Speech enhancement for non-stationary noise environments

I Cohen, B Berdugo - Signal processing, 2001 - Elsevier
In this paper, we present an optimally-modified log-spectral amplitude (OM-LSA) speech
estimator and a minima controlled recursive averaging (MCRA) noise estimation approach …

Noise estimation by minima controlled recursive averaging for robust speech enhancement

I Cohen, B Berdugo - IEEE signal processing letters, 2002 - ieeexplore.ieee.org
In this letter, we introduce a minima controlled recursive averaging (MCRA) approach for
noise estimation. The noise estimate is given by averaging past spectral power values and …

Optimal speech enhancement under signal presence uncertainty using log-spectral amplitude estimator

I Cohen - IEEE Signal processing letters, 2002 - ieeexplore.ieee.org
We present an optimally modified log-spectral amplitude estimator, which minimizes the
mean-square error of the log-spectra for speech signals under signal presence uncertainty …

Relaxed statistical model for speech enhancement and a priori SNR estimation

I Cohen - IEEE Transactions on Speech and Audio Processing, 2005 - ieeexplore.ieee.org
In this paper, we propose a statistical model for speech enhancement that takes into account
the time-correlation between successive speech spectral components. It retains the …

Speech enhancement by MAP spectral amplitude estimation using a super-Gaussian speech model

T Lotter, P Vary - EURASIP Journal on Advances in Signal Processing, 2005 - Springer
This contribution presents two spectral amplitude estimators for acoustical background noise
suppression based on maximum a posteriori estimation and super-Gaussian statistical …

Noise spectrum estimation in adverse environments: Improved minima controlled recursive averaging

I Cohen - IEEE Transactions on speech and audio processing, 2003 - ieeexplore.ieee.org
Noise spectrum estimation is a fundamental component of speech enhancement and
speech recognition systems. We present an improved minima controlled recursive …

Codebook driven short-term predictor parameter estimation for speech enhancement

S Srinivasan, J Samuelsson… - IEEE Transactions on …, 2005 - ieeexplore.ieee.org
In this paper, we present a new technique for the estimation of short-term linear predictive
parameters of speech and noise from noisy data and their subsequent use in waveform …

A noise-estimation algorithm for highly non-stationary environments

S Rangachari, PC Loizou - Speech communication, 2006 - Elsevier
A noise-estimation algorithm is proposed for highly non-stationary noise environments. The
noise estimate is updated by averaging the noisy speech power spectrum using time and …

Simultaneous detection and estimation approach for speech enhancement

A Abramson, I Cohen - IEEE Transactions on Audio, Speech …, 2007 - ieeexplore.ieee.org
In this paper, we present a simultaneous detection and estimation approach for speech
enhancement. A detector for speech presence in the short-time Fourier transform domain is …

Speech enhancement using a minimum-mean square error short-time spectral amplitude estimator

Y Ephraim, D Malah - IEEE Transactions on acoustics, speech …, 1984 - ieeexplore.ieee.org
This paper focuses on the class of speech enhancement systems which capitalize on the
major importance of the short-time spectral amplitude (STSA) of the speech signal in its …