Influence of Deutlichkeit value and reverberation time on improved speech intelligibility in reverberant environments because of steady‐state suppression

2006 ◽  
Vol 120 (5) ◽  
pp. 3360-3360
Author(s):  
Nahoko Hayashi ◽  
Nao Hodoshima ◽  
Takayuki Arai ◽  
Kiyohiro Kurisu
Keyword(s):  
Steady State ◽  
Speech Intelligibility ◽  
Reverberation Time ◽  
Reverberant Environments

Chinese speech intelligibility of children in noisy and reverberant environments

2017 ◽  
Vol 27 (10) ◽  
pp. 1357-1363
Author(s):  
Jianxin Peng ◽  
Shengju Wu
Keyword(s):  
Speech Intelligibility ◽  
Signal To Noise Ratio ◽  
Reverberation Time ◽  
Critical Factors ◽  
Older Children ◽  
Signal To Noise ◽  
Wide Range ◽  
Reverberant Environments ◽  
Noise Ratio ◽  
Intelligibility Score

Reverberation time and signal-to-noise ratio in classrooms are critical factors to speech intelligibility. In this study, the combined effect of reverberation time and signal-to-noise ratio on Chinese speech intelligibility of children was investigated in 28 elementary school classrooms in China. The results show that Chinese speech intelligibility scores increase with an increase of signal-to-noise ratio and the age of children, and decrease with an increase of reverberation time in classrooms. Younger children require higher signal-to-noise ratio and shorter reverberation time than older children to understand the speech. The A-weighted signal-to-noise ratio combined with a wide range of reverberation time can be used to predict speech intelligibility score and serve as a criterion for classroom design for elementary schools.

Spatial release from masking in varying spatial acoustic under higher order ambisonic-based sound reproduction system

2021 ◽  
Vol 263 (4) ◽  
pp. 2476-2485
Author(s):  
C. T. Justine Hui ◽  
Yusuke Hioka ◽  
Catherine I. Watson ◽  
Hinako Masuda
Keyword(s):  
Speech Intelligibility ◽  
Higher Order ◽  
Reverberation Time ◽  
Third Order ◽  
First Order ◽  
Sound Reproduction ◽  
Reproduction System ◽  
Reverberant Environments ◽  
Spatial Release ◽  
Release From Masking

A previous study found that spatial release from masking (SRM) could be observed under virtual reverberant environments using a first order Ambisonic-based sound reproduction system, however, poor localisation accuracy made it difficult to examine effect of varying reverberation time on SRM. The present study follows on using higher order Ambisonics (HOA) to examine how benefits from SRM vary in different spatial acoustics. Subjective speech intelligibility was measured where four room acoustics:reverberation time (RT)= 0.7 s (clarity (C50)= 16 dB, 7 dB); RT= 1.8 s (C50= 8 dB, 2 dB) were simulated via a third order Ambisonic system with a 16 channel spherical loudspeaker array. The masker was played from 8 azimuthal angles (0, +-45, +-90, +-135, 180 degrees) while the target speech was played from 0 degree. The listeners are deemed to benefit from SRM if their intelligibility scores were higher when the masker comes from a different angle than that of the target. We found while listeners could benefit from SRM at C50 = 16 dB and 8 dB, the benefit starts to diminish at C50 = 7 dB, and listeners could no longer benefit from SRM at C50 = 2 dB.

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