we make sure that sound in large movie hall does not echo
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No, we can not hear a echo of sound in a cinema hall because in the cinema hall the wall are made up with few sound absorbing materials which absorb the extra sound and only once the sound is heard without echo.
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tanmaybhere100:
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No.. we cant listen because the echo needs maximum distance 17m but in cinema hall there is no 17m distance ..for to get and again reflect back
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