Abstract:
Provided is an information processing system including a recognizing unit configured to recognize a first target and a second target on the basis of signals detected by a plurality of sensors arranged around a specific user, an identifying unit configured to identify the first target and the second target recognized by the recognizing unit, an estimating unit configured to estimate a position of the specific user in accordance with the a signal detected by any one of the plurality of sensors, and a signal processing unit configured to process each of signals acquired from sensors around the first target and the second target identified by the identifying unit in a manner that, when being output from a plurality of actuators arranged around the specific user, the signals are localized near the position of the specific user estimated by the estimating unit.
Abstract:
A higher-order acoustical pressure measurement device (e.g., microphone) is disclosed. The device includes a first acoustic pressure measurement from a generally concentrated spatial location and a second acoustic pressure measurement having a spatiality greater than the concentrated spatial location of the first acoustic pressure measurement and at least one destructive interference signal. The destructive interference signal is characterized at least in part by the spatiality of the second acoustic pressure measurement. A higher-order microphone includes sensor elements configured to provide a destructive interference signal such that interference at one sensor element is configured to lower the destructive interference signal for the primary direction of directivity from a source signal.
Abstract:
Embodiments include a microphone assembly comprising an array microphone and a housing configured to support the array microphone and sized and shaped to be mountable in a drop ceiling in place of at least one of a plurality of ceiling tiles included in the drop ceiling. A front face of the housing includes a sound-permeable screen having a size and shape that is substantially similar to the at least one of the plurality of ceiling tiles. Embodiments also include an array microphone system comprising a plurality of microphones arranged, on a substrate, in a number of concentric, nested rings of varying sizes around a central point of the substrate. Each ring comprises a subset of the plurality of microphones positioned at predetermined intervals along a circumference of the ring.
Abstract:
A method and system for a noise cancellation comprises an amplifier in communication with the three or more speakers disposed in an area. A system controller produces a driver signal for each of the speakers in response to a signal from at least one microphone detecting sound in the area and communicates the driver signals to the amplifier. The amplifier drives each speaker with the driver signal produced for that speaker. In response to the driver signals, the speakers emit sound that combined produces a substantially uniform sound pressure field for a particular zone within the area. The substantially uniform sound pressure field produced by the speakers has a magnitude and phase adapted to attenuate a noise field in the area corresponding to the sound detected by the at least one microphone.
Abstract:
In an augmented reality environment, a speaker array is centrally located within an area to generate sound for the environment. The speaker array has a spherical or hemispherical body and speakers mounted about the body to emit sound in multiple directions. A controller is provided to select sets of speakers to form beams of sound in determined directions. The shaped beams are output to deliver a full audio experience in the environment from the fixed location speaker array.
Abstract:
A sound signal processing method and apparatus are provided that relate to the audio signal processing field. The method in the present invention includes acquiring, by a mobile terminal, sound signals from a three-dimensional sound field, where at least three microphones are disposed on the mobile terminal and one microphone is configured to receive a sound signal in at least one direction; acquiring, according to the acquired sound signals, a direction of a sound source relative to the mobile terminal; and obtaining spatial audio signals according to the direction of the sound source relative to the mobile terminal and the acquired sound signals, where the spatial audio signals are used for simulating the three-dimensional sound field. The present invention is applicable to a process of collecting and processing signals in a three-dimensional sound field surrounding a terminal.
Abstract:
Provided is a loudspeaker system capable of easily determining control parameters for controlling the directional characteristics of a speaker set including two or more speaker units. The loudspeaker system is configured to include: a speaker set 11 including two or more speaker units 2; a camera 15 adapted to photograph an acoustic space of the speaker set 11; a monitor 22 adapted to display a camera image 30 photographed by the camera 15; and a directional control parameter generating part 24 adapted to generate directional control parameters providing the directional characteristics of the speaker set 11. The directional control parameter generating parts 24 includes: a target position designation part 101 adapted to, on the basis of user operations, designate target positions 32 on the camera image 30; a directional control angle calculation part 103 adapted to, on the basis of the target positions 32, obtain directional control angles θ with respect to a front direction of the speaker set 11; and a directional control parameter determination part 104 adapted to, on the basis of the directional control angles θ, determine the directional control parameters.
Abstract:
A system and method for the directional transmission of sound is disclosed. In one embodiment, the system comprises an audio source configured to generate an audio signal, a control module configured to receive the audio signal and generate a driving signal, based at least in part on the audio signal, and an array comprising a plurality of loudspeakers, wherein the loudspeakers are linearly arranged such that the spacing between two adjacent loudspeakers increases along the array. In a particularly, embodiment, the spacing increases exponentially, and broadband dipole loudspeakers are used.
Abstract:
Positive and negative two terminals of each of a plurality of main speakers constituting an array speaker are connected to each of amplifiers. Then, the main speakers are bridge-driven. Sub-speakers interpolating the main speakers are arranged respectively between the main speakers. Then, the positive and negative terminals of each of the sub-speakers are connected respectively to the terminals of the same polarities of the adjacent two of the main speakers. One sub-speaker receives an average value of the signals provided to the adjacent two main speakers, so that the one sub-speaker interpolates the wavefronts emitted from the adjacent two main speakers.
Abstract:
Provided is an information processing system including a recognizing unit configured to recognize a first target and a second target on the basis of signals detected by a plurality of sensors arranged around a specific user, an identifying unit configured to identify the first target and the second target recognized by the recognizing unit, an estimating unit configured to estimate a position of the specific user in accordance with the a signal detected by any one of the plurality of sensors, and a signal processing unit configured to process each of signals acquired from sensors around the first target and the second target identified by the identifying unit in a manner that, when being output from a plurality of actuators arranged around the specific user, the signals are localized near the position of the specific user estimated by the estimating unit.