FIELD: communication equipment.SUBSTANCE: invention relates to a head phone based on bone conduction and, in particular, to a speaker based on a bone surface. A bone conduction speaker contains: a magnetic circuit component made with the possibility of providing a magnetic field; a vibration component, with at least part of the vibration component located in the magnetic field and converting the electrical signal introduced into the vibration component into a mechanical vibration signal; and a housing containing a housing panel facing the side of the human body, and a rear part of the housing opposite to the housing panel. The housing accommodates a vibration component. The vibrating component causes the housing panel and the back of the housing to vibrate. The vibration of the housing panel has the first phase, and the vibration of the rear part of the housing has the second phase. When the vibration frequency of the housing panel and the vibration frequency of the rear part of the housing are in the range from 2000 to 3000 Hz, the absolute value of the difference between the first phase and the second phase is less than 60 degrees.EFFECT: creation of a bone conduction-based speaker to simplify the structure of a bone conduction-based speaker, reducing sound leakage, and improving sound quality.10 cl, 45 dwg
BONE CONDUCTION-BASED SPEAKER AND ITS TESTING METHOD