WebElephant Trumpeting 112dB at 1 meter. Elephants can produce a variety of sounds from blaring trumpeting calls to low-frequency rumbles far below the human range of hearing. Their calls can be detected and identified by other elephants from 1.5 kilometers away. Web17 feb. 2015 · A 40-foot-long room and a 30-Hz wave works perfectly. Look at the lowest wave like that the speaker produces, we need to have distance to allow for that wave to fit into the room dimensions. The smaller the room, the larger the low frequency pressure issue is. The larger the room, the more the issue shifts to reverberation time or reflections.
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Room modes - Wikipedia
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