Silicon microphone with adjustable directivity
A directivity, silicon microphone technology, applied in the field of adjustable directivity silicon microphones, can solve the problems of harsh whistling of speakers, poor sensitivity, distortion and consistency, and achieve low distortion, high sensitivity, and good consistency. Effect
Pending Publication Date: 2019-01-04
GUANGDONG TAKSTAR ELECTRONIC CO LTD
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Problems solved by technology
Under this system, if the silicon microphone has no directivity, the receiving sensitivity of the silicon microphone is the same in all directions, then it will easily cause feedback phenomenon, causing the speaker to emit a harsh howling sound
[0003] At present, there are only omni-directional silicon microphones on the market. Omni-directional silicon microphones have the characteristics of high sensitivity, small distortion and good consistency. In practical applications, we still need to use unidirectional silicon microphones in many occasions. Pointed silicon microphones are less effective in terms of sensitivity, distortion and uniformity
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[0017] In order to describe the technical solutions of the present invention in detail, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0018] Please refer to Figure 1-Figure 6 , the present embodiment provides a silicon microphone with adjustable directivity, comprising the upper cover of the head seat and the lower cover of the sound head seat, a PCBA board is arranged between the upper cover of the head seat and the lower cover of the sound head seat, and the lower cover of the sound head seat There is a...
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The invention relates to the technical field of silicon microphones, and concretely discloses a silicon microphone with adjustable directivity. The silicon microphone includes a capsule seat upper cover and a capsule seat lower cover. A PCBA board is arranged between the capsule seat upper cover and the capsule seat lower cover. Tuning paper is arranged in the capsule seat lower cover. An upper microphone head is arranged on the upper surface of the PCBA board. A lower microphone head is arranged on the lower surface of the PCBA board. The upper microphone head and the lower microphone head ofthe invention can simultaneously pick up an external sound source, arrival time of the external sound source to the lower microphone head is delayed by controlling the density of the tuning paper, and the sound source picked up by the upper microphone head and the lower microphone head is synthetically amplified through the PCBA board and then output. Therefore, the unique characteristics of highsensitivity, low distortion and good consistency of an omnidirectional silicon microphone are maintained, and single-directional pickup demands are satisfied.
Description
technical field [0001] The invention relates to the technical field of silicon microphones, in particular to a silicon microphone with adjustable directivity. Background technique [0002] A complete sound amplification system must at least include a silicon microphone, an amplifier and a speaker to amplify and output the sound. However, its operation method is mainly that the silicon microphone converts the audio signal into an electrical signal, and then the amplifier converts the sound into an electrical signal. The electrical signal is amplified and sent to the speaker, which converts the amplified electrical signal into sound and sends it out. Under this system, if the silicon microphone has no directivity, the receiving sensitivity of the silicon microphone is the same in all directions, which will easily cause feedback phenomenon, resulting in harsh howling sound from the speaker. [0003] At present, there are only omnidirectional silicon microphones on the market. ...
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IPC IPC(8): H04R19/04
CPCH04R19/04H04R2201/003
Inventor 杨志豪杨坤陈华军肖其洪
Owner GUANGDONG TAKSTAR ELECTRONIC CO LTD