Acoustic device
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United States of America Patent
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Oct 6, 2015
Grant Date -
May 15, 2014
app pub date -
Aug 26, 2013
filing date -
Nov 15, 2012
priority date (Note) -
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Abstract
One embodiment of the invention discloses an acoustic device having a housing and a speaker unit accommodated in the housing. The speaker unit forms a front volume and a back volume together with the housing. The housing includes an extra volume communicating with the back volume and a sound channel communicated with the front volume. The extra volume is isolated from the sound channel. The invention provides an acoustic device with enlarged back volume for improving low frequency sound quality.
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