Mengapa kita menggunakan nada uji sinusoidal saat mengukur signal-to-noise pada saluran bicara daripada hanya sinyal ucapan itu sendiri ?

EDIT: Translation from Indonesian according to Google:

Why do we use a sinusoidal test tone when measuring the signal-to-noise of the speech channel rather than just the speech signal itself?

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    $\begingroup$ i'm not sure that i agree with the premise to the question. $\endgroup$ – robert bristow-johnson Oct 8 '20 at 4:08
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    $\begingroup$ I’m afraid I'll have to vote to close this question because it asks for a reason for something that isn't true. Sadly, there's nothing to answer here. You usually wouldn't use a sinusoidal tone to judge the quality of a speech channel. $\endgroup$ – Marcus Müller Oct 8 '20 at 9:38

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