The invention relates to a
hearing aid intelligent
noise reduction and human voice enhancement
system based on electroencephalogram signals, and belongs to the field of
biomedical engineering and acoustic
signal processing. The
system comprises an electroencephalogram
signal acquisition module, a multi-channel
acoustic sensor array, an embedded neural
signal processor, an adaptive beam forming module, a dynamic
speech enhancement engine and a dual-mode
output device, and constructs electroencephalogram-
acoustics joint features by extracting an alpha / theta
wave power ratio, a P300 component and auditory cortical Gamma phase
synchronism. A deep network is driven to separate target voice, a wave
beam direction and a
frequency response curve are dynamically adjusted based on neural feedback, a closed-loop calibration unit is innovatively adopted,
gain is reversely adjusted according to N1-P2 wave amplitude,
heart rate variability and
eye movement data are fused to optimize decisions, and when the signal-to-
noise ratio is-5dB, the voice recognition rate reaches 89%, the auditory fatigue is reduced by 37%, and the decision conflict rate is smaller than 6%. The defects of attention blind area,
noise separation failure and physiological
adaptation of a traditional
hearing aid are overcome. The
system is suitable for the fields of hearing impairment
rehabilitation, special communication and intelligent cabins.