Sound insulation sleeve for microphone noise reduction and microphone structure

Abstract

A sound insulation sleeve for microphone noise reduction comprises a sound pickup cavity 1, the sound pickup cavity 1 is in a cone shape with openings at the two ends, a small bottom opening of the sound pickup cavity 1 is connected with a microphone containing cavity 4 with an opening in the top, and the sound pickup cavity 1 and the microphone containing cavity 4 are both formed by sound insulation materials in a surrounding mode. The invention further discloses a microphone structure which comprises the sound insulation sleeve and a microphone which is located in the microphone containing cavity 4, and a sound head of the microphone faces the joint of the pickup cavity 1 and the microphone containing cavity 4. According to the sound insulation sleeve, the conical pickup cavity is designed at the front end of the rubber sleeve; the front-end pickup effect of the microphone is effectively improved, the conical structure suppresses low-angle noise at the same time, the noise reductioneffect is obvious in the speech recognition application environment, the rear-end recognition rate is improved, and the sound insulation sleeve is simple in structure, low in cost, capable of being disassembled, assembled and used and convenient to install on various microphone devices.

Description

technical field [0001] The invention belongs to the field of audio technology, and relates to audio signal acquisition technology, in particular to a sound-proof cover and a microphone structure for microphone noise reduction. Background technique [0002] Microphone, scientifically called microphone, is an energy conversion device that converts sound signals into electrical signals. Microphones have initially developed from converting sound and electricity through resistance to inductive and capacitive conversion. A large number of new microphone technologies have gradually developed, including aluminum strips. , moving coil and other microphones, as well as the widely used condenser microphones and electret microphones. [0003] In traditional applications, microphones are generally used to convert sound signals into electrical signals, and the electrical signals are stored or amplified immediately and converted into audio signals, and then played through speakers; in orde...

AI Technical Summary

Problems solved by technology

[0003] In traditional applications, microphones are generally used to convert sound signals into electrical signals, and the electrical signals are stored or amplified immediately and converted into audio signals, and then played through speakers; in order to facilitate sound collection, the microphone head is generally cylindrical, which can collect various Sounds from different angles, when collecting environmental sounds, it is generally not troublesome if sounds from all angles enter the microphone, but for artificial intelligence speech recognition, the speech recognition device not only needs to record the sound, but also needs to detect the noise in the sound. Eliminate, identify the semantics contained in the speech. After the microphone converts the sound signal into an electrical signal, the superimposed noise signal is difficult to identify in the later stage, resulting in a wrong judgment of the speech semantics. At this time, the input of noise has caused serious damage to the subsequent signal processing. influences

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