A method for sound field equalization and an earphone

A headphone and equalization technology, which is applied in earpiece/headphone accessories, frequency/direction characteristic device, frequency response correction, etc., can solve the problem that the influence of the sound field cannot be offset
CN110996210BActive Publication Date: 2021-11-23BESTECHNIC SHANGHAI CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BESTECHNIC SHANGHAI CO LTD
Publication Date
2021-11-23

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Abstract

The present disclosure relates to a method for sound field equalization and an earphone. The method includes: when the earphone is not placed in the ear canal, determining the first coefficient of the first filter, so that the first filter can simulate the signal distortion caused by the loudspeaker and the in-ear microphone used in the earphone; In the case of the ear canal, the second coefficient of the second filter is determined based on the first audio signal transmitted to the speaker, the second audio signal collected by the in-ear microphone, and the first coefficient of the first filter, so that The second filter can equalize signal distortion caused by ear canal reflection; process the first audio signal with the second filter of the second coefficient to obtain a third audio signal; and play the third audio signal. The above method balances the sound field changes caused by the structure of the human ear canal and the wearing method of the earphone by adjusting the filter coefficients, so as to ensure that the user can obtain high-quality listening experience in different wearing methods.
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Description

technical field

[0001] The present disclosure relates to a sound field equalization method for earphones, and more particularly, to a method for sound field equalization and an earphone. Background technique

[0002] With the progress of society and the improvement of people's living standards, earphones have become an indispensable daily necessities for people; they can enable users to enjoy a comfortable listening experience in various noisy environments such as airports, subways, airplanes, and restaurants. In-ear earphones, especially semi-in-ear earphones, are more and more widely recognized by the market and customers because of their wearing comfort. However, different earphone wearing methods and the structure of the human ear canal greatly affect the sound field of the earphone, and also bring users an unsatisfactory listening experience. In addition, if the frequency response of the speaker is not flat enough, it will also affect the sound field.

[0003] The exi...

Claims

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