The use of general time-frequency distributions as features for automatic speech recognition (ASR) is discussed in the context of hidden Markov classifiers.
We consider measures of time-frequency localization (TFL) for stochastic signals.
Operators which localize both in time and frequency are constructed. They restrict to a finite time interval and cut off low as well as high frequencies (band-pass filters).
We define a set of operators which localize in both time and frequency.
It has been known for some time that frequency-division multiplexing (FDM) of two 4.2-MHz National Television System Committee (NTSC) color television signals onto one microwave radio channel is of
Optical transceivers with more than 50 GBd are now being deployed, while the use of more than 100 GBd is currently under investigation.
Abstract: A time lens based on clock-driven phase modulators followed by linear dispersion accurately removes timing-jitter.
The calibration, or "training," of the numerous mirror-pairs, or switches, in MEMS-mirror OXC systems is a critical process in their manufacture.
Catastrophic optical damage (COD) is analyzed during single current pulse excitation of 975 nm emitting diode lasers. Power transients and thermal images are monitored during each pulse.
Time resolved and cw resonance Raman studies comparing deoxymyoglobin and photodissociated liganded myoglobins over a wide range of temperatures (1.6-230K) have been used to address several fundame
