Sciweavers

ICASSP
2009
IEEE
13 years 8 months ago
Generating high performance pruned FFT implementations
We derive a recursive general-radix pruned Cooley-Tukey fast Fourier transform (FFT) algorithm in Kronecker product notation. The algorithm is compatible with vectorization and pa...
Franz Franchetti, Markus Püschel
ICASSP
2009
IEEE
13 years 8 months ago
Chirp rate estimation of speech based on a time-varying quasi-harmonic model
The speech signal is usually considered as stationary during short analysis time intervals. Though this assumption may be sufficient in some applications, it is not valid for high...
Yannis Pantazis, Olivier Rosec, Yannis Stylianou
ICASSP
2009
IEEE
13 years 8 months ago
Singing voice detection in music tracks using direct voice vibrato detection
In this paper we investigate the problem of locating singing voice in music tracks. As opposed to most existing methods for this task, we rely on the extraction of the characteris...
Lise Regnier, Geoffroy Peeters
ICASSP
2009
IEEE
13 years 8 months ago
Geometrical interpretation and improvements of the Blahut-Arimoto's algorithm
The paper first recalls the Blahut Arimoto algorithm for computing the capacity of arbitrary discrete memoryless channels, as an example of an iterative algorithm working with pro...
Ziad Naja, Florence Alberge, Pierre Duhamel
ICASSP
2009
IEEE
13 years 8 months ago
Frequency invariant MVDR beamforming without filters and implementation using MIMO radar
Abstract-- Frequency invariant beamforming with sensor arrays is generally achieved using filters in the form of tapped delay-lines following each sensor. However it has been recen...
Piya Pal, P. P. Vaidyanathan
ICASSP
2009
IEEE
13 years 8 months ago
From rule-based to statistical grammars: Continuous improvement of large-scale spoken dialog systems
Statistical Spoken LanguageUnderstandinggrammars (SSLUs) are often used only at the top recognition contexts of modern large-scale spoken dialog systems. We propose to use SSLUs a...
David Suendermann, Keelan Evanini, Jackson Liscomb...
ICASSP
2009
IEEE
13 years 8 months ago
Multidimensional signal reconstruction from multichannel acquisition
We provide an analysis of the algorithms necessary for the optimal use of multidimensional signal reconstruction from multichannel acquisition. Firstly, we provide computable cond...
Ka Lung Law, Robert M. Fossum, Minh N. Do
ICASSP
2009
IEEE
13 years 8 months ago
Spoken dialog strategy based on understanding graph search
We regarded information retrieval as a graph search problem and proposed several novel dialog strategies that can recover from misrecognition through a spoken dialog that traverse...
Yuji Kinoshita, Chiyomi Miyajima, Norihide Kitaoka...
ICASSP
2009
IEEE
13 years 8 months ago
Joint estimation of short-term and long-term predictors in speech coders
In low bit-rate coders, the near-sample and far-sample redundancies of the speech signal are usually removed by a cascade of a shortterm and a long-term linear predictor. These tw...
Daniele Giacobello, Mads Græsbøll Chr...
ICASSP
2009
IEEE
13 years 8 months ago
Optimized opportunistic multicast scheduling (OMS) over heterogeneous cellular networks
Optimized opportunistic multicast scheduling (OMS) has been studied previously by the authors for homogeneous cellular networks, where the problem of efficiently transmitting a co...
Tze-Ping Low, Man-On Pun, Yao-Win Peter Hong, C.-C...