Abstract: A method comprising determining at least one audio event based on an audio waveform and determining a deepfake probability for the audio event.

Abstract: 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.

Abstract: Provided is a signal processing device including: a reverberation sound signal generation unit that generates a reverberation sound signal according to a sound source position of a virtual sound source and a distance to a reference point; and a drive signal generation unit that generates a drive signal for a speaker array by a wavefront synthesis filter, in which the drive signal generation unit generates the drive signal on the basis of a signal obtained by performing wavefront synthesis filtering processing on a signal obtained by convolving the reverberation sound signal with a signal of the virtual sound source and/or a signal obtained by performing wavefront synthesis filtering processing on the reverberation sound signal to make the reverberation sound signal into a virtual sound source.

Abstract: Provided is a signal processing apparatus having: a sound source separation unit configured to perform sound source separation on a mixed sound signal obtained by mixing a plurality of sound source signals; a sound source type determination unit configured to determine a type of a predetermined sound source signal obtained by the sound source separation; and an output destination control unit configured to output the predetermined sound source signal to a corresponding output device on the basis of a determination result of the sound source type determination unit.

Abstract: The present technology relates to a signal processing apparatus and method, and a program that can easily make a leaking sound difficult to hear. A signal processing apparatus includes a masking sound generation unit that, in a case where a first content is reproduced in a first region and a second content is reproduced in a second region by wave field synthesis using a speaker array, generates a masking sound for masking a sound of the first content and a sound of the second content heard in a region between the first region and the second region. The present technology can be applied to content reproduction systems.

Abstract: The present technology relates to an information processing apparatus and method, and a program, which are capable of conducting a search more easily and at a higher speed. the information processing apparatus includes a control unit configured to designate a designated section and a designated sound source of an audio signal including sounds of a plurality of sound sources, and configured to obtain a search result of a sound source signal similar to a signal of the designated sound source, the sound source signal having been searched for on the basis of the signal of the designated sound source in the designated section of the audio signal. The present technology is applicable to the information processing apparatus.

Abstract: The present technology relates to an information processing device, an information processing method, and a program that enable easier visualization of a sound field. The information processing device includes: a calculation unit configured to calculate, on the basis of positional information indicating a plurality of observation positions in a space and an audio signal of sound observed at each of the plurality of observation positions, an amplitude or phase of the sound at each of a plurality of positions in the space at a first time interval; an event detection unit configured to detect an event; and an adjustment unit configured to perform, in a case where the event is detected, control such that the amplitude or the phase is calculated at a second time interval shorter than the first time interval. The present technology can be applied to a sound-field visualization system.

Abstract: The present technology relates to a signal processing device, a signal processing method, and a program that enable more efficient sound reproduction. A signal processing device includes an order determination unit that determines an order for limiting an operation amount of an operation related to a rotation matrix corresponding to head rotation of a listener, a rotation operation unit that rotates a head-related transfer function of a spherical harmonic domain by the operation in which the rotation matrix is limited by the order, and a synthesis unit that generates a headphone drive signal by synthesizing the head-related transfer function after rotation obtained by the operation with a sound signal in the spherical harmonic domain. The present technology can be applied to an audio processing device.

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 that make it possible to reproduce sound more effectively. A signal processing device includes a rotation operation unit that rotates a head-related transfer function in a spherical harmonic domain by an operation on the basis of a rotation matrix corresponding to rotation of a head of a listener, the operation in which an order of the rotation matrix is limited, and a synthesis unit that synthesizes the head-related transfer function after rotation obtained by the operation and a sound signal of the spherical harmonic domain to generate a headphone drive signal. The present technology is applicable to an audio processor.

Abstract: 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.

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 an HRTF measurement method, an HRTF measurement device, and a program which can more simply acquire a head-related transfer function of an individual. The HRTF measurement device displays an image indicating a target direction that a user is to face. In a case where a front direction of the user and the target direction are matched, the HRTF measurement device outputs a measurement sound from a speaker and measures an HRTF on the basis of a result of receiving the measurement sound through a microphone mounted on an ear of the user. The present technology can be applied to, for example, a device which measures a head-related transfer function and the like.

Abstract: 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.

Abstract: An information processing apparatus, an information processing system, an information processing method, and a program according to the present disclosure each include a sound-source position determining section (131) and an output control section (133). The sound-source position determining section (131) determines a position of a virtual sound source that is generated by a speaker array (20) and produces a spherical wave. The output control section (133) controls an output from the speaker array (20) to cause the virtual sound source to be located at the position. The virtual sound source outputs voice information corresponding to visual information that is information shown on a display (30).

Abstract: 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.

Abstract: The present technology relates to a signal processing apparatus and method, and a program that can easily make a leaking sound difficult to hear. A signal processing apparatus includes a masking sound generation unit that, in a case where a first content is reproduced in a first region and a second content is reproduced in a second region by wave field synthesis using a speaker array, generates a masking sound for masking a sound of the first content and a sound of the second content heard in a region between the first region and the second region. The present technology can be applied to content reproduction systems.

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: An information processing device including an acquisition unit that acquires a sound collection result of a sound from each of one or more sound sources obtained by a sound collection portion of which positional information indicating at least one of a position and a direction is changed and an estimation unit that estimates a direction of each of the one or more sound sources on a basis of a change in a frequency of a sound collected by the sound collection portion in association with a change in the positional information of the sound collection portion.