Whistling sound suppression method, earphone, and storage medium

An earphone, comprising:

• a microphone, a loudspeaker, a processor, and a memory, wherein the memory stores a computer program capable of running on the processor, and when running the computer program, the processor is configured to execute a whistling sound suppression method, comprising:
• obtaining an ambient audio signal, wherein the ambient audio signal is a sound signal in a surrounding environment of the earphone;
• filtering the ambient audio signal according to a preset first filter group to obtain a first audio signal;
• obtaining an ear canal audio signal, wherein the ear canal audio signal is a sound signal when the first audio signal propagates in an ear canal;
• and
• filtering a subsequently obtained ambient audio signal according to a preset second filter group to obtain a second audio signal in response to the ear canal audio signal meets a whistling condition, wherein a gain value of the preset second filter group is smaller than a gain value of the preset first filter group, wherein the ear canal audio signal meeting the whistling condition comprises:
• a local peak-valley difference in a preset local frequency band range where a full-band peak point of the ear canal audio signal is located meets a first condition, and an amplitude change of the ear canal audio signal meets a second condition.

A non-transitory computer-readable storage medium, storing a computer program, wherein when the computer program is executed by a processor, a whistling sound suppression method is realized, comprising:

• obtaining an ambient audio signal, wherein the ambient audio signal is a sound signal in a surrounding environment of an earphone;
• filtering the ambient audio signal according to a preset first filter group to obtain a first audio signal;
• obtaining an ear canal audio signal, wherein the ear canal audio signal is a sound signal when the first audio signal propagates in an ear canal;
• and
• filtering a subsequently obtained ambient audio signal according to a preset second filter group to obtain a second audio signal in response to the ear canal audio signal meets a whistling condition, wherein a gain value of the preset second filter group is smaller than a gain value of the preset first filter group, wherein the ear canal audio signal meeting the whistling condition comprises:
• a local peak-valley difference in a preset local frequency band range where a full-band peak point of the ear canal audio signal is located meets a first condition, and an amplitude change of the ear canal audio signal meets a second condition.