scholarly journals Improvement of efficiency in reverberation time measurement method using constant signal-to-noise ratio swept sine signal

2016 ◽  
Vol 37 (3) ◽  
pp. 133-135
Author(s):  
Yuki Nakahara ◽  
Yutaka Kaneda
Keyword(s):  
Measurement Method ◽  
Signal To Noise Ratio ◽  
Time Measurement ◽  
Reverberation Time ◽  
Signal To Noise ◽  
Noise Ratio ◽  
Sine Signal

scholarly journals Validity of the Signal-to-noise Ratio Measurement Method for MRI Using a Phase Image

2015 ◽  
Vol 71 (8) ◽  
pp. 678-684
Author(s):  
Kozo Shimizu ◽  
Yuya Yamatani ◽  
Akihiro Nogi ◽  
Toshinari Okamoto
Keyword(s):  
Measurement Method ◽  
Signal To Noise Ratio ◽  
Phase Image ◽  
Signal To Noise ◽  
Ratio Measurement ◽  
Noise Ratio

scholarly journals Children’s Recall of Words Spoken in Their First and Second Language: Effects of Signal-to-Noise Ratio and Reverberation Time

2016 ◽  
Vol 6 ◽  
Author(s):  
Anders Hurtig ◽  
Marijke Keus van de Poll ◽  
Elina P. Pekkola ◽  
Staffan Hygge ◽  
Robert Ljung ◽  
...  
Keyword(s):  
Second Language ◽  
Signal To Noise Ratio ◽  
Reverberation Time ◽  
Signal To Noise ◽  
Language Effects ◽  
Noise Ratio

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.

scholarly journals A Direct Current Measurement Method Based on Terbium Gallium Garnet Crystal and a Double Correlation Detection Algorithm

Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 2997
Author(s):  
Shen ◽  
Chen ◽  
Yu ◽  
Ge ◽  
Han ◽  
...  
Keyword(s):  
Direct Current ◽  
Measurement Method ◽  
Signal To Noise Ratio ◽  
Detection Algorithm ◽  
Current Measurement ◽  
Garnet Crystal ◽  
Signal To Noise ◽  
Control Measurement ◽  
Noise Ratio ◽  
Direct Current Measurement

When applying an optical current transformer (OCT) to direct current measurement, output signals exhibit a low signal-to-noise ratio and signal-to-noise band overlap. Sinusoidal wave modulation is used to solve this problem. A double correlation detection algorithm is used to extract the direct current (DC) signal, remove white noise and improve the signal-to-noise ratio. Our sensing unit uses a terbium gallium garnet crystal in order to increase the output signal-to-noise ratio and measurement sensitivity. Measurement errors of single correlation and double correlation detection algorithms are compared, and experimental results showed that this measurement method can control measurement error to about 0.3%, thus verifying its feasibility.

scholarly journals A novel biosensor with high signal-to-noise ratio for real-time measurement of dopamine levels in vivo

2017 ◽  
Vol 96 (5) ◽  
pp. 817-827 ◽  
Author(s):  
Akimasa Ishida ◽  
Atsushi Imamura ◽  
Yoshitomo Ueda ◽  
Takeshi Shimizu ◽  
Ryosuke Marumoto ◽  
...  
Keyword(s):  
Real Time ◽  
Signal To Noise Ratio ◽  
Time Measurement ◽  
High Signal ◽  
Signal To Noise ◽  
Real Time Measurement ◽  
Noise Ratio
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