Speech Enhancement by Incorporating Speech Presence Probability Based on SNR Discrepancy

Spectral Enhancement By Tracking Speech Presence Probability In Subbands

Speech Enhancement using Laplacian Mixture Model under Signal Presence Uncertainty

In this paper an estimator for speech enhancement based on Laplacian Mixture Model has been proposed. The proposed method, estimates the complex DFT coefficients of clean speech from noisy speech using the MMSE  estimator, when the clean speech DFT coefficients are supposed mixture of Laplacians and the DFT coefficients of  noise are assumed zero-mean Gaussian distribution. Furthermore, the MMS...

Improved a Priori SNR Estimation for Speech Enhancement Incorporating Speech Distortion Component

The well known decision-directed (DD) approach drastically limits the level of musical noise, but the estimated a priori SNR matches the previous frame rather than the current one. Plapous introduced a novel method called two-step noise reduction (TSNR) technique to refine the a priori SNR estimation of the DD approach. However, the performance of this method depends on the accurateness of the ...

Codebook-based speech enhancement using Markov process and speech-presence probability

This paper presents a codebook-based speech enhancement algorithm by using Markov process and speech-presence probability (SPP). The Markov process is utilized to model the correlation between the adjacent code-vectors in the codebook for optimizing Bayesian minimum mean squared error (MMSE) estimator. Then the proposed estimator is used to estimate spectral shapes and gains of speech and noise...

Speech/Noise-Dominant Decision regardless of SNR for Speech Enhancement

In speech enhancement, a decision between speech dominant and noise one is important to reduce noise for increasing intelligibility. This paper presents a speech/noise-dominant decision regardless of SNR. In the proposed decision, the influence of noise is reduced by subtracting the noise component. Therefore, the proposed method decides between the speech dominant and noise one accurately. Fro...