A wireless positioning system for detecting a positioning coordinate of a person comprises a wireless positioning device for sending a wireless broadcast signal comprising a device identity code and a motion vector; a plurality of wireless base stations for receiving the wireless broadcast signal and sending a positioning signal comprising a wireless broadcast signal and an RSSI; and a positioning server for receiving the positioning signal and calculating the positioning coordinates of the wireless positioning device according to the positioning signal. Wherein, when the received positioning signal is insufficient to calculate the positioning coordinates, the positioning coordinates are calculated based on the last positioning coordinate plus the motion vector. Compared with the prior art, the wireless positioning system of the present invention uses the RSSI to cooperate with the motion vector. The wireless positioning range is expanded with more accuracy.

A system (100) and method (190) for determining the reliability of an ultrasonic tracking device (102) includes a determination device (132) that is configured to receive signals from the ultrasonic tracking device and determine a quantity of sensors (105) of an interventional device (103) in a field of view of the ultrasonic imaging device. An evaluation device (136) correlates a quantity of the sensors in the field of view with a reliability level for the determined orientation of the interventional device and generates a control signal (142) to a feedback device. The feedback device provides feedback to the user concerning the reliability level for the orientation of the interventional device determined by the ultrasonic tracking device. The feedback may be visual and/or audible feedback.

A system (100) and method (190) for determining the reliability of an ultrasonic tracking device (102) includes a determination device (132) that is configured to receive signals from the ultrasonic tracking device and determine a quantity of sensors (105) of an interventional device (103) in a field of view of the ultrasonic imaging device. An evaluation device (136) correlates a quantity of the sensors in the field of view with a reliability level for the determined orientation of the interventional device and generates a control signal (142) to a feedback device. The feedback device provides feedback to the user concerning the reliability level for the orientation of the interventional device determined by the ultrasonic tracking device. The feedback may be visual and/or audible feedback.

A method for determining an actual position of a microphone, comprising: sequentially emitting a first sound signal via a first speaker positioned and a second sound signal via a second speaker positioned; measuring a first elapsed time between the emission of the first sound signal and a detection of the first sound signal by the microphone, and a second elapsed time between the emission of the second sound signal and a detection of the second sound signal by the microphone; determining a first distance between the first speaker and the microphone using the first elapsed time, and a second distance between the second speaker and the microphone using the second elapsed time; determining the actual position of the microphone using the first and second distances and the positions of the first and second speaker; and outputting the actual position.

A voice activation system of a vehicle is provided herein. Microphones are disposed within a vehicle cabin and are configured to detect a voice command spoken by a vehicle occupant. A controller is configured to determine a location of the vehicle occupant based on a time in which the voice command is received by each microphone and generate a control signal for operating a feature specific to the determined location of the vehicle occupant and responsive to the voice command.

A voice activation system of a vehicle is provided herein. Microphones are disposed within a vehicle cabin and are configured to detect a voice command spoken by a vehicle occupant. A controller is configured to determine a location of the vehicle occupant based on a time in which the voice command is received by each microphone and generate a control signal for operating a feature specific to the determined location of the vehicle occupant and responsive to the voice command.

The present invention provides methods and systems for tracking motion in multiple dimensions, including multiple dimensions, including a transmitter probe fixture, a receiver array, and an electronic control unit.

Provided is an electronic device including a first microphone array including a plurality of microphones configured to generate first signals related to a first sound in response to the first sound from a sound source, and a processor configured to generate a first result related to a first direction to the sound source from a first reference position among first positions at which the first sound is received by the plurality of microphones based on second signals corresponding to a second sound received from the sound source at second positions separated from the first positions and the first signals, and generate a second result related to a distance to the sound source based on information on a second direction from a second reference position among the second positions to the sound source and the first result.

Provided is an electronic device including a first microphone array including a plurality of microphones configured to generate first signals related to a first sound in response to the first sound from a sound source, and a processor configured to generate a first result related to a first direction to the sound source from a first reference position among first positions at which the first sound is received by the plurality of microphones based on second signals corresponding to a second sound received from the sound source at second positions separated from the first positions and the first signals, and generate a second result related to a distance to the sound source based on information on a second direction from a second reference position among the second positions to the sound source and the first result.

The present technology relates to a signal processing device, a signal processing method, and a program that can provide sound with more increase in realistic sense by restoring a difference of sound pressure between sound sources. The signal processing device includes: an acoustic signal obtaining unit that obtains an acoustic signal; a sound source positional information obtaining unit that obtains sound source positional information relating to a distance between a sound source and a sound collecting unit that collects sound from the sound source; a listening positional information obtaining unit that obtains listening positional information relating to a distance between a reproducing device that reproduces the acoustic signal and a listener who listens to sound reproduced by the reproducing device; and a correcting unit that corrects gain of the acoustic signal on a basis of the sound-source positional information and the listening positional information. The present technology can be applied to, e.g., a TV telephone system.