NTT DoCoMo to Release Bone Conduction Receiver Mike.Tokyo, Japan, Sept 11, 2006 - (JCN) - NTT DoCoMo will release the Sound Leaf, a bone conduction aberrant conduction cardiac conduction through pathways not normally conducting cardiac impulses, particularly through ventricular tissue. aerotympanal conduction conduction of sound waves to the ear through the air and the tympanum. air conduction conduction of sound waves to the inner ear through the external auditory canal and middle ear. receive microphone, on September 15. The device employs the company's piezoelectric The property of certain crystals that causes them to produce voltage when a mechanical pressure is applied to them such as sound vibrations. This technique is used to build crystal microphones, phonograph cartridges and strain gauges, all of which turn mechanical movement into voltage. The piezoelectric effect also works in reverse, causing an oscillation when the material is subjected to electrical pressure (voltage). bone conduction technology to transmit sound vibration from the skull to the auditory nervous system to enable the hearing impaired and the elderly with difficulty in hearing to effectively communicate via a cellphone. The device measures 115x30x26.5mm when folded, and weighs 52g. Powered by two AAA batteries, the Sound Leaf runs for 25 hours. Copyright [c] 2006 Japan Corporate News Network. All rights reserved. |
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