Patent ID: 11895452
Assignee: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The bone conduction microphone as described in claim 1, wherein the circuit board includes an external circuit board connected with the housing for forming the containment space, and an internal circuit board fixed on a side of the external circuit board facing the containment space; the frame, the vibration member, the external circuit board and the internal circuit board are enclosed with the housing to form the first conduction cavity; the frame is fixed on the side of the internal circuit board away from the external circuit board, and the acoustic channel includes a sound channel connected with the first conduction cavity and a sound hole connected with the sound channel; at least one direction of the external circuit board and the internal circuit board is recessed to form the sound channel, and the sound hole penetrates the internal circuit board.