The Study Of Artificial Ultrasonic Bone Conduction Hearing Device

The reason of causing the sense of hearing barrier is so much, Regarding the different degree, hearing damage should be cured by different assistance instrument .he general deaf patient only use the hearing aid that may help them to enhance the hearing, however the hearing aid is helpless to those whose inner ear wool cell suffered injury. Generally, the human's hearing range is between 20Hz and 20kHz.The sound wave above 20kHz is supersonic wave. Because supersonic wave can enter inner ear through skull,not directly through external ear,in this way, the ultrasonic transducer can stick on people's head ,which lets people feel the voice.At present, the biology and the medicine technology are limit. Artificial Ultrasonic Bone-Conducted Hearing System can help the deaf person restore the sense of hearing. That the disabled person is restored to health is an important thing which should be paid attention to by the entire society. The value of researching Artificial Ultrasonic Bone-Conducted Hearing System lies in its economy and social significance.Artificial Ultrasonic Bone-Conducted Hearing System concerning the electronics the microelectronics, the material science, the medicine science and other kinds of discipline, it is a system's engineering. In Artificial Ultrasonic Bone-Conducted Hearing System research, pronunciation signal processing is extremely essential. The effect of hearing restores has the direct relation to the pronunciation signal processing method.Artificial Ultrasonic Bone-Conducted Hearing System is a device providing an ultrasonic signal which is produced by modulating speech signal to a portion of the human ear. The system includes a microphone for receiving and converting an acoustic signal to an electrical signal. A frequency transposition device is also provided for converting the electrical signal to an ultrasonic frequency electrical signal. The system also includes a transducer for converting the ultrasonic frequency electric signal to an ultrasonic inertial vibration. The direct drive transducer is adapted to be coupled to a component of an inner or middle ear of man.