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ICASSP
2008
IEEE
16 years 1 months ago
Reconstructing sparse signals from their zero crossings
Classical sampling records the signal level at pre-determined time instances, usually uniformly spaced. An alternative implicit sampling model is to record the timing of pre-deter...
Petros Boufounos, Richard G. Baraniuk
ICASSP
2008
IEEE
16 years 1 months ago
Cramer-Rao lower bound on doppler frequency of coherent pulse trains
This paper derives the Cramer-Rao lower bound (CRLB) on estimates of the frequency of a coherent pulse-train passively intercepted at a moving antenna. Such estimates are used to ...
J. Andrew Johnson, Mark L. Fowler
ICASSP
2008
IEEE
16 years 1 months ago
Using dialogue acts to learn better repair strategies for spoken dialogue systems
Repair or error-recovery strategies are an important design issue in Spoken Dialogue Systems (SDSs) - how to conduct the dialogue when there is no progress (e.g. due to repeated A...
Matthew Frampton, Oliver Lemon
ICASSP
2008
IEEE
16 years 1 months ago
Admissible stopping in viterbi beam search for unit selection in concatenative speech synthesis
Corpus-based concatenative speech synthesis is very popular these days due to its highly natural speech quality. The amount of computation required in the run time, however, is of...
Shinichi Sakai, Tatsuya Kawahara, Shun Nakamura
ICASSP
2008
IEEE
16 years 1 months ago
Finding needles in noisy haystacks
The theory of compressed sensing shows that samples in the form of random projections are optimal for recovering sparse signals in high-dimensional spaces (i.e., finding needles ...
Rui M. Castro, Jarvis Haupt, Robert Nowak, Gil M. ...