222 citations · 390 across the 37 of their papers we have counts for
8 papers · 1 filter
GMM based multi-stage Wiener filtering for low SNR speech enhancement
Wageesha Manamperi, Prasanga N. Samarasinghe, Thushara D. Abhayapala +1
This paper proposes a single-channel speech enhancement method to reduce the noise and enhance speech at low signal-to-noise ratio (SNR) levels and non-stationary noise conditions.…
A Novel Method for Obtaining Diffuse Field Measurements for Microphone Calibration
Noman Akbar, Glenn Dickins, Mark R. P. Thomas +2
We propose a straightforward and cost-effective method to perform diffuse soundfield measurements for calibrating the magnitude response of a microphone array. Typically, such cali…
Multi-Source DOA Estimation through Pattern Recognition of the Modal Coherence of a Reverberant Soundfield
A. Fahim, P. N. Samarasinghe, T. D. Abhayapala
We propose a novel multi-source direction of arrival (DOA) estimation technique using a convolutional neural network algorithm which learns the modal coherence patterns of an incid…
PSD Estimation and Source Separation in a Noisy Reverberant Environment using a Spherical Microphone Array
Abdullah Fahim, Prasanga N. Samarasinghe, Thushara D. Abhayapala
In this paper, we propose an efficient technique for estimating individual power spectral density (PSD) components, i.e., PSD of each desired sound source as well as of noise and r…
Mode Domain Spatial Active Noise Control Using Sparse Signal Representation
Yu Maeno, Yuki Mitsufuji, Thushara D. Abhayapala
Active noise control (ANC) over a sizeable space requires a large number of reference and error microphones to satisfy the spatial Nyquist sampling criterion, which limits the feas…
PSD Estimation of Multiple Sound Sources in a Reverberant Room Using a Spherical Microphone Array
Abdullah Fahim, Prasanga N. Samarasinghe, Thushara D. Abhayapala
We propose an efficient method to estimate source power spectral densities (PSDs) in a multi-source reverberant environment using a spherical microphone array. The proposed method…