Paul J. Seekings

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—In this paper, we present marine mammal observation statistics, high-frequency seismic source characteristics, and example denoising of marine mammal acoustical recordings using data collected during the mitigation and monitoring program for a 3-D seismic survey by EnCana Corporation, Calgary, AB, Canada, in the Northwest Atlantic during 2003. Marine(More)
The upper limit of frequency sensitivity for vibrotactile stimulation of the fingers and hand is commonly accepted as 1 kHz. However, during the course of our research to develop a full-hand vibrotactile musical communication device for the hearing-impaired, we repeatedly found evidence suggesting sensitivity to higher frequencies. Most of the studies on(More)
The upper limit of frequency sensitivity for vibrotactile stimulation of the fingers and hand is commonly accepted as 1 kHz. However, during the course of our research to develop a full-hand vibrotactile musical communication device for the hearing impaired, we repeatedly found evidence suggesting sensitivity to higher frequencies. Most of the studies on(More)
We introduce a method for encoding co-occurrence of features in the HMAX model of visual recognition, and conduct a series of experiments to investigate the contribution of co-occurrence towards better recognition performance. We show that classification accuracy is increased by adding a higher-order layer to the HMAX processing hierarchy, whereby(More)
We develop and implement a new approach to utilizing color information for object and scene recognition that is inspired by the characteristics of color-and object-selective neurons in the high-level inferotemporal cortex of the primate visual system. In our hierarchical model, we introduce a new dictionary of features representing visual information as(More)
– The Time Reversal Mirror (TRM) technique is a very useful tool in many underwater applications. Its usefulness in reverberation rejection and underwater communications has already been established through experiments by the Marine Physical Laboratory. The design of a TRM experiment is specific to the location and environment where it is being conducted.(More)
Acoustic synthetic apertures are usually generated by coherent summing of signals, correcting for phase shifts due to the lapse in time as a receiver array moves to create the aperture. This approach suffers from phase estimation errors arising from both positioning errors of the moving receivers and from phase instabilities in the signal. An incoherent(More)