Intel Corporation

Albert Shen

Mark R Leavy

Jeffrey N Kidder

An apparatus and method for determining directionality of acoustic signals arriving from an acoustic source is disclosed. A plurality of reflectors for modifying the acoustic signals and a transducer located proximate to the reflectors is used. A notch detector detects and identifies spectral notches in the modified acoustic signals. A device then determines the direction of the acoustic source. In one embodiment, a microphone system capable of detecting three-dimensional sound is provided. The microphone system comprises an elliptical-shaped microphone enhancer having at least two reflectors located different distances apart from a microphone located in the center of the ellipse. The reflectors have asymmetric ridges which cause interference patterns in the signals received by the microphone, conceptually analogous to the patterns generated by the pinnae of the human ear.

Spatial sound steering system

A method and apparatus for performing signal processing using incongruent buffers. According to one method described, a maximum concurrent run length (MCRL) is calculated to indicate the maximum run length before any of a plurality of buffers is exhausted. Processing data for each of the plurality of incongruent buffers is then repeated until the maximum concurrent run length has been reached. The calculation of the MCRL may be a determination of which of the plurality of buffers has a lowest remaining time before buffer exhaustion or the least number of remaining buffer entries. A system described includes a processor coupled to memory. The memory contains a plurality of buffer counters and a plurality of memory blocks defining a plurality of incongruent buffers. The memory also contains a MCRL calculation routine for determining the MCRL count from the buffer counters. A data processing routine repeats manipulations of data in the incongruent buffers until the MCRL count is reached.

Method and apparatus for manipulation of digital data in multiple

A method and apparatus for constructing a digital filter from a set of data is described. The method comprises the following steps. A plurality of magnitude components of the set of data is encoded. A plurality of phase components of the set of data is encoded. The plurality of encoded magnitude components and encoded phase components are stored in a memory. The digital filter is constructed using the encoded magnitude components and encoded phase components from the memory.

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Portland, OR, United States of America

Albert Shen