Which of the following is true? Select all that apply.
A) A 3-dB change in sound pressure level is barely perceptible.
B) A 1-dB change in sound pressure level generally goes unnoticed.
C) A 6-dB increase in sound pressure level is generally perceived as twice as loud.
A) A 3-dB change in sound pressure level is barely perceptible.
B) A 1-dB change in sound pressure level generally goes unnoticed.
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The buildup of soil on the grass at the edges of the skinned area is called a:
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