Patent ID: 11956591
Assignee: SHENZHEN SHOKZ CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. An acoustic output device, comprising:
a first acoustic driver including a first diaphragm;
a second acoustic driver including a second diaphragm;
a control circuit electrically connected with the first acoustic driver and the second acoustic driver respectively, wherein
the control circuit provides a first electrical signal for driving a vibration of the first diaphragm, and a second electrical signal for driving a vibration of the second diaphragm, and a phase of the first electrical signal and a phase of the second electrical signal are opposite;

a housing supporting the first acoustic driver and the second acoustic driver, wherein
a sound generated by the vibration of the first diaphragm is radiated outward through a first sound guide hole on the housing, and a sound generated by the vibration of the second diaphragm is radiated outward through a second sound guide hole on the housing; and

a third acoustic driver including a third diaphragm, wherein
the control circuit provides a third electrical signal for driving a vibration of the third diaphragm to generate a low-frequency sound, and
the low-frequency sound is radiated outward through a third sound guide hole and a fourth sound guide hole on the housing,
wherein a sound path difference between a sound emitted from the third sound guide hole to an ear of a user and a sound emitted from the fourth sound guide hole to the ear of the user is greater than a sound path difference between a sound emitted from the first sound guide hole to the ear of the user and a sound emitted from the second sound guide hole to the ear of the user.