Method and constitution for use of improved condenser type microphone in skin contact mode

Abstract

This invention provides regular capacitor microphone method and rack, wherein, the invention rack is to cover one layer of glue film onto capacitor microphone to seal the regular microphone or to open one holes or to form one buffer area. The above method and rack can match with one filter amplifying unit and filter the microphone output electrical signals low echo and to provide gains increasing with frequency to achieve best frequency responding.

Description

technical field [0001] The invention relates to a condenser microphone, in particular to a condenser microphone which picks up sound signals by skin contact. Background technique [0002] Traditional condenser microphones generally pick up the sound from the sound source (such as speakers, speakers, audio speakers, etc.) through the vibration of the air. However, the noise of the surrounding environment (such as the sound of wind, the sound of conversations between seats, and the exhaust sound of vehicles passing by at high speed) will inevitably pass through the air along with the sound of the sound source and be collected by the condenser microphone. [0003] In order to solve the noise problem in a noisy environment, a skin-contact microphone has been proposed. This kind of skin-contact microphone is close to the skin of the throat, receives the skin vibration caused by the speaker's voice, and converts it into an electrical signal. Since the vibration of the skin is mu...

AI Technical Summary

Problems solved by technology

Therefore, there is an idea to use the condenser microphone in a way of touching the skin to combine the advantages of the condenser microphone and the skin contact. However, after actual experiments, it is found that the following disadvantages will occur with the current common structure: (1) The vibration of the skin is too strong, resulting in sound distortion and low recognition rate of speech content; (2) Since the air cannot be completely isolated, the condenser microphone is still easily disturbed by the surrounding noise; (3) Since one side of the microphone is close to the skin It will close the microphone and cause low-frequency echo below 500Hz. If it touches the skin of the face, it will also pick up the cranial cavity resonance when the speaker speaks, making the low-frequency echo more serious. These all make it difficult to identify the identity of the speaker.

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