Most of the existing adaptive noise cancelling techniques produce little improvement in the intelligibility of speech for the hearing impaired in reverberant environments. In this paper we propose two-stage adaptive structures to improve speech intelligibility in noise. The first stage removes the interference and produces a distorted version of the signal. The second stage then removes this distortion and the clean signal is obtained. We suggest two algorithms: an unconstrained and a constrained one for the first stage. In high Signal-to-Noise Ratios (SNR) both perform very well and more than 20dB noise reduction may be achieved. In low SNR the constrained algorithm performs better with a slight increase in the computational load.
|Translated title of the contribution||Two-stage adaptive filtering techniques for noise cancellation in hearing aids|
|Title of host publication||International Symposium on Circuits and Systems|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||521 - 524|
|Publication status||Published - May 1992|
|Event||International Symposium on Circuits and Systems - San Diego, CA, United States|
Duration: 1 May 1992 → …
|Conference||International Symposium on Circuits and Systems|
|City||San Diego, CA|
|Period||1/05/92 → …|
Bibliographical noteConference Proceedings/Title of Journal: IEEE International Symposium on Circuits and Systems, 1992 (ISCAS '92)
Rose publication type: Conference contribution
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