The effects of binaural spectral resolution mismatch on Mandarin speech perception in simulated electric hearing.
This study assessed the effects of binaural spectral resolution mismatch on the intelligibility of Mandarin speech in noise using bilateral cochlear implant simulations. Noise-vocoded Mandarin speech, corrupted by speech-shaped noise at 0 and 5 dB signal-to-noise ratios, were presented unilaterally or bilaterally to normal-hearing listeners with mismatched spectral resolution between ears. Significant binaural benefits for Mandarin speech recognition were observed only with matched spectral resolution between ears. In addition, the performance of tone identification was more robust to noise than that of sentence recognition, suggesting factors other than tone identification might account more for the degraded sentence recognition in noise.
Division of Speech and Hearing Sciences, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Hong Kong. feichen1@hku.hk
Fei
F
Chen
Lena L N
LL
Wong
Qudsia
Q
Tahmina
Behnam
B
Azimi
Yi
Y
Hu
D000161:Acoustic Stimulation; D000328:Adult; D000704:Analysis of Variance; D001302:Audiometry, Speech; D001309:Auditory Threshold; D019929:Cochlear Implantation / Q000295:instrumentation; D003054:Cochlear Implants; D003198:Computer Simulation; D012048:Correction of Hearing Impairment / Q000523:psychology; D003463:Cues; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008960:Models, Psychological; D009622:Noise / Q000009:adverse effects; D010470:Perceptual Masking; D019986:Persons with Hearing Disabilities / Q000523:psychology / Q000534:rehabilitation; D021641:Recognition, Psychology; D012815:Signal Processing, Computer-Assisted; D013018:Sound Spectrography; D013061:Speech Acoustics; D013065:Speech Intelligibility; D013067:Speech Perception; D013997:Time Factors; D055815:Young Adult