Technologies for a fabric acoustic sensor are disclosed. The fabric acoustic sensor includes a conductive thread and a non-conductive thread, which form a diaphragm that vibrates in response to a sound wave. As a result of the vibration, the conductive thread stretches, and a resistance of the conductive thread varies. The change in resistance is measured by a compute device, and the compute device may determine the sound wave based on the change in resistance. In some embodiments, the fabric acoustic sensor may be used to monitor a heart rate, locate an object, and/or provide an input for noise cancellation.

Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments, and/or combinations and sub-combinations thereof, for controlling functions of an audio responsive electronic device based on a presence detector (e.g., a motion sensor) to improve power usage and functional performance. In some embodiments, an audio responsive electronic device operates to intelligently turn on and turn off components in response to the detected presence of a user. In some embodiments, an audio responsive electronic device operates to suppress noise from the display device (or other sources of noise), and enhance audio commands from a user (or other sources of audio commands). In some embodiments, a media device is configured to adjust a transmission pattern to an audio responsive electronic device based on user position.

Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments, and/or combinations and sub-combinations thereof, for controlling functions of an audio responsive electronic device based on a presence detector (e.g., a motion sensor) to improve power usage and functional performance. In some embodiments, an audio responsive electronic device operates to intelligently turn on and turn off components in response to the detected presence of a user. In some embodiments, an audio responsive electronic device operates to suppress noise from the display device (or other sources of noise), and enhance audio commands from a user (or other sources of audio commands). In some embodiments, a media device is configured to adjust a transmission pattern to an audio responsive electronic device based on user position.

The present invention includes methods, circuits, devices, systems and associated computer executable code for acquiring, processing and rendering acoustic signals. According to some embodiments, one or more direction specific audio signals may be generated using a microphone array comprising two or more microphones and an audio stream generator. The audio stream generator may receive a direction parameter from an optical tracking system. There may be provided an audio rendering system adapted to normalize and/or balance acoustic signals acquired from a soundscape.

A speakerphone includes a processor, a memory device, a power management unit, a first microphone to receive audio waves, a second microphone to receive audio waves, and a third microphone to receive audio waves. The speakerphone may also include a digital signal processor (DSP) to detect a single-user mode activated at the speakerphone, process the audio waves received by the first microphone, second microphone, and third microphone to determine the wave phases of the audio waves received by the first microphone, second microphone, and third microphone, calculate a direction of a voice of a single user relative to the speakerphone; and process the voice of the single user and filter other voices detected by the first microphone, second microphone, and third microphone from the user's voice.

Tracking systems have been successfully applied to immersive simulation systems and virtual environment training in which portable devices (i.e., hand-held military equipment) within the immersive simulation system are tracked using time-of-fright recordings to triangulate each devices position. Until now, tracking systems have not used differential calculations to track these portable devices. The invention uses a single array of sensors mounted above the simulation area to communicate with small transmitters and emitters mounted on each portable device to generate position offsets for each portable device.

Tracking systems have been successfully applied to immersive simulation systems and virtual environment training in which portable devices (i.e., hand-held military equipment) within the immersive simulation system are tracked using time-of-fright recordings to triangulate each devices position. Until now, tracking systems have not used differential calculations to track these portable devices. The invention uses a single array of sensors mounted above the simulation area to communicate with small transmitters and emitters mounted on each portable device to generate position offsets for each portable device.

A field-programmable gate array (FPGA)-based real-time processing system applied to underwater acoustic positioning and realizing reconfigurability and multiple output is provided. The system includes a multi-interface control and command parsing module for automatically completing sample information transmission and command parsing; a finite-state machine (FSM) of sample management for calculating related data and completing splitting, flipping and writing of a sample; a parallel correlation processor group for completing, in parallel, high-performance processing operations regarding a plurality of targets; and a multiple output data former for simultaneously realizing data formation of a multiple output result and outputting a flag bit signal to the outside. A FPGA-based real-time processing control method is also provided that is applied to underwater acoustic positioning and realizing reconfigurability and multiple output. The system and the method are used, such that during a whole realization process, under multiple array elements and multiple targets, high-speed parallel correlation processing is realized, thereby solving problems in terms of real-time performance, universality and anti-noise performance, and effectively realizing high-performance correlation.

A field-programmable gate array (FPGA)-based real-time processing system applied to underwater acoustic positioning and realizing reconfigurability and multiple output is provided. The system includes a multi-interface control and command parsing module for automatically completing sample information transmission and command parsing; a finite-state machine (FSM) of sample management for calculating related data and completing splitting, flipping and writing of a sample; a parallel correlation processor group for completing, in parallel, high-performance processing operations regarding a plurality of targets; and a multiple output data former for simultaneously realizing data formation of a multiple output result and outputting a flag bit signal to the outside. A FPGA-based real-time processing control method is also provided that is applied to underwater acoustic positioning and realizing reconfigurability and multiple output. The system and the method are used, such that during a whole realization process, under multiple array elements and multiple targets, high-speed parallel correlation processing is realized, thereby solving problems in terms of real-time performance, universality and anti-noise performance, and effectively realizing high-performance correlation.

This wave source direction estimation apparatus is capable of highly accurately estimating the direction of a wave source even in an environment with a high surrounding noise level, and is provided with: a plurality of input signal acquisition means for acquiring signals generated at a wave source as input signals; a correlation function calculation means for calculating correlation functions on the basis of the input signals acquired by the input signal acquisition means; an envelope function extraction means for extracting envelope functions on the basis of the calculated correlation functions; a combined envelope function calculation means for calculating a combined envelope function by combining the extracted envelope functions; and an estimated direction information generation means for generating estimated direction information about the wave source on the basis of the calculated combined envelope function.