Sciweavers

ICASSP
2011
IEEE
12 years 8 months ago
Sparse channel estimation with lp-norm and reweighted l1-norm penalized least mean squares
The least mean squares (LMS) algorithm is one of the most popular recursive parameter estimation methods. In its standard form it does not take into account any special characteri...
Omid Taheri, Sergiy A. Vorobyov
ICASSP
2011
IEEE
12 years 8 months ago
Occlusion boundary detection using an online learning framework
In this work, a novel occlusion detection algorithm using online learning is proposed for video applications. Each frame of a video is considered as a time-step for which pixels a...
Natan Jacobson, Yoav Freund, Truong Q. Nguyen
ICASSP
2011
IEEE
12 years 8 months ago
Construction of positive time-frequency distributions using dynamic copula
In this paper we propose a novel approach termed as dynamic copula time-frequency distribution (DCTFD) for the construction of positive time-frequency distributions (PTFDs). DCTFD...
Shwan Ashrafi, Hamidreza Amindavar, James A. Ritce...
ICASSP
2011
IEEE
12 years 8 months ago
Itakura-Saito nonnegative matrix factorization with group sparsity
We propose an unsupervised inference procedure for audio source separation. Components in nonnegative matrix factorization (NMF) are grouped automatically in audio sources via a p...
Augustin Lefevre, Francis Bach, Cédric F&ea...
ICASSP
2011
IEEE
12 years 8 months ago
Polynomial expansion detector for uniform linear arrays
In this paper, we design a low complexity linear MMSE decoder to recover the signal transmitted by M mobile users to a base station equipped with N receiving antennas, arranged as...
Antonia Maria Masucci, Øyvind Ryan, M&eacut...
ICASSP
2011
IEEE
12 years 8 months ago
Design of robust steerable broadband beamformers incorporating microphone gain and phase error characteristics
Beamformers are known to be sensitive to errors and mismatches in their array elements. This paper proposes a robust steerable broadband beamformer design using the Farrow structu...
Chiong-Ching Lai, Sven Nordholm, Yee-Hong Leung
ICASSP
2011
IEEE
12 years 8 months ago
Shout detection in noise
For the task of detecting shouted speech in a noisy environment, this paper introduces a system based on mel frequency cepstral coefficient (MFCC) feature extraction, unsupervise...
Jouni Pohjalainen, Paavo Alku, Tomi Kinnunen
ICASSP
2011
IEEE
12 years 8 months ago
Multichannel EEG analysis based on multi-scale multi-information
Functional connectivity has been widely used to reveal the dependencies between signals in complex networks such as neural networks observed from electroencephalogram (EEG) data. ...
Ying Liu, Selin Aviyente
ICASSP
2011
IEEE
12 years 8 months ago
Using residual vector quantization for image content classification
Multistage residual vector quantizers (RVQ) with optimal direct sum decoder codebooks have been successfully designed and implemented for data compression. Due to its multistage s...
Syed Irteza Ali Khan, Christopher F. Barnes
ICASSP
2011
IEEE
12 years 8 months ago
Noise-robust F0 estimation using SNR-weighted summary correlograms from multi-band comb filters
A noise-robust, signal-to-noise ratio (SNR)-weighted correlogrambased pitch estimation algorithm (PEA) in which a bank of comb filters operates in each of the low, mid, and high ...
Lee Ngee Tan, Abeer Alwan