Digital noise reduction filter generating method and device for headset

A filter and digital technology, which is applied in the field of signal processing, can solve the problems of cumbersome and low efficiency in the generation process of noise reduction filters, and achieve the effect of eliminating the debugging process and improving the generation efficiency

Inactive Publication Date: 2017-10-20
GEER TECH CO LTD
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Problems solved by technology

However, in the prior art, the noise reduction filter is usually generated through a complex debugging

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  • Digital noise reduction filter generating method and device for headset
  • Digital noise reduction filter generating method and device for headset
  • Digital noise reduction filter generating method and device for headset

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Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the conte...

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Abstract

The embodiment of the invention provides a digital noise reduction filter generating method and device for a headset. The method comprises: an amplitude response curve and a phase response curve of a first transfer function corresponding to an acoustic channel in a headset are obtained; according to the amplitude response curve and the phase response curve of the first transfer function, an amplitude response curve and a phase response curve of a second transfer function corresponding to a digital noise reduction filter in the headset are determined; on the basis of system identification, a digital noise reduction filter is generated based on the obtained amplitude response curve and phase response curve of the second transfer function. With the system identification, a corresponding expected digital noise reduction filter is generated by fitting only according to the amplitude response curve and phase response curve of the digital noise reduction filter, so that the complicated debugging process is saved and the generation efficiency of the digital noise reduction filter is improved.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a method and device for generating a digital noise reduction filter of an earphone. Background technique [0002] Compared with audio, earphones have many advantages, such as good portability, high privacy, and less impact on the surrounding crowd. Among them, earphones with a noise reduction function are most popular because they can filter the noise signal picked up by the microphone in the earphone, in order to bring a better user experience to the user. [0003] Noise-canceling headphones usually use a noise-canceling filter to achieve noise reduction. However, in the prior art, the noise reduction filter is usually generated only through a complex debugging process, which leads to a cumbersome and inefficient generation process of the noise reduction filter. Contents of the invention [0004] In view of this, an embodiment of the present invention provides a me...

Claims

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Application Information

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IPC IPC(8): H04R1/10H04R3/04
CPCH04R1/1083H04R3/04H04R2201/10H04R2430/00
Inventor 于锴华洋王若蕙
Owner GEER TECH CO LTD
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