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Bone conduction is one reason why a person's voice sounds different to them when it is recorded and played back. Because the skull conducts lower frequencies better than air, people perceive their own voices to be lower and fuller than others do, and a recording of one's own voice frequently sounds higher than one expects (see voice confrontation).
Magnetostriction headphones, sometimes sold under the label Bonephones, work by vibrating against the side of head, transmitting sound via bone conduction. This is particularly helpful in situations where the ears must be unobstructed, or for people who are deaf for reasons that do not affect the nervous apparatus of hearing .
Von Bekesy is credited with the discovery that at the level of the cochlea, phase shifted bone-conduction signals cancel out air conduction signals. Bone-conduction works because all of the bones of the skull are connected, including the temporal bone, which in turn stimulates the cochlea. Barany (1938) and Herzog & Krainz (1926) were some of ...
The cartilage-conduction transducer is usable at the depth of the water 4m. The cartilage conduction transducer is more sanitary than earphones which have an ear peace filled by sebum. Since the cartilage conduction transducer does not insert in the external auditory canal, it does not cause external otitis and fungal external otitis.
However, with bone conduction (performed by placing a vibrator on the mastoid bone behind the ear), both cochleas are stimulated. IA for bone conduction ranges from 0-20 dB (See Figure 2). Therefore, conventional audiometry is ear specific, with regards to both air and bone conduction audiometry, when masking is applied.
SoundBite Hearing System is a non-surgical bone conduction prosthetic device that transmits sound via the teeth. It is an alternative to surgical bone conduction prosthetic devices, which require surgical implantation into the skull to conduct sound. SoundBite avoids surgery by using the teeth rather than the implanted component.
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