Title :
Bimodal perception of spectrum compressed speech
Author :
Paarmann, L.D. ; Wynne, Michael K.
Author_Institution :
Dept. of Electr. Eng., Wichita State Univ., KS, USA
Abstract :
The results of both normal-hearing and profoundly hearing-impaired adults, tested with spectrum-compressed speech via a modified chirp-z algorithm with and without visual stimuli, are reported. Ten normal-hearing adult listeners and three profoundly hearing-impaired adult listeners were asked to identify nonsense syllables presented auditorily and bimodally (audition and vision) via video tape under two conditions: low-pass filtered or unprocessed, and spectrum-compressed. The low-pass filtered and spectrum-compressed speech occupies the same spectral width of 840 Hz; at 900 Hz and above, the attenuation is at least 60 dB. The spectrum compression is performed by means of a modified chirp-z algorithm, and the test results are significant
Keywords :
acoustic filters; hearing; low-pass filters; source coding; speech coding; speech intelligibility; visual perception; -60 dB; 840 Hz; attenuation; auditory presentation; bimodal speech perception; low-pass filtered speech; modified chirp-z algorithm; nonsense syllable identification; profoundly hearing-impaired adults; spectral width; spectrum-compressed speech; video tape; visual stimuli; Auditory system; Chirp; Cochlear implants; Compression algorithms; Equations; Hearing aids; Sampling methods; Speech processing; Testing; Video compression;
Conference_Titel :
Spoken Language, 1996. ICSLP 96. Proceedings., Fourth International Conference on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-3555-4
DOI :
10.1109/ICSLP.1996.607067
