Granted Patent B2

US 12,696,036 · App. 18/277,929 · Granted Jul 28, 2026

Inventors: Fei Chen (Shenzhen, CN); Jun-Yu Ji (Shenzhen, CN)

Assignee: Shenzhen Eartech Co., Ltd.

H04R25/453

Abstract

Claims (97)

1 . A howling suppression method, the method comprising:

obtaining audio data;

obtaining a first sub-band signal of a frame signal in the audio data according to the audio data;

determining whether the first sub-band signal is a first howling sub-band signal, comprising: obtaining an energy value of the first sub-band signal according to the first sub-band signal of the frame signal, and comparing the energy value of the first sub-band signal with a preset energy threshold;

in response that the first sub-band signal is the first howling sub-band signal, obtaining a second sub-band signal of the first howling sub-band signal according to the first howling sub-band signal;

determining whether the second sub-band signal is a second howling sub-band signal;

in response that the second sub-band signal is the second howling sub-band signal, determining whether the frame signal is a howling frame signal according to the second howling sub-band signal; and

suppressing the howling frame signal in response that the frame signal is the howling frame signal.

2 . The howling suppression method according to claim 1 , wherein the obtaining the first sub-band signal of the frame signal in the audio data according to the audio data comprises:

obtaining an audio sampling rate according to the audio data;

obtaining frame information according to the audio sampling rate;

obtaining frequency information according to the audio data;

dividing the audio data into audio signals of different preset frequency ranges according to the frequency information;

obtaining a first sub-band signal set by assigning each of the audio signals of different preset frequency ranges to corresponding first channel; and

obtaining the first sub-band signal of the frame signal according to the frame information and the first sub-band signal set.

3 . The howling suppression method according to claim 1 , wherein in response that the first sub-band signal is the first howling sub-band signal, obtaining the second sub-band signal of the first howling sub-band signal according to the first howling sub-band signal comprises:

in response that the first sub-band signal is the first howling sub-band signal, dividing the first howling sub-band signal into first howling sub-band signals of different preset howling frequency ranges;

obtaining a second sub-band signal set by assigning each of the first howling sub-band signals of different preset howling frequency ranges to corresponding second channel; and

obtaining second sub-band signals according to the second sub-band signal set.

4 . The howling suppression method according to claim 1 , wherein the determining whether the second sub-band signal is the second howling sub-band signal comprises:

obtaining an energy value of the second sub-band signal according to the second sub-band signal and obtaining a target second sub-band signal with a largest energy value;

obtaining two energy values of two second sub-band signals adjacent to the target second sub-band signal;

calculating an energy ratio of two adjacent second sub-band signals and the target second sub-band signal according to the energy value of the target second sub-band signal and the two energy values of the two adjacent second sub-band signals; and

determining whether the target second sub-band signal is the second howling sub-band signal by comparing the energy ratio with a preset energy ratio.

5 . The howling suppression method according to claim 4 , wherein in response that the second sub-band signal is the second howling sub-band signal, the determining whether the frame signal is the howling frame signal according to the second howling sub-band signal comprises:

determining that the target second sub-band signal is the second howling sub-band signal in response to the energy ratio being greater than the preset energy ratio;

obtain a marked frame signal by marking the second howling sub-band signal; and

determining whether the frame signal is the howling frame signal according to the marked frame signal.

6 . The howling suppression method according to claim 1 , wherein the suppressing the howling frame signal in response that the frame signal is the howling frame signal comprises:

in response that the frame signal is the howling frame signal, obtaining a second howling suppression sub-band signal by setting the second howling sub-band signal of the howling frame signal as a preset value to suppress the howling frame signal;

obtaining the first howling suppression sub-band signal by combining the second howling suppression sub-band signal with other second sub-band signals; and

obtaining howling suppression audio data by combining the first howling suppression sub-band signal with other first sub-band signals.

7 . A howling suppression apparatus comprising:

an audio acquisition module, is configured to obtain audio data;

a first sub-band acquisition module, is configured to obtain a first sub-band signal of a frame signal in the audio data according to the audio data;

the first sub-band acquisition module, is further configured to determine whether the first sub-band signal is a first howling sub-band signal by obtaining an energy value of the first sub-band signal according to the first sub-band signal of the frame signal, and comparing the energy value of the first sub-band signal with a preset energy threshold;

a second sub-band acquisition module, is configured to obtain a second sub-band signal of the first howling sub-band signal according to the first howling sub-band signal in response that the first sub-band signal is the first howling sub-band signal;

the second sub-band acquisition module, is further configured to determine whether the second sub-band signal is a second howling sub-band signal;

a howling determination module, is configured to determine whether the frame signal is a howling frame signal according to the second howling sub-band signal in response that the second sub-band signal is the second howling sub-band signal; and

the howling determination module, is further configured to suppress the howling frame signal in response that the frame signal is the howling frame signal.

8 . A hearing aid comprising:

a storage device and a processor, the processor executing at least one computer-readable instruction stored in the storage device to implement following functions:

obtaining audio data;

obtaining a first sub-band signal of a frame signal in the audio data according to the audio data;

determining whether the first sub-band signal is a first howling sub-band signal, comprising: obtaining an energy value of the first sub-band signal according to the first sub-band signal of the frame signal, and comparing the energy value of the first sub-band signal with a preset energy threshold;

in response that the first sub-band signal is the first howling sub-band signal, obtaining a second sub-band signal of the first howling sub-band signal according to the first howling sub-band signal;

determining whether the second sub-band signal is a second howling sub-band signal;

in response that the second sub-band signal is the second howling sub-band signal, determining whether the frame signal is a howling frame signal according to the second howling sub-band signal; and

suppressing the howling frame signal in response that the frame signal is the howling frame signal.

