Comparison of Noise Compensation Methods for Room Acoustic Impulse Response Evaluations

2014 ◽  
Vol 100 (2) ◽  
pp. 320-327 ◽  
Author(s):  
M. Guski ◽  
M. Vorländer
Keyword(s):  
Impulse Response ◽  
Noise Compensation ◽  
Compensation Methods

scholarly journals De-Noising Process in Room Impulse Response with Generalized Spectral Subtraction

2021 ◽  
Vol 11 (15) ◽  
pp. 6858
Author(s):  
Min Chen ◽  
Chang-Myung Lee
Keyword(s):  
Noise Reduction ◽  
Impulse Response ◽  
Dynamic Range ◽  
Evaluation Criteria ◽  
Control Measures ◽  
Spectral Subtraction ◽  
Artificial Noise ◽  
Estimation Errors ◽  
Noise Compensation ◽  
Compensation Methods

The generalized spectral subtraction algorithm (GBSS), which has extraordinary ability in background noise reduction, is historically one of the first approaches used for speech enhancement and dereverberation. However, the algorithm has not been applied to de-noise the room impulse response (RIR) to extend the reverberation decay range. The application of the GBSS algorithm in this study is stated as an optimization problem, that is, subtracting the noise level from the RIR while maintaining the signal quality. The optimization process conducted in the measurements of the RIRs with artificial noise and natural ambient noise aims to determine the optimal sets of factors to achieve the best noise reduction results regarding the largest dynamic range improvement. The optimal factors are set variables determined by the estimated SNRs of the RIRs filtered in the octave band. The acoustic parameters, the reverberation time (RT), and early decay time (EDT), and the dynamic range improvement of the energy decay curve were used as control measures and evaluation criteria to ensure the reliability of the algorithm. The de-noising results were compared with noise compensation methods. With the achieved optimal factors, the GBSS contributes to a significant effect in terms of dynamic range improvement and decreases the estimation errors in the RTs caused by noise levels.

Timing performance of large area SiPMs coupled to LYSO using dark noise compensation methods

2011 ◽  
Author(s):  
Claudio Piemonte ◽  
Alberto Gola ◽  
Antonio Picciotto ◽  
Tiziana Pro ◽  
Nicola Serra ◽  
...  
Keyword(s):  
Large Area ◽  
Dark Noise ◽  
Noise Compensation ◽  
Compensation Methods

Designing Time Delay Compensation Methods for Functional Modes Using Sensory Evaluation

2015 ◽  
Vol 135 (7) ◽  
pp. 755-764 ◽  
Author(s):  
Shuhei Shimizu ◽  
Yoshiki Ohno ◽  
Takahiro Nozaki ◽  
Kouhei Ohnishi
Keyword(s):  
Time Delay ◽  
Sensory Evaluation ◽  
Delay Compensation ◽  
Compensation Methods ◽  
Time Delay Compensation

Influence of the Test Voltage Function over Lightning Impulse Response Parameters Measured by Long Cable

2018 ◽  
Vol 138 (3) ◽  
pp. 242-248 ◽  
Author(s):  
Shuji Sato ◽  
Seisuke Nishimura ◽  
Hiroyuki Shimizu ◽  
Hisatoshi Ikeda
Keyword(s):  
Impulse Response ◽  
Lightning Impulse ◽  
Test Voltage
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