US 12,354,584 B2 · Active noise cancellation method and active noise cancellation earphones

Abstract

An active noise cancellation method and active noise cancellation earphones are provided, which may improve a noise cancellation effect of the active noise cancellation earphones. The method includes: determining a first primary path transfer function according to a first out-of-ear data collected by the out-of-ear microphone and a first in-ear data collected by the in-ear microphone when the speaker plays audio data; determining audio data received by the in-ear microphone according to the first in-ear data, the first out-of-ear data and the first primary path transfer function; determining a first secondary path transfer function according to the audio data played through the speaker and the audio data received by the in-ear microphone; and updating an operation coefficient of the filter to a first operation coefficient according to the first primary path transfer function and/or the first secondary path transfer function.

Claims20

Dependent claims

An active noise cancellation method for active noise cancellation earphones, wherein the active noise cancellation earphones comprise an in-ear microphone, an out-of-ear microphone, a speaker and a filter, and the method comprises:

determining a first primary path transfer function according to a first out-of-ear data collected by the out-of-ear microphone and a first in-ear data collected by the in-ear microphone when the speaker plays first audio data;
determining second audio data received by the in-ear microphone according to the first in-ear data, the first out-of-ear data and the first primary path transfer function;
determining a first secondary path transfer function according to the first audio data and the second audio data;
and
updating an operation coefficient of the filter to a first operation coefficient according to the first primary path transfer function and/or the first secondary path transfer function.

2 more elements

Active noise cancellation earphones, wherein the active noise cancellation earphones comprise:

an in-ear microphone, an out-of-ear microphone, a speaker, a filter and a processor, and the processor is configured to:
determine a first primary path transfer function according to a first out-of-ear data collected by the out-of-ear microphone and a first in-ear data collected by the in-ear microphone when the speaker plays first audio data;
determine second audio data received by the in-ear microphone according to the first in-ear data, the first out-of-ear data and the first primary path transfer function;
determine a first secondary path transfer function according to the first audio data and the second audio data;
and
update an operation coefficient of the filter to a first operation coefficient according to the first primary path transfer function and/or the first secondary path transfer function.

3 more elements

Dependencies are inferred from the claim text.

Active noise cancellation method and active noise cancellation earphones

Life of this patent

Active noise cancellation method and active noise cancellation earphones

Life of this patent

Abstract

Claims20