Each Key on a Touch-Tone Telephone Makes a Slightly Different

question 157

Multiple Choice

Each key on a touch-tone telephone makes a slightly different sound when touched.This difference is due to the pitch of sound produced by each key.The difference in pitch is determined by the _____ of the sound waves coming from each key.

• A)intensity
• B)timbre
• C)decibel
• D)frequency

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Definitions:

Annual

Occurring once every year.

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