Systems, apparatuses, and methods are described for controlling source tracking and delaying beamforming in a microphone array system. A source tracker may continuously determine a direction of an audio source. A source tracker controller may pause the source tracking of the source tracker if a user may continue to speak to the system. The source tracker controller may resume the source tracking of the source tracker if the user may cease to speak to the system, or when one or more pause durations have been reached.

An electronic apparatus includes: a memory storing a first threshold value and a second threshold value corresponding to a receiving direction of a wake-up word, a sound receiver comprising sound receiving circuitry, and a processor configured to: identify a receiving direction of the sound based on a sound received through the sound receiver, based on a similarity between sound data obtained in response to the received sound and the wake-up word being greater than or equal to the first threshold value corresponding to the identified receiving direction, perform voice recognition for a subsequent sound received through the sound receiver, and based on the similarity being less than the first threshold value and greater than or equal to the second threshold value, change the first threshold value.

A system and method of ultrasonic acoustic source location is provided. The method comprises receiving an ultrasonic acoustic signals at an ultrasonic detector having a multiple arrays. Each array comprising multiple transducers. The acoustic signals are pre-processed to triangulate a location of a source. Sensor data of a mobile device is associated with the determined location; and identify a location of the source on a display of the mobile device. The ultrasonic leak detector provides improved accuracy and performance efficiencies over traditional solutions.

This application discloses a method and apparatus for determining characteristics of a sound source. The method may include: acquiring a first position of a first virtual role controlled by an application client in a virtual scene; detecting, in a sound source detection area associated with the first position, a second position of a sound source virtual object in the virtual scene; determining transparency of a position mark that matches the sound source virtual object, according to a sound source distance between the first position and the second position, the position mark identifying the second position of the sound source virtual object; and displaying, on an interaction interface of the application client, the position mark of the sound source virtual object according to the transparency.

The present application provides a method, device and system for determining a relative angle between intelligent devices, and intelligent devices. The method is applicable to a first intelligent device. The first intelligent device includes a first sound detection module and a second sound detection module. The relative angle between intelligent devices can be determined quickly, simply, conveniently and accurately.

There are provided a sound source visualization device and method. A sound source visualization device according to an embodiment includes: a sound source detection module configured to detect a sound source signal by using a plurality of sound source detection sensors; a preprocessing module configured to filter out the noise and amplify the sound source signal; a calculation module configured to calculate an approximate sound source location by analyzing the preprocessed sound source signal; a search module configured to generate a plurality of pseudo-planes by using the altitude information, to select planes, and to generate three-dimensional sound source location and altitude information by including information, obtained using the selected planes, in the approximate sound source location; and a visualization module configured to output sound source information to a preset system host or to convert this sound source information into a visualization signal and display the visualized signal.

This application discloses a method and apparatus for determining characteristics of a sound source. The method may include: acquiring a first position of a first virtual role controlled by an application client in a virtual scene; detecting, in a sound source detection area associated with the first position, a second position of a sound source virtual object in the virtual scene; determining transparency of a position mark that matches the sound source virtual object, according to a sound source distance between the first position and the second position, the position mark identifying the second position of the sound source virtual object; and displaying, on an interaction interface of the application client, the position mark of the sound source virtual object according to the transparency.

A method of determining a distance between a vehicle and a sound source includes detecting, at a microphone of the vehicle, sounds from a sound source external to the vehicle. The sounds have a first frequency component at a first frequency and a second frequency component at a second frequency. The method also includes determining, at a processor of the vehicle, a classification of the sound source based on audio properties of the sounds. The method further includes determining a first energy level associated with the first frequency component and a second energy level associated with the second frequency component. The method also includes determining a ratio between the first energy level and the second energy level. The method further includes determining the distance between the vehicle and the sound source based on the ratio and the classification of the sound source.

A wave source direction estimation device includes a signal extraction unit that sequentially extracts, one at a time, signals of signal segments according to a set time length from at least two input signals based on a wave detected at different detection positions, a function generation unit that generates a function associating at least two signals extracted by the signal extraction unit, a sharpness calculation unit that calculates sharpness of a peak of the function generated by the function generation unit, and a time length calculation unit that calculates the time length based on the sharpness and set the calculated time length.

A blind spot information acquisition device includes: a processor configured to: acquire sounds in an area around a vehicle, infer positions of occurrence of the sounds that have been acquired, acquire information relating to objects in the area around the vehicle, and determine that there is a sound occurring in a blind spot in a case in which a sound source in the positions of occurrence of the sounds cannot be identified from the information relating to objects in the area around the vehicle that has been acquired.