scholarly journals Noise Spectrum Estimation Based on SNR Discrepancy for Speech Enhancement

2014 ◽  
Vol E97.D (2) ◽  
pp. 373-377 ◽  
Author(s):  
Atanu SAHA ◽  
Tetsuya SHIMAMURA
Keyword(s):  
Speech Enhancement ◽  
Noise Spectrum ◽  
Spectrum Estimation

α-spectrum estimation for 1/f processes in noisy environments

2019 ◽  
Vol 50 (2) ◽  
pp. 46-55
Author(s):  
Chen Wang ◽  
Yao-Wu Shi ◽  
Lan-Xiang Zhu ◽  
Li-Fei Deng ◽  
Yi-Ran Shi ◽  
...  
Keyword(s):  
Gaussian Distribution ◽  
Stable Distribution ◽  
Noise Spectrum ◽  
Spectrum Estimation ◽  
Noisy Environments ◽  
The Past ◽  
Output Transistor ◽  
Cross Correlations ◽  
Simulation Results ◽  
Non Gaussian

In the past, 1/ f noise was regarded as a stochastic process that accords with Gaussian distribution. According to our studies, the output transistor 1/ f noise can be characterized more accurately as non-Gaussian α-stable distribution rather than Gaussian distribution. We define and consistently estimate the samples normalized cross-correlations of linear S αS processes and propose a samples normalized cross-correlations–based α-spectrum method effective in noisy environments. Simulation results and diodes noise spectrum estimation results exhibit good performance.

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