Abstract: Provided is an information processing apparatus having an audio signal generation unit which generates an audio signal reproduced from a loudspeaker on the basis of position information of each of a plurality of unmanned aerial vehicles, each of the unmanned aerial vehicles having the loudspeaker.

Abstract: 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.

Abstract: A sound processing device is provided with a correction unit that corrects a sound pickup signal. The sound pickup signal is obtained by picking up a sound with a microphone array. The correction unit corrects the sound pickup signal based on directional information that indicates a direction of the microphone array in spherical coordinates, during the picking up of the sound.

Abstract: The present technology relates to signal processing device and method, and a program for enabling spatial noise cancelling with a saved space and a small computation amount. The signal processing device includes a control section that, on the basis of a first microphone signal obtained by sound collection at a first microphone array, a speaker drive signal of an output sound for cancelling a sound which is propagated from an outside of a predetermined region to the predetermined region and is collected by the first microphone array, and that outputs the output sound from a speaker array on the basis of the speaker drive signal. The first microphone array includes a plurality of microphones. The speaker array includes at least one high-order speaker. The present technology is applicable to a signal processing device.

Abstract: The present technology relates to a speaker array designed to be capable of achieving sufficiently high reproducibility at low cost, and a signal processing apparatus. The speaker array is formed with a plurality of higher order speakers and a plurality of general speakers. The type, the number, or the installation positions of the higher order speakers are determined in accordance with wavefront reproducibility in a second region located on the outer side of a first region that can be controlled by the general speakers. The present technology can be applied to a speaker array and a sound field forming apparatus.

Abstract: The present technology relates to a speaker array designed to be capable of achieving sufficiently high reproducibility at low cost, and a signal processing apparatus. The speaker array is formed with a plurality of higher order speakers and a plurality of general speakers. The type, the number, or the installation positions of the higher order speakers are determined in accordance with wavefront reproducibility in a second region located on the outer side of a first region that can be controlled by the general speakers. The present technology can be applied to a speaker array and a sound field forming apparatus.

Abstract: The present technology relates to a speaker array designed to be capable of achieving sufficiently high reproducibility at low cost, and a signal processing apparatus. The speaker array is formed with a plurality of higher order speakers and a plurality of general speakers. The type, the number, or the installation positions of the higher order speakers are determined in accordance with wavefront reproducibility in a second region located on the outer side of a first region that can be controlled by the general speakers. The present technology can be applied to a speaker array and a sound field forming apparatus.

Abstract: Provided are a sound field forming apparatus and a method that enhances the reproducibility of a wavefront at a listener position. The sound field forming apparatus has a position acquisition unit to acquire position information indicative of a position of a listener or a position of a sound source to be formed, a control point specification unit to specify a control point with a distance from a speaker array of the listener or the sound source on the basis of the position information, and a filter unit to generate a speaker drive signal for forming a predetermined sound field by the speaker array by convoluting a filter coefficient corresponding to the specified control point with a sound source signal.

Abstract: The present technology relates to a signal processing device, a signal processing method, and a program that enable different sounds to be reproduced in a remote location and a neighboring location. A signal processing device includes: a remote filter unit configured to generate a remote sound reproduction signal for reproducing a sound in a remote audible region, by performing filter processing on a first sound source signal using a remote sound reproduction filter coefficient; and a neighboring filter unit configured to generate a neighboring sound reproduction signal for reproducing a sound in a neighboring audible region that is different from the remote audible region, by performing filter processing on a second sound source signal using a neighboring sound reproduction filter coefficient. The present technology can be applied to a remote-neighborhood separate sound field formation device.

Abstract: The present technology relates to a signal processing device, a signal processing method, and a program that enable different sounds to be reproduced in a remote location and a neighboring location. A signal processing device includes: a remote filter unit configured to generate a remote sound reproduction signal for reproducing a sound in a remote audible region, by performing filter processing on a first sound source signal using a remote sound reproduction filter coefficient; and a neighboring filter unit configured to generate a neighboring sound reproduction signal for reproducing a sound in a neighboring audible region that is different from the remote audible region, by performing filter processing on a second sound source signal using a neighboring sound reproduction filter coefficient. The present technology can be applied to a remote-neighborhood separate sound field formation device.

Abstract: A sound processing device is provided with a correction unit that corrects a sound pickup signal. The sound pickup signal is obtained by picking up a sound with a microphone array. The correction unit corrects the sound pickup signal based on directional information that indicates a direction of the microphone array in spherical coordinates, during the picking up of the sound.

