Monaural intrusive speech intelligibility predictor unit, a hearing aid and a binaural hearing aid system
US10176821B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Feb 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
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 …
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