Term
| •WHAT ARE THE 3 PRIMARY FACTORS DETERMINING POWER LOSS IN SPEAKER CABLE RUNS? |
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Definition
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Term
| •NAME 3 ELEMENTS THAT HAVE THE GREATEST EFFECT ON SYSTEM DESIGN? |
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Definition
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Term
| •NAME 3 TYPES OF SPEECH INTELLIGIBILITY MEASUREMENTS? |
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Definition
1. %ALcons- Articulation Loss of Consonants
2. Speech Transmission Index
3. Clarity Ratio-Energy Time Curve
C50-Speech
C80-Concert
Initial Time Delay Gap |
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Term
| •WHAT IS THE NAME USED TO DESCRIBE UNITS OF ABSORPTION? |
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Definition
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Term
| •DEFINE CRITICAL DISTANCE. |
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Definition
The distance from the source where the reverberant and direct sound field are equal in level.
THIS IS ON THE MIDTERM! |
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Term
| •HOW DOES A TEMPERATURE LAPSE AFFECT SOUND? |
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Definition
Sound bends toward the colder air.
The sound ray paths curve upward. During the day, the air temperature is warm close to the ground. This temperature decreases as you increase height. The sound bends toward the sky. |
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Term
| •HOW DOES A TEMPERATURE INVERSION AFFECT SOUND? |
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Definition
Sound bends toward the colder air.
During the night. The air temperature is lower closest to the ground and increases with height. The sound bends toward the ground. |
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Term
| •WHAT IS PURPOSE OF “A WEIGHTING” ON AN SPL METER? |
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Definition
| This contour is designed to approximate the ear at the 40phon level. This weighting is used to measure ambient sound levels. |
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Term
| •WHAT IS PURPOSE OF “C WEIGHTING” ON AN SPL METER? |
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Definition
•This contour approximates the ear’s response at very high sound levels.
•Often used to measure traffic noise. |
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Term
| •WHAT IS THE RECOMMENDED SPL METER WEIGHTING? WHY? |
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Definition
“A” Weighted slow correlates with most standard exposure limitation charts.
•"A" Weighted slow is also recommended because it focuses attention on the frequencies that sound the loudest and are vital for communication. |
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Term
| •NAME SOME COMMONLY USED SPEAKER CABLE CONNECTORS USED BY PROFESSIONAL SOUND COMPANIES (MANUFACTURER AND MODEL). |
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Definition
• NL-4,8
• EP/AP 4,6,8
• POWER |
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Term
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•USING A STANDARD WIRE TABLE WE DETERMINE THAT FOR EACH 300METERS/1000FT OF 10 GAUGE WIRE, WE HAVE IW OF RESISTANCE. HOW MUCH RESISTANCE WOULD AN 80METER RUN OF SPEAKER CABLE HAVE?
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Definition
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Term
| •WHAT DOES THE 5% RULE STATE? |
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Definition
| CABLE RESISTANCE SHOULD NEVER EXCEED 5% OF LOAD RESISTANCE. |
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Term
| •WHAT IS “DAMPING FACTOR”? |
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Definition
| A numerical indication of how well an amplifier can “control” a loudspeaker’s cone motion. FOLLOW THE 5% RULE! |
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Term
•WHAT WOULD BE THE ELECTRICAL DAMPING FACTOR OF A LOUDSPEAKER WITH A DC VOICE COIL RESISTANCE OF 8Ω, AN AMPLIFIER OUTPUT IMPEDANCE OF .001Ω, AND A TOTAL CABLE RESISTANCE OF .53Ω?
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Definition
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