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Sound
Stuff You Should Know
Measurement
Other Stuff You Should Know
Potpourri
100
Sound is measured in this.
What is decibels?
100
Fatigue, stress, and hearing loss can all be induced by this.
What is noise?
100
Speech at 1 foot is typically this dB.
What is 70 dB?
100
Honking horns, loud music, and klaxons are all common sources of this.
What is noise?
100
This is what you use to turn the sound level meter on or off.
What is the switch or button?
200
DOUBLE JEOPARDY!!!!!!!!!!!!!!!!!!!!!!!!
Ambient noise levels can also be called this.
200
The definition of noise.
What is any unwanted or undesirable sound?
200
Frequency is measured in this.
What is hertz?
200
This type of frequency is more powerful and travels much farther.
What is Low?
200
How often a sound level meter must be calibrated by an ANSI certified lab.
What is yearly?
300
Sound level meters should not be used when wind speed exceeds this amount.
What is 12 mph?
300
Acoustical calibrators must be calibrated by a certified lab to ANSI Standards this often.
What is yearly?
300
"A" weighting and "C" weighting can be measured by this.
What is a typical sound level meter?
300
DOUBLE JEOPARDY!!!!!!!
Define sound.
300
Large objects and hard surfaces can do these things to a sound wave.
What is reflect or redirect?
400
DOUBLE JEOPARDY!!!!!!!!!!!!!!!!!!
Sound level meter settings should include these three things.
400
Wind has this effect on a microphone of a sound level meter.
What is causes "noise" and will effect the reading on the meter?
400
The human ear is capable of responding to this range of frequencies.
What is 20 Hz to 20 kHz?
400
High temperatures and high humidity causes sound to do this.
What is travel farther?
400
DOUBLE JEOPARDY!!!!!!!!!!!!!!!!!!!!
YOU must use the acoustical calibrator to calibrate your sound level meter at these times.
500
Sound characteristics can be divided into these four groups.
What is continuous, variable, impulse, and pure tone?
500
The proper way to hold a sound level meter is this.
What is away from the body at a 45-70 degree angle?
500
DOUBLE JEOPARDY!!!!!!!!!!!!!!!!!
Define frequency.
500
Name five common noise sources.
What are industrial operations, business operations, clubs, bars, taverns, amusement parks, and public parks?
500
Complaints become vigorous when the source is this much louder than the ambient.
What is 20 dB?