Loudness of sound is discriminated by

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(A) The loudness of sound is determined by the amplitude of the sound waves.When sound waves enter the ear,they cause the basilar membrane of the coch

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Intensity of movement of basilar fibres of cochlea

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(A) The loudness of sound is determined by the amplitude of the sound waves.When sound waves enter the ear,they cause the basilar membrane of the cochlea to vibrate.The intensity of the movement of these basilar fibres corresponds to the loudness of the sound.Greater amplitude of sound waves leads to more intense vibrations of the basilar membrane,which is then interpreted by the brain as a louder sound.

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