Anglia Ruskin University
Zheng_2017_3.pdf (385.87 kB)
Download file

Effects of noise suppression and envelope dynamic range compression on the intelligibility of vocoded sentences for a tonal language

Download (385.87 kB)
journal contribution
posted on 2023-08-30, 14:52 authored by Fei Chen, Dingchang Zheng, Yu Tsao
Vocoder simulation studies have suggested that the carrier signal type employed affects the intelligibility of vocoded speech. The present work further assessed how carrier signal type interacts with additional signal processing, namely, single-channel noise suppression and envelope dynamic range compression, in determining the intelligibility of vocoder simulations. In Experiment 1, Mandarin sentences that had been corrupted by speech spectrum-shaped noise (SSN) or two-talker babble (2TB) were processed by one of four single-channel noise-suppression algorithms before undergoing tone-vocoded (TV) or noise-vocoded (NV) processing. In Experiment 2, dynamic ranges of multiband envelope waveforms were compressed by scaling of the mean-removed envelope waveforms with a compression factor before undergoing TV or NV processing. TV Mandarin sentences yielded higher intelligibility scores with normal-hearing (NH) listeners than did noise-vocoded sentences. The intelligibility advantage of noise-suppressed vocoded speech depended on the masker type (SSN vs 2TB). NV speech was more negatively influenced by envelope dynamic range compression than was TV speech. These findings suggest that an interactional effect exists between the carrier signal type employed in the vocoding process and envelope distortion caused by signal processing.



  • Yes



Issue number


Page range


Publication title

Journal of the Acoustical Society of America




Acoustical Society of America

File version

  • Accepted version


  • eng

Legacy posted date


Legacy creation date


Legacy Faculty/School/Department

ARCHIVED Faculty of Medical Science (until September 2018)


Copyright 2017 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in The Journal of the Acoustical Society of America, 142 (3). pp. 1157-1166. ISSN 0001-4966 and may be found at

Usage metrics

    ARU Outputs


    No categories selected