Recording function optimization system chip and earphone

Abstract

The invention provides a recording function optimization system chip and an earphone. The chip comprises a first microphone, a second microphone and an audio circuit, an all-pass filter in the audio circuit performs delay processing on the first microphone signal based on the spacing distance between the first microphone and the second microphone in the preset direction and the expected directionto obtain a first delay signal, and transmits the first delay signal and the second microphone signal to a synthesizer together to generate an output signal to realize beam forming processing; the available application range can be expanded, the response speed is increased, the circuit area is reduced, the noise is reduced, and the recording tone quality is improved; and besides, the user can knowthe recording quality in real time by feeding back an output signal of recording to the user, so that the delay characteristic of the all-pass filter is controlled through the user operation unit, the change of environmental noise is dynamically responded, and variable environmental conditions are adapted.

Description

technical field [0001] The invention relates to the field of audio output equipment, in particular to a recording function optimization system chip and an earphone. Background technique [0002] Headphones are a pair of conversion units that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers close to the ears; they have become a widely used audio output device, and their functions are becoming increasingly Diversified, earphones capable of recording functions are one of them. [0003] However, first of all, as the noise pollution in the city becomes more and more serious, when recording outdoors or in other noisy environments, the ambient noise will also be recorded when recording through headphones. If the user has high requirements for recording quality, the ambient noise mixed in the recording signal will have a great impact on the normal sound signal. Secondly, most of the existing recording earphones tha...

AI Technical Summary

Problems solved by technology

Secondly, most of the existing recording earphones that can realize the noise reduction function lack a mechanism for dynamically responding to changes in the direction, frequency, and volume of environmental noise, and cannot adapt to changing environmental conditions.

Finally, the existing recording headphones that can achieve noise reduction function lack user-oriented feedback mechanism, and users cannot know the current recording quality in real time, and thus cannot take corresponding measures

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