A method including receiving an audio scene including at least one source captured using at least one near field microphone and at least one far field microphone. The method includes determining at least one room-impulse-response associated with the audio scene based on the at least one near field microphone and the at least one far field microphone, accessing a predetermined scene geometry corresponding to the audio scene, and identifying best match to the predetermined scene geometry in a scene geometry database. The method also includes performing RIR comparison based on the at least one RIR and at least one geometric RIR associated with the best matching geometry and rendering a volumetric audio scene based on a result of the RIR comparison.

A signal processing system and method for delivering spatialized sound by optimizing sound waveforms from a sparse array of speakers to the ears of a user. The system can provide listening areas within a room or space, to provide spatialization sounds to create a 3D audio effect. In a binaural mode, a binary speaker array provides targeted beams aimed towards a user's ears.

The present disclosure pertains to an apparatus comprising circuitry configured to: determine a loudspeaker dependent spread factor for at least one individual loudspeaker of a loudspeaker arrangement, wherein the loudspeaker dependent spread factor depends on a specification of the at least one individual loudspeaker; and 5 control the outputs of the loudspeakers of the loudspeaker arrangement based on the loudspeaker dependent spread factor for the at least one individual loudspeaker to generate at least one virtual sound source.

Provided is a sound image reproduction device, sound image reproduction method, and sound image reproduction program that can support monaural sound sources and is capable of imparting directivity to virtual sound sources in a space. An acoustic signal processing device (sound image reproduction device) 1 that generates virtual sound sources in a space using multiple loudspeakers arranged in a straight line, includes: a focal-point position determination unit 12 that determines the position of each virtual sound source to generate multiple virtual sound sources in a circular arrangement; a filter-coefficient determination unit 13 that calculates an impulse response vector for each loudspeaker by performing an inverse Fourier transform on a driving function for each loudspeaker that is used to generate a virtual sound source at the position of each virtual sound source and in which different weights are given to some of the virtual sound sources; and a convolution calculation unit 14 that calculates the convolution of one inputted acoustic signal with the impulse response vector for each loudspeaker and outputs each acoustic signal to the corresponding the multiple loudspeakers.

An audio processing apparatus comprises a receiver (705) which receives audio data including audio components and render configuration data including audio transducer position data for a set of audio transducers (703). A renderer (707) generating audio transducer signals for the set of audio transducers from the audio data. The renderer (7010) is capable of rendering audio components in accordance with a plurality of rendering modes. A render controller (709) selects the rendering modes for the renderer (707) from the plurality of rendering modes based on the audio transducer position data. The renderer (707) can employ different rendering modes for different subsets of the set of audio transducers the render controller (709) can independently select rendering modes for each of the different subsets of the set of audio transducers (703). The render controller (709) can select the rendering mode for a first audio transducer of the set of audio transducers (703) in response to a position of the first audio transducer relative to a predetermined position for the audio transducer. The approach may provide improved adaptation, e.g. to scenarios where most speakers are at desired positions whereas a subset deviate from the desired position(s).

Provided is an information processing apparatus including: a speaker array that includes a plurality of speakers, and performs wavefront synthesis by using an output of the plurality of speakers; and a presentation unit that presents visual information indicating a state of waves on a wavefront formed in the wavefront synthesis, or presents visual information based on positional information of a virtual sound image that has been formed in a position that is different from a vicinity of the speaker array in the wavefront synthesis.

Provided is a sound field forming apparatus and method to improve reproducibility of a wave front by using a smaller amount of computation. The sound field forming apparatus includes a listener position acquisition section that acquires listener positional information indicating a position of a listener, a drive speaker selection section that selects one or a plurality of speakers, as a drive speaker, used to form a sound field, among the speakers configuring a speaker array on the basis of the listener positional information, and a drive signal generation section that drives the drive speaker and generates a speaker drive signal for forming the sound field in accordance with a selection result of the drive speaker.

Provided is an information processing device that processes a dialogue of an audio agent. The information processing device includes an acquisition unit that acquires audio information of an agent device that is played back through interaction with a user and audio information of other contents different from the audio information of the agent device, and a controller that performs sound field control processing on an audio output signal based on the audio information of the agent device acquired by the acquisition unit. The controller performs wavefront composition of pieces of audio output from a plurality of speakers, controls a sound field of the agent device, and avoids mixing with the other contents different from the audio information of the agent device.

The present technology relates to a signal processing apparatus, a signal processing method, and a program that make it possible to reduce an amount of computation for wavefront synthesis.

The signal processing apparatus includes a reproduction speaker selection section. According to a position of a virtual sound source and a range of a listening area, the reproduction speaker selection section selects, from a plurality of speakers included in a speaker array, a plurality of reproduction speakers to be used for reproducing a sound based on an audio signal of the virtual sound source. The present technology can apply to the signal processing apparatus.

A signal processing system and method for delivering spatialized sound, comprising: a spatial mapping sensor, configured to map an environment, to determine at least a position of at least one listener and at least one object; a signal processor configured to: transform a received audio program according to a spatialization model comprising parameters defining a head-related transfer function, and an acoustic interaction of the object, to form spatialized audio; generate an array of audio transducer signals for an audio transducer array representing the spatialized audio; and a network port configured to communicate physical state information for the at least one listener through digital packet communication network.