Sciweavers

ICASSP
2008
IEEE
14 years 6 months ago
Ultrasonic Doppler sensor for speaker recognition
In this paper we present a novel use of an acoustic Doppler sonar for multi-modal speaker identification. An ultrasonic emitter directs a 40kHz tone toward the speaker. Reflecti...
Kaustubh Kalgaonkar, Bhiksha Raj
ICASSP
2008
IEEE
14 years 6 months ago
Fast noise tracking based on recursive smoothing of MMSE noise power estimates
We consider estimation of the noise spectral variance from speech signals contaminated by highly nonstationary noise sources. In each time frame, for each frequency bin, the noise...
Jan S. Erkelens, Richard Heusdens
ICASSP
2008
IEEE
14 years 6 months ago
Iterative extrapolation algorithm for data reconstruction over sphere
Given limited or incomplete measurement data on a sphere, a new iterative algorithm is proposed on how to extrapolate signal over the whole sphere. The algorithm is based on a pri...
Wen Zhang, Rodney A. Kennedy, Thushara D. Abhayapa...
ICASSP
2008
IEEE
14 years 6 months ago
Environment-invariant compensation for reverberation using linear post-filtering for minimum distortion
Speaker identification systems work quite well in controlled environments but their performance degrades severely in the presence of the reverberation that is frequently encounte...
Kshitiz Kumar, Richard M. Stern
ICASSP
2008
IEEE
14 years 6 months ago
Investigating automatic assessment of reading comprehension in young children
This paper describes a preliminary investigation into automatic assessment of reading comprehension in young children. In particular we studied the feasibility of automatic scorin...
Matteo Gerosa, Shrikanth Narayanan
ICASSP
2008
IEEE
14 years 6 months ago
Bandlimited signal reconstruction from noisy periodic nonuniform samples in time-interleaved ADCS
In this paper, we propose a time-domain method for uniform signal reconstruction from periodic nonuniform samples of a bandlimited signal when timing-skews are known. The algorith...
Vijay Divi, Gregory W. Wornell
ICASSP
2008
IEEE
14 years 6 months ago
Recent results of rainfall mapping from cellular network measurements
Electromagnetic waves are known to be influenced by atmospheric conditions. Therefore, wireless communications, in which electromagnetic signals carry the information, can be used...
Hagit Messer, Oren Goldshtein, Asaf Rayitsfeld, Pi...
ICASSP
2008
IEEE
14 years 6 months ago
A multi-class MLLR kernel for SVM speaker recognition
Speaker recognition using support vector machines (SVMs) with features derived from generative models has been shown to perform well. Typically, a universal background model (UBM)...
Zahi N. Karam, William M. Campbell
ICASSP
2008
IEEE
14 years 6 months ago
Optimal stochastic dual resource allocation for cognitive radios based on quantized CSI
The present paper deals with dynamic resource management based on quantized channel state information (CSI) for multi-carrier cognitive radio networks comprising primary and secon...
Antonio G. Marqués, Xin Wang, Georgios B. G...
ICASSP
2008
IEEE
14 years 6 months ago
Low-rank covariance matrix tapering for robust adaptive beamforming
Covariance matrix tapering (CMT) is a popular approach to improve the robustness of adaptive beamformers against moving or wideband interferers. In this paper, we develop a comput...
Michael Rübsamen, Christian Gerlach, Alex B. ...