| 摘要 |
FIELD: acoustics.SUBSTANCE: invention relates to acoustics, particularly to devices for transmitting acoustic signal to user. Device includes piezoelectric element, vibration plate held by case, wherein vibration plate is made with possibility of oscillation by piezoelectric element, and sound vibrations transmitted by vibration plate are detected by user auricle by means of bone and air conductivity. Piezoelectric element varies due to filtered audio signal, wherein part of components exceeding preset threshold value is removed. Vibrating plate is made capable to bend piezoelectric element so that part of vibration plate directly above piezoelectric element protrudes relative to adjacent sections of vibration plate in direction of long side of piezoelectric element. At that, attenuation coefficient of processed audio signal in relation to mono audio signal increases gradually or in steps at higher frequencies. Reproduced audio signal comprises sound at frequency from 0.4 to 3.4 kHz, and given threshold value can be any from frequency band from 0.4 to 3.4 kHz.EFFECT: high sound quality.9 cl, 12 dwg |
