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Question
Which of the above two graphs (a) and (b) (Fig.12.3) representing the human voice is likely to be the male voice? Give a reason for your answer.
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Solution
Usually, the male voice has less pitch (or frequency) as compared to the female voice.
As the time period of wave represented by a graph (a) is more than that of the graph (b), so, graph (a) represents a lower frequency wave than graph (b) and hence is likely to be the male voice.
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