Abstract:
A method is provided for positioning the individual elements of a microphone arrangement including at least two such elements. The spacing among the microphone elements supports the generation of numerous combinations of the signal of interest and a sum of interfering sources. Use of the microphone element placement method leads to the formation of many types of microphone arrangements, comprising at least two microphone elements, and provides the input data to signal processing system for sound discrimination. Many examples of these microphone arrangements are provided, some of which are integrated with everyday objects. Also, enhancements and extensions are provided for a signal separation-based processing system for sound discrimination, which uses the microphone arrangements as the sensory front end.
Abstract:
Magnetic forces are used as a controlled actuation mechanism to move and position objects of interest. In one embodiment, a first spherical surface has at least one magnetic positioner attached. A second spherical surface is positioned to move relative to the first spherical surface. A plurality of controlled electromagnets are spaced about the second spherical surface. Control logic energizes at least one of the controlled electromagnets to create magnetic interaction with at least one magnetic positioner to move the first spherical surface relative to the second spherical surface.
Abstract:
Speech in the presence of noise is detected by first extracting at least one extracted speech signal (28) from at least one received signal (24) and extracting at least one extracted noise signal (30) from the at least one received signal (24). A detected speech signal (34) is generated based on both at least one extracted speech signal (28) and on at least one extracted noise signal (30).
Abstract:
Directional sound acquisition is obtained by combining directional sensitivities in microphones with signal processing electronics to reduce the effects of noise received from unwanted directions. One or more microphones having directional sensitivity including a minor lobe pointing in the particular direction of interest and a major lobe pointing in a direction other than the particular direction are used. Signal processing circuitry reduces the effect of sound received from directions of a microphone major lobe.
Abstract:
An integrated sensing device comprising an array of sensor processor cells capable of being arranged into a detection array. Each sensor processor cell comprises a sensing medium; at least one transconductance amplifier configured for feedforward template multiplication; at least one transconductance amplifier configured for feedback template weights; a plularity of local dynamic memory cells; a data bus for data transfer; and a local logic unit. The array of sensor processor cells, by responding to data control signals, is capable of transforming, reshaping, and modulating the original sensed image into varied represenations which include (and extend) traditional spatial and temporal processing transformations.