MONAURAL DISTURBING VOICE UNDERSTANDING UNIT, A HEARING AND A BINAURAL HEARING SYSTEM

摘要

A monaural intrusive speech intelligibility predictor unit comprises €¢ First and second input units for providing time-frequency representations s(k,m) and x(k,m) of noise-free and noisy and/or processed versions of a target signal, respectively, k being a frequency bin index, k = 1, 2, ..., K , and m being a time index; €¢ First and second envelope extraction units for providing time-frequency sub-band representations of the signals s j (m) and x j (m) , j being a frequency sub-band index, j = 1 , 2, ..., J ; €¢ First and second time-frequency segment division units for dividing the time-frequency sub-band representations s j (m) and x j (m) into time-frequency segments S m and X m corresponding to a number N of successive samples of the sub-band signals; €¢ An intermediate speech intelligibility calculation unit adapted for providing intermediate speech intelligibility coefficients d m estimating an intelligibility of said time-frequency segment X m , based on said time-frequency segments S m and X m or normalized and/or transformed versions S m , and X m thereof; and €¢ A final monaural speech intelligibility calculation unit for calculating a final monaural speech intelligibility predictor d estimating an intelligibility of said noisy and/or processed version x of the target signal by combining said intermediate speech intelligibility coefficients d m , or a transformed version thereof, over time. A hearing aid comprises a monaural, intrusive intelligibility predictor unit, and a configurable signal processor adapted to control or influence the processing of one or more electric input signals representing environment sound to maximize the final speech intelligibility predictor d . A binaural hearing aid system comprises first and second hearing aids.