Term
WHAT IS COMPLIMENTARY EQUALIZATION?
Definition
•Creating the opposite in gain
•Matching the Bandwidth
•Matching the Center frequency
Term
WHAT IS ERROR IN CENTER FREQUENCY?
Definition
When the center frequency of the anomaly and the center freq of the correction do not match.
Term
WHAT IS ERROR IN BANDWIDTH?
Definition
When the bandwidth of the anomaly and the bandwidth of the correction do not match.
Term
WHAT IS COMB FILTERING?
Definition
Two signals arriving at different times near equal amplitude; causing cancellation of linear frequencies.
Term
WHAT ARE THE TWO INDEPENDENT FACTORS THAT DETERMINE THE MAGNITUDE AND FREQUENCY RESPONSE OF COMB FILTERING?
Definition
•Time Offset
•Level Offset
Term
HOW DO YOU CALCULATE FOR COMB FILTERING?
Definition
•F = 1/t(seconds)
•1st null = f/2
Term
WHY IS IT CALLED COMB FILTERING?
Definition
On a linear scale it looks like the bristles of a comb.
Term
WHAT ACTIONS COULD YOU TAKE TO REDUCE COMB FILTERING?
Definition
•Delays
•Level offset
•High Pass Filters
•Noise Gates
Term
WHY ARE EQ’s BLAMED FOR POOR RESULTS WHEN TRYING TO CORRECT COMB FILTERING?
Definition
It’s a time problem, it cannot be corrected with frequency.
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