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What is meant by 20 decibels effective masking? A. Masking that works B. Masking that produces the desired effect C. Enough masking to raise threshold

What is meant by 20 decibels effective masking?

A. Masking that works

B. Masking that produces the desired effect

C. Enough masking to raise threshold by 20 decibels

D. A favorable signal to noise ratio

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