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a source of sound is moving with a constant velocity of 20 m/s emitting a note of frequency 1000 Hz. the ratio of frequency observed by a stationary observer while the source is approaching him and after it crosses it crosses him will be
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In the early years of the 21st century, the definition of the soundscape was broken down into three components: the geophony, non-biological natural sounds that include the effects of water by a stream or waves at the ocean, the effects of wind in the trees or grasses, and sound generated by the earth, itself, for ...
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