Abstract: There is provided a local sound field forming apparatus including a local sound field forming filter coefficient recording unit that records an audio filter coefficient for forming a sound field by an evanescent wave, a filter unit that convolves the audio filter coefficient and a sound source signal to generate a loudspeaker drive signal, and a loudspeaker array that includes a plurality of loudspeakers including a directional loudspeaker, and that reproduces a sound on the basis of the loudspeaker drive signal. The present technology can be applied to a local sound field forming apparatus.

Abstract: A sound processing device is provided with a correction unit that corrects a sound pickup signal. The sound pickup signal is obtained by picking up a sound with a microphone array. The correction unit corrects the sound pickup signal based on directional information that indicates a direction of the microphone array in spherical coordinates, during the picking up of the sound.

Abstract: The present technique relates to sound processing apparatus and method, and a program that can more efficiently reproduce sound; A sound processing apparatus includes: a head direction acquisition unit that acquires a head direction of a user listening to sound; a rotation matrix generation unit that selects two first rotation matrices on the basis of the head direction from a plurality of first rotation matrices for rotation in a first direction held in advance, selects one second rotation matrix on the basis of the head direction from a plurality of second rotation matrices for rotation in a second direction held in advance, and generates a third rotation matrix on the basis of the selected two first rotation matrices and the selected one second rotation matrix; and a head-related transfer function composition unit that composes an input signal in a spherical harmonic domain, a head-related transfer function in the spherical harmonic domain, and the third rotation matrix to generate a headphone drive signal

Abstract: The present technology relates to a signal processing device and method, and a program that are capable of improving noise canceling performance. A signal processing device includes: a noise detection unit that detects control area internal noise generated in a control area formed by a microphone array; and a control unit that controls update of a filter coefficient of an adaptive filter, used to generate a signal of an output sound output by a speaker array, on the basis of a detection result of the control area internal noise in order to reduce external noise to a noise canceling area formed by the speaker array. The present technology can be applied to a spatial noise control device.

Abstract: Provided is an audio processing device and method, in which sound can be more efficiently reproduced. An audio processing device includes a matrix generation unit which generates a vector for each time-frequency with a head-related transfer function obtained by spherical harmonic transform by spherical harmonics as an element by using only the element corresponding to a degree of the spherical harmonics determined for the time-frequency or on the basis of the element common to all users and the element dependent on an individual user, and a head-related transfer function synthesis unit which generates a headphone drive signal of a time-frequency domain by synthesizing an input signal of a spherical harmonic domain and the generated vector.

Abstract: The present technology relates to a locally silenced sound field forming apparatus and method capable of controlling a silenced area in a depth direction. The locally silenced sound field forming apparatus includes a first speaker array that outputs a sound on the basis of a first speaker drive signal to form a predetermined sound field, and a second speaker array arranged at a position different from the position of the first speaker array and that outputs a sound on the basis of a second speaker drive signal to form a sound field that cancels the predetermined sound field. The present technology can be applied to a locally silenced sound field forming apparatus.

Abstract: The present technique relates to an acoustic tube and an acoustic reproduction apparatus that can generate an evanescent wave at a lower cost. An acoustic tube includes an acoustic path longer than an external dimension of the acoustic tube and includes a plurality of opening portions or a slit-like opening portion. When a sound wave advances in the acoustic tube, sound waves are output from the plurality of opening portions or from a plurality of positions of the slit-like opening portion, and the sound waves are combined to form an evanescent wave. The present technique can be applied to an acoustic tube, an acoustic reproduction apparatus including the acoustic tube, and the like.

Abstract: The present technology relates to a sound processing apparatus, a method, and a program that can reproduce an acoustic field more appropriately. A sound source position correction unit corrects sound source position information indicating a position of each object sound source, on the basis of a hearing position of a sound, and derives corrected sound source position information. A reproduction area control unit calculates, on a basis of an object sound source signal of a sound of an object sound source, the hearing position, and corrected sound source position information obtained by the correction, a spatial frequency spectrum such that a reproduction area is adjusted in accordance with the hearing position provided inside a spherical or annular speaker array. The present technology can be applied to a sound processing apparatus.

Abstract: The present technology relates to a sound field forming apparatus and method, and a program, enabled to improve reproducibility of a wave front by using a smaller amount of computation. A sound field forming apparatus includes a listener position acquisition section configured to acquire listener positional information indicating a position of a listener, a drive speaker selection section configured to select 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 configured to drive the drive speaker and generate a speaker drive signal for forming the sound field in accordance with a selection result of the drive speaker. The present technology can be applied to the sound field forming apparatus.