The method and preprocessor enhances the intelligibility of narrowband speech without essentially lengthening the overall time duration of the signal. Both spectral enhancements and variable-rate time-scaling procedures are implemented to improve the salience of initial consonants, particularly the perceptually...http://www.google.fr/patents/US7065485?utm_source=gb-gplus-shareBrevet US7065485 - Enhancing speech intelligibility using variable-rate time-scale modification
Enhancing speech intelligibility using variable-rate time-scale modification
