Noise reduction method and structure based on double-microphone Bluetooth earphone
A bluetooth earphone and dual-microphone technology, applied in earphones to reduce environmental noise, microphone signal combination, sensors, etc., can solve the problems of low-frequency noise noise reduction effect is not obvious, voice data is not fully analyzed, noise reduction effect is poor, etc., to achieve The effects of stable card connection, good user experience, and good call experience
Pending Publication Date: 2021-08-17
猫牙(深圳)信息科技有限公司
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Problems solved by technology
Passive noise-canceling earphones mainly block the external noise by surrounding the ears to form a closed space, or use sound-proof materials such as silicone earplugs to block external noise. Since the noise has not been processed by the noise-canceling circuit chip, it can only block high-frequency noise, and has no obvious effect on low-frequency noise. , and the voice data collected by this earphone microphone has not been fully analyzed, and its noise reduction processing for the transmitted voice signal is only performed by the main earphone, and its noise reduction effect is poor
Method used
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Embodiment 1
[0026] Such as Figure 1-4 As shown, the present invention provides a structure based on a dual-microphone bluetooth headset, including a structural body, the structural body includes an earplug 1 and a hanging ear 2 fixed on one side of the earplug 1, the earplug 1 and the hanging ear The connection between the 2 is provided with a noise pickup microphone 4, and the both sides of the noise pickup microphone 4 are respectively provided with a first microphone 13 and a second microphone 14, and the first microphone 13 and the second microphone 14 are located on the The inner side of the hanging ear 2, the end of the hanging ear 2 is covered with a transparent silicone sleeve 5, and the inside of the hanging ear 2 is also provided with a lithium battery 7, a first circuit board 8, a Bluetooth module 9, an antenna 10, a second A circuit board 11 and several sets of indicator lights 12. The inside and outside of the earplug 1 are respectively provided with an active noise reductio...
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The invention discloses a noise reduction method based on a double-microphone Bluetooth headset and a structure thereof, the structure comprises a structure main body, the structure main body comprises an earplug and a hanger fixedly arranged at one side of the earplug, and a noise pickup microphone is arranged at the joint of the earplug and the hanger. A first microphone and a second microphone are arranged on the two sides of the noise pickup microphone respectively, the first microphone and the second microphone are arranged on the inner sides of the hanging lugs, the tail ends of the hanging lugs are sleeved with transparent silicon rubber sleeves, and lithium batteries, first circuit boards, Bluetooth modules, antennas, second circuit boards and a plurality of sets of indicator lamps are further arranged in the hanging lugs. An active noise reduction mechanism and a passive noise reduction mechanism are arranged inside and outside the earplug respectively, the active noise reduction mechanism comprises a primary active noise reduction assembly and a secondary active noise reduction assembly, the uplink noise reduction amount is effectively improved, and the wireless double-Bluetooth earphone can bring better call experience to the far end.
Description
technical field [0001] The invention relates to the technical field of bluetooth earphones, in particular to a noise reduction method and structure based on a dual-microphone bluetooth earphone. Background technique [0002] The most people pay attention to the bluetooth earphone is to listen to the audio quality of music and conversation, often adopt double microphone (microphone microphone) in the prior art in the mode that combines noise reduction algorithm to carry out bluetooth earphone noise reduction, to improve audio quality, and, along with The popularity of terminals, especially mobile terminals and Bluetooth functions is getting higher and higher, and the technology is becoming more and more mature. noise. The active noise reduction function is to generate a reverse sound wave equal to the external noise through the noise reduction system to neutralize the noise, thereby achieving the effect of noise reduction. Active noise-canceling earphones have a noise-cance...
Claims
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IPC IPC(8): H04R1/10H04R3/00
CPCH04R1/1083H04R3/005H04R2420/07
Inventor 林龙涛
Owner 猫牙(深圳)信息科技有限公司