Sciweavers

ICASSP
2008
IEEE
14 years 3 months ago
Directional dependency of cepstrum on vocal tract length
Daisuke Saito, Ryo Matsuura, Satoshi Asakawa, Nobu...
ICASSP
2008
IEEE
14 years 3 months ago
Frame-based acoustic feature integration for speech understanding
With the purpose of improving Spoken Language Understanding (SLU) performance, a combination of different acoustic speech recognition (ASR) systems is proposed. State a-posteriori...
Loic Barrault, Christophe Servan, Driss Matrouf, G...
ICASSP
2008
IEEE
14 years 3 months ago
Efficient computation of the binary vector that maximizes a rank-deficient quadratic form
The maximization of a full-rank quadratic form over a finite alphabet is NP-hard in both a worst-case sense and an average sense. Interestingly, if the rank of the form is not a ...
George N. Karystinos, Athanasios P. Liavas
ICASSP
2008
IEEE
14 years 3 months ago
Single sideband encoder for music coding in cochlear implants
The restoration of melody perception is a key remaining challenge in cochlear implants. We propose a new sound coding strategy that converts an audio signal into time-varying elec...
Kaibao Nie, Les E. Atlas, Jay Rubinstein
ICASSP
2008
IEEE
14 years 3 months ago
Adaptive score normalization for progressive model adaptation in text independent speaker verification
This paper deals with the interaction between progressive model adaptation and score normalization strategies which are used for reducing the variation in likelihood ratio scores ...
Shou-Chun Yin, Richard Rose, Patrick Kenny
ICASSP
2008
IEEE
14 years 3 months ago
Avoiding divergence in the constant modulus algorithm
One of the most popular algorithms for blind equalization is the Constant Modulus Algorithm (CMA), due to its simplicity and low computational cost. However, if the step-size is n...
Maria D. Miranda, M. T. M. Silva, Vitor H. Nascime...
ICASSP
2008
IEEE
14 years 3 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 3 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 3 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 3 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