Third International Conference on Spoken Language Processing (ICSLP 94)
To raise the audibility of telephone speech for elderly listeners, a telephone speech enhancement method is proposed. The method is based on the compensation of a fundamental frequency (F0) component eliminated or attenuated in the telephone speech. A function of F0 width enhances the F0 component in the spectrum of each F0 estimated frame. In this paper, the enhancement procedure was applied to the speech whose pass- band was restricted to the telephone bandwidth. Sixteen elderly listeners of ordinary hearing levels assessed the enhanced sentence speech quality by the method of paired comparisons. The results confirmed that the enhanced speech was preferred more than untreated telephone-band speech when presented at normal conversational level.
Bibliographic reference. Aritsuka, Toshiyuki / Nejime, Yoshito (1994): "Telephone-band speech enhancement based on the fundamental frequency component compensation", In ICSLP-1994, 1583-1586.