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

Chen, Fei1; Zheng, Dingchang2; Tsao, Yu3

2017-09

10.1121/1.5000164

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA   影响因子和分区

0001-4966

1520-8524

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. (C) 2017 Acoustical Society of America.

SCI ; EI

英语

第一 ; 通讯

Basic Research Foundation of Shenzhen[JCYJ20160429191402782]

Acoustics ; Audiology & Speech-Language Pathology

Acoustics ; Audiology & Speech-Language Pathology

WOS:000412100700014

ACOUSTICAL SOC AMER AMER INST PHYSICS

20173604134722

Audition ; Signal processing ; Spurious signal noise ; Vocoders

Ergonomics and Human Factors Engineering:461.4 ; Information Theory and Signal Processing:716.1 ; Speech:751.5 ; Sound Recording:752.2

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Xueyuan Rd 1088, Shenzhen 518055, Peoples R China
2.Anglia Ruskin Univ, Hlth & Wellbeing Acad, Chelmsford, England
3.Acad Sinica, Res Ctr Informat Technol Innovat, Taipei, Taiwan

Chen, Fei,Zheng, Dingchang,Tsao, Yu. Effects of noise suppression and envelope dynamic range compression on the intelligibility of vocoded sentences for a tonal language[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,2017,142(3):1157-1166.

Chen, Fei,Zheng, Dingchang,&Tsao, Yu.(2017).Effects of noise suppression and envelope dynamic range compression on the intelligibility of vocoded sentences for a tonal language.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,142(3),1157-1166.

Chen, Fei,et al."Effects of noise suppression and envelope dynamic range compression on the intelligibility of vocoded sentences for a tonal language".JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 142.3(2017):1157-1166.