definition of noise
Saxena844:
the sound which is unpleasant and loud and our ear does not want it to hear is called Noise
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sound, especially one that is loud or unpleasant or that causes disturbance
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unpleasant to hear . could even go above 20000 Hz.
no above 20000hz will be ultrasound which we can't hear so the noise can't be above 20000hz
but I can not told this I also know this
i am not understanding waht you are saying
I mean you are wrong
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