9 . The hearing aid according to claim 8 , wherein the obtaining the first sub-band signal of frame signal in the audio data according to the audio data, the processor executing at least one computer-readable instruction to implement following functions:

obtaining an audio sampling rate according to the audio data;

obtaining frame information according to the audio sampling rate;

obtaining frequency information according to the audio data;

dividing the audio data into audio signals of different preset frequency ranges according to the frequency information;

obtaining a first sub-band signal set by assigning each of the audio signals of different preset frequency ranges to corresponding first channel; and

obtaining the first sub-band signal of the frame signal according to the frame information and the first sub-band signal set.

10 . The hearing aid according to claim 8 , wherein in response that the first sub-band signal is the first howling sub-band signal, the obtaining a second sub-band signal of the first howling sub-band signal according to the first howling sub-band signal, the processor executing at least one computer-readable instruction to implement following functions:

in response that the first sub-band signal is the first howling sub-band signal, dividing the first howling sub-band signal into first howling sub-band signals of different preset howling frequency ranges;

obtaining a second sub-band signal set by assigning each of the first howling sub-band signals of different preset howling frequency ranges to corresponding second channel; and

obtaining second sub-band signals according to the second sub-band signal set.

11 . The hearing aid according to claim 8 , wherein the determining whether the second sub-band signal is the second howling sub-band signal, the processor executing at least one computer-readable instruction to implement following functions:

obtaining an energy value of the second sub-band signal according to the second sub-band signal and obtaining a target second sub-band signal with a largest energy value;

obtaining two energy values of two second sub-band signals adjacent to the target second sub-band signal;

calculating an energy ratio of two adjacent second sub-band signals and the target second sub-band signal according to the energy value of the target second sub-band signal and the two energy values of the two adjacent second sub-band signals; and

determining whether the target second sub-band signal is the second howling sub-band signal by comparing the energy ratio with a preset energy ratio.

12 . The hearing aid according to claim 11 , wherein in response that the second sub-band signal is the second howling sub-band signal, determining whether the frame signal is a howling frame signal according to the second howling sub-band signal, the processor executing at least one computer-readable instruction to implement following functions:

determining that the target second sub-band signal is the second howling sub-band signal in response to the energy ratio being greater than the preset energy ratio;

obtain a marked frame signal by marking the second howling sub-band signal; and

determining whether the frame signal is the howling frame signal according to the marked frame signal.

13 . A non-transitory storage medium having at least one computer-readable instruction stored thereon, and the at least one computer-readable instruction being executed by a processor, to implement following functions:

obtaining audio data;

obtaining a first sub-band signal of a frame signal in the audio data according to the audio data;

determining whether the first sub-band signal is a first howling sub-band signal, comprising obtaining an energy value of the first sub-band signal according to the first sub-band signal of the frame signal, and comparing the energy value of the first sub-band signal with a preset energy threshold;

in response that the first sub-band signal is the first howling sub-band signal, obtaining a second sub-band signal of the first howling sub-band signal according to the first howling sub-band signal;

determining whether the second sub-band signal is a second howling sub-band signal;

in response that the second sub-band signal is the second howling sub-band signal, determining whether the frame signal is a howling frame signal according to the second howling sub-band signal; and

suppressing the howling frame signal in response that the frame signal is the howling frame signal.

14 . The non-transitory storage medium according to claim 13 , wherein the obtaining the first sub-band signal of frame signal in the audio data according to the audio data, the processor executing at least one computer-readable instruction to implement following functions:

obtaining an audio sampling rate according to the audio data;

obtaining frame information according to the audio sampling rate;

obtaining frequency information according to the audio data;

dividing the audio data into audio signals of different preset frequency ranges according to the frequency information;

obtaining a first sub-band signal set by assigning each of the audio signals of different preset frequency ranges to corresponding first channel; and

obtaining the first sub-band signal of the frame signal according to the frame information and the first sub-band signal set.

15 . The non-transitory storage medium according to claim 13 , wherein in response that the first sub-band signal is the first howling sub-band signal, the obtaining a second sub-band signal of the first howling sub-band signal according to the first howling sub-band signal, the processor executing at least one computer-readable instruction to implement following functions:

in response that the first sub-band signal is the first howling sub-band signal, dividing the first howling sub-band signal into first howling sub-band signals of different preset howling frequency ranges;

obtaining a second sub-band signal set by assigning each of the first howling sub-band signals of different preset howling frequency ranges to corresponding second channel; and

obtaining second sub-band signals according to the second sub-band signal set.

16 . The non-transitory storage medium according to claim 13 , wherein the determining whether the second sub-band signal is the second howling sub-band signal, the processor executing at least one computer-readable instruction to implement following functions:

obtaining an energy value of the second sub-band signal according to the second sub-band signal and obtaining a target second sub-band signal with a largest energy value;

obtaining two energy values of two second sub-band signals adjacent to the target second sub-band signal;

calculating an energy ratio of two adjacent second sub-band signals and the target second sub-band signal according to the energy value of the target second sub-band signal and the two energy values of the two adjacent second sub-band signals; and

determining whether the target second sub-band signal is the second howling sub-band signal by comparing the energy ratio with a preset energy ratio.

17 . The non-transitory storage medium according to claim 16 , wherein in response that the second sub-band signal is the second howling sub-band signal, determining whether the frame signal is a howling frame signal according to the second howling sub-band signal, the processor executing at least one computer-readable instruction to implement following functions:

determining that the target second sub-band signal is the second howling sub-band signal in response to the energy ratio being greater than the preset energy ratio;

obtain a marked frame signal by marking the second howling sub-band signal; and

determining whether the frame signal is the howling frame signal according to the marked frame signal.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (15)