Sciweavers

ICASSP
2011
IEEE
12 years 11 months ago
Localization of non-linguistic events in spontaneous speech by Non-Negative Matrix Factorization and Long Short-Term Memory
Features generated by Non-Negative Matrix Factorization (NMF) have successfully been introduced into robust speech processing, including noise-robust speech recognition and detect...
Felix Weninger, Björn Schuller, Martin Wö...
ICASSP
2011
IEEE
12 years 11 months ago
Closed-form approximation of linear phase IIR digital filters with guaranteed stability
We develop a closed-form approximation algorithm for designing IIR digital filters with linear phase and guaranteed stability. In this algorithm, the stopband and passband edge f...
Masayoshi Nakamoto, Shuichi Ohno
ICASSP
2011
IEEE
12 years 11 months ago
Hardware acceleration of iterative image reconstruction for X-ray computed tomography
X-ray computed tomography (CT) images could be improved using iterative image reconstruction if the 3D conebeam forward- and back-projection computations can be accelerated signif...
Jung Kuk Kim, Zhengya Zhang, Jeffrey A. Fessler
ICASSP
2011
IEEE
12 years 11 months ago
Integer fast lapped orthogonal transform based on direct-lifting of dcts for lossless-to-lossy image coding
Integer lapped orthogonal transforms (LOTs) are vital technologies for the unification of lossless and lossy image coding, called losslessto-lossy image coding. In this paper, we...
Taizo Suzuki, Masaaki Ikehara
ICASSP
2011
IEEE
12 years 11 months ago
Time-frequency analysis compensating missing data for Atrial Fibrillation ECG assessment
We propose a novel algorithm for temporal tracking of the fibrillatory frequency for Atrial Fibrillation (AF) ECG. Both Atrial activity extraction and fibrillatory frequency tra...
Sandun Kodituwakku, Rodney A. Kennedy, Thushara D....
ICASSP
2011
IEEE
12 years 11 months ago
A fast transform for acoustic imaging with separable arrays
Acoustic imaging is a computationally intensive and ill-conditioned inverse problem, which involves estimating high resolution source distributions with large microphone arrays. I...
Flavio P. Ribeiro, Vitor H. Nascimento
ICASSP
2011
IEEE
12 years 11 months ago
Group testing meets traitor tracing
This paper links two a priori different topics, group testing and traitor tracing. Group testing, as an instantiation of a compressed sensing problem over binary data, is indeed e...
Peter Meerwald, Teddy Furon
ICASSP
2011
IEEE
12 years 11 months ago
Stationary Common Spatial Patterns: Towards robust classification of non-stationary EEG signals
Brain-Computer Interfaces (BCIs) allow a user to control a computer application by brain activity as acquired, e.g., by EEG. A standard step in a BCI system is to project the EEG ...
Wojciech Wojcikiewicz, Carmen Vidaurre, Motoaki Ka...
ICASSP
2011
IEEE
12 years 11 months ago
Improving text-independent phonetic segmentation based on the Microcanonical Multiscale Formalism
In an earlier work, we proposed a novel phonetic segmentation method based on speech analysis under the Microcanonical Multiscale Formalism (MMF). The latter relies on the computa...
Vahid Khanagha, Khalid Daoudi, Oriol Pont, Hussein...
ICASSP
2011
IEEE
12 years 11 months ago
HMM-based speech synthesiser using the LF-model of the glottal source
A major factor which causes a deterioration in speech quality in HMM-based speech synthesis is the use of a simple delta pulse signal to generate the excitation of voiced speech. ...
João P. Cabral, Steve Renals, Junichi Yamag...