Active noise reduction method and hearing aid device

A hearing aid device, comprising:

• a processor, and
• a memory in communication with the processor and storing instructions that, when read by the processor, cause the hearing aid device to:
• obtain, in an active noise reduction mode, current frequency response information and original target frequency response information of a feedforward filter;
• determine, based on the current frequency response information and the original target frequency response information, a current noise reduction depth of the hearing aid device;
• based on determining that the current noise reduction depth does not reach a target noise reduction depth, iteratively adjust an active noise reduction parameter of the hearing aid device until the current noise reduction depth reaches the target noise reduction depth, by:
• updating the active noise reduction parameter of the hearing aid device;
• re-determining, based on the updated active noise reduction parameter, the current frequency response information of the feedforward filter;
• and
• updating, based on the re-determined current frequency response information and the original target frequency response information, the current noise reduction depth of the hearing aid device, wherein the target noise reduction depth is determined based on hearing loss information of a target object;
• and
• based on determining that the current noise reduction depth reaches the target noise reduction depth, perform active noise reduction in the hearing aid device according to the active noise reduction parameter of the hearing aid device.

A non-transitory computer-readable medium storing instructions that, when executed by one or more processors, cause the one or more processors to perform steps comprising:

• obtaining, in an active noise reduction mode, current frequency response information and original target frequency response information of a feedforward filter of a hearing aid device;
• determining, based on the current frequency response information and the original target frequency response information, a current noise reduction depth of the hearing aid device;
• after determining that the current noise reduction depth does not reach a target noise reduction depth, iteratively adjusting an active noise reduction parameter of the hearing aid device until the current noise reduction depth reaches the target noise reduction depth, by:
• updating the active noise reduction parameter of the hearing aid device;
• re-determining, based on the updated active noise reduction parameter, the current frequency response information of the feedforward filter;
• and
• updating, based on the re-determined current frequency response information and the original target frequency response information, the current noise reduction depth of the hearing aid device, wherein the target noise reduction depth is determined based on hearing loss information of a target object;
• and
• after determining that the current noise reduction depth reaches the target noise reduction depth, performing active noise reduction in the hearing aid device according to the active noise reduction parameter of the hearing aid device.