Active noise reduction telephone booth for eliminating outside noises

Abstract

The invention discloses an active noise reduction telephone booth for eliminating outside noises. The active noise reduction telephone booth comprises a microphone pickup monitoring unit, an analysis denoising output chip, a loudspeaker, a wire interface, a bluetooth module and a power supply and a control module. According to the active noise reduction telephone booth where a wire can be inserted and pulled, the noises in the environment are monitored through the microphone pickup monitoring unit, noise signals are transmitted to the analysis denoising output chip, noise reduction signal instructions are sent out after operational analysis is performed through the analysis denoising output chip, and sound waves which are opposite to noise in phase and are the same as the noises in amplitude are emitted by the loudspeaker to offset the noises. The problem of low-frequency noises is effectively solved, the tone quality can be improved, the active noise reduction telephone booth has the advantages of being small and exquisite and being capable of being started at any time to be used, and the active noise reduction telephone booth can have a long standby time by adopting a low power consumption technical scheme.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to view more

AI Technical Summary

Benefits of technology

This patented technology helps detect sounds from an area while reducing unwanted background noises that may interfere with their own perceptions or cause discomfort for people nearby. It uses two different types of signals: one has both positive (sound) components but also negative (noise). By comparing these signals together they will find ways to reduce them without affecting any other things around us. Overall this technology improves how we listen comfortably when listening to music on portables like phones over loudspeakers.

Problems solved by technology

Technological Problem: Current Noise Reduction (NR) techniques are limited because they aim at reducing lower frequency noises without sacrificing comfort or performance levels. These traditional approaches have limitations due to poor air tightness and imperfections caused during construction processes. There also exist other ways like adding layers between different parts of a structure to improve its sealability, but these solutions may increase costs compared to existing designs.

Images