Unsealed earplug-type headset, and device and method for enhancing voice of receiving end

Abstract

The invention provides a device for enhancing voice of a receiving end of an unsealed earplug-type headset. An ear-entering part of the headset is coupled with an ear of a user in an unsealed mode; the device comprises a microphone, a noise filter, a phase compensator, a summer and a loudspeaker unit; the microphone is used for receiving outside noise; the noise filter is used for processing the received outside noise so as to obtain opposite noise of which the phase is opposite to the received outside noise; the phase compensator is used for performing phase compensation on the opposite noise output by the noise filter; the summer is used for summing the opposite noise output by the phase compensator and a voice signal received by the headset; and the loudspeaker unit is used for processing a signal output by the summer so that the amplitude of the opposite noise which is contained in the signal output by a loudspeaker and reaches the ear of the user is the same as the amplitude of the outside noise which reaches the ear of the user through the space, and the phase of the opposite noise is opposite to that of the outside noise.

Description

technical field [0001] The present invention relates to speech enhancement technology, and more specifically, to a speech enhancement device and method for applying active noise control technology to the receiving end of a non-enclosed earplug earphone, and a non-enclosed earplug earphone. Background technique [0002] The improvement of the degree of social informatization enables people to communicate and communicate anytime and anywhere. With the application of earplug-type communication earphones such as monophonic bluetooth earphones and stereo communication earphones, users can continue their work while communicating. However, a large number of applications of electronic equipment bring more and more noise. Communication in a noisy environment seriously affects the clarity and intelligibility of communication voices. When the noise is high to a certain level, not only communication cannot be carried out at all, but also people's hearing and physical and mental health...

AI Technical Summary

Problems solved by technology

That is to say, in non-enclosed earphones, if the above-mentioned feed-forward active noise control technology is adopted, the circuit H is very difficult to realize or is fundamentally physically impossible to realize

In addition, in the case of non-enclosed earphones, the tightness of the coupling between the earplugs and the human ear, and the size of the auricle will all affect P and G, so that the amount of noise reduction may vary when worn by different people. Large difference, resulting in poor noise reduction stability

Therefore, it is difficult to directly apply the traditional feed-forward active noise control technology to the receiver of non-enclosed earphones to improve the signal-to-noise ratio of the voice at the receiver

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