Howling suppression method, hearing aid, and storage medium

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.

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.

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.