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Monaural intrusive speech intelligibility predictor unit, a hearing aid and a binaural hearing aid system
Monaural intrusive speech intelligibility predictor unit, a hearing aid and a binaural hearing aid system
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机译:单耳侵入性语音清晰度预测器,助听器和双耳助听器系统
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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 sj(m) and xj(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 sj(m) and xj(m) into time-frequency segments Sm and Xm 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 dm estimating an intelligibility of said time-frequency segment Xm, based on said time-frequency segments Sm and Xm or normalized and/or transformed versions {tilde over (S)}m, and {tilde over (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 dm, 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.
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机译:单声道侵入式语音清晰度预测器单元包括:第一和第二输入单元,分别用于提供目标信号的无噪声和有噪和/或经过处理的版本的时频表示s(k,m)和x(k,m) ,k为频点索引,k = 1、2,...。 。 。 ,K和m为时间索引;第一和第二包络提取单元,用于提供信号s j Sub>(m)和x j Sub>(m)的时频子带表示,j是频率子带指数j = 1,2,。 。 。 ,J;第一和第二时频段划分单元,用于将时频子带表示s j Sub>(m)和x j Sub>(m)划分为时频段S m Sub>和X m Sub>对应于N个子带信号的连续采样;中间语音清晰度计算单元,适于基于所述时频段S ,提供用于估计所述时频段X m Sub>的可懂度的中间语音清晰度系数d m Sub> Sub> m Sub>和X m Sub>或归一化和/或转换后的版本{tilde over(S)} m Sub>和{tilde over(X)} m Sub>;最终单声道语音清晰度计算单元,用于通过组合所述中间语音清晰度系数d m Sub>来计算最终单声道语音清晰度预测器,以估计目标信号的所述有噪和/或经处理的版本x的清晰度,或随时间变化的转换版本。助听器包括单声道,介入式清晰度预测器单元,以及可配置信号处理器,其适于控制或影响代表环境声音的一个或多个电输入信号的处理,以使最终语音清晰度预测器d最大化。双耳助听器系统包括第一和第二助听器。
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