Abstract: The present technology relates to an information processing apparatus and method, and a program that enable more efficient edit. The information processing apparatus includes a control unit that selects and groups a plurality of objects existing in a predetermined space, and changes the positions of the plurality of the objects while maintaining the relative positional relationship of the plurality of the grouped objects in the space. The present technology can be applied to information processing apparatuses.

Abstract: An input unit receives input of an assumed listening position of sound of an object, which is a sound source, and outputs assumed listening position information indicating the assumed listening position. A position information correction unit corrects position information of each object on the basis of the assumed listening position information to obtain corrected position information. A gain/frequency characteristic correction unit performs gain correction and frequency characteristic correction on a waveform signal of an object on the basis of the position information and the corrected position information. A spatial acoustic characteristic addition unit further adds a spatial acoustic characteristic to the waveform signal resulting from the gain correction and the frequency characteristic correction on the basis of the position information of the object and the assumed listening position information. The present technology is applicable to an audio processing device.

Abstract: The present technology relates to a signal processing device, a method, and a program capable of improving transmission efficiency and efficiency in the data processing amount. A signal processing device includes: an acquisition unit that acquires polar coordinate position information indicating a position of a first object expressed by polar coordinates, audio data of the first object, absolute coordinate position information indicating a position of a second object expressed by absolute coordinates, and audio data of the second object; a coordinate conversion unit that converts the absolute coordinate position information into polar coordinate position information indicating a position of the second object; and a rendering processing unit that performs rendering processing on the basis of the polar coordinate position information and the audio data of the first object and the polar coordinate position information and the audio data of the second object.

Abstract: The present technology relates to an encoding device and method, a decoding device and method, and a program that enable to improve an encoding efficiency in a state where a real-time operation is maintained. The encoding device includes a priority information generation unit that generates priority information indicating a priority of an audio signal, on the basis of at least one of the audio signal or metadata of the audio signal, a time-frequency transform unit that performs time-frequency transform on the audio signal and generates an MDCT coefficient, and a bit allocation unit that quantizes the MDCT coefficient of the audio signal, in descending order of the priority of the audio signal indicated by the priority information, for a plurality of the audio signals. The present technology may be applied to the encoding device.

Abstract: The present technology relates to a sound processing apparatus and a sound processing system for enabling more stable localization of a sound image. A virtual speaker is assumed to exist on the lower side among the sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect to the virtual speaker and the two speakers located at the upper right and the upper left, to calculate gains of the two speakers at the upper right and the upper left and the virtual speaker, the gains being to be used for fixing a sound image at the target sound image position. Further, two-dimensional VBAP is performed with respect to the lower right and lower left speakers, to calculate gains of the lower right and lower left speakers, the gains being to be used for fixing a sound image at the position of the virtual speaker.

Abstract: The present technology relates to a signal processing device, a signal processing method, and a program that enable implementation of more effective distance feeling control. The signal processing device includes a reverb processing unit that generates a signal of a reverb component on the basis of object audio data of an audio object and a reverb parameter for the audio object. The present technology can be applied to a signal processing device.

Abstract: An input unit receives input of an assumed listening position of sound of an object, which is a sound source, and outputs assumed listening position information indicating the assumed listening position. A position information correction unit corrects position information of each object on the basis of the assumed listening position information to obtain corrected position information. A gain/frequency characteristic correction unit performs gain correction and frequency characteristic correction on a waveform signal of an object on the basis of the position information and the corrected position information. A spatial acoustic characteristic addition unit further adds a spatial acoustic characteristic to the waveform signal resulting from the gain correction and the frequency characteristic correction on the basis of the position information of the object and the assumed listening position information. The present technology is applicable to an audio processing device.

Abstract: The present technology relates to an audio processing apparatus and method and a program that make it possible to obtain sound of higher quality. An acquisition unit acquires an audio signal and metadata of an object. A vector calculation unit calculates, based on a horizontal direction angle and a vertical direction angle included in the metadata of the object and indicative of an extent of a sound image, a spread vector indicative of a position in a region indicative of the extent of the sound image. A gain calculation unit calculates, based on the spread vector, a VBAP gain of the audio signal in regard to each speaker by VBAP. The present technology can be applied to an audio processing apparatus.

Abstract: The present technology relates to an audio processing apparatus and method and a program that make it possible to obtain sound of higher quality. An acquisition unit acquires an audio signal and metadata of an object. A vector calculation unit calculates, based on a horizontal direction angle and a vertical direction angle included in the metadata of the object and indicative of an extent of a sound image, a spread vector indicative of a position in a region indicative of the extent of the sound image. A gain calculation unit calculates, based on the spread vector, a VBAP gain of the audio signal in regard to each speaker by VBAP. The present technology can be applied to an audio processing apparatus.

Abstract: The present technology relates to an information processing apparatus, an information processing method, and a program for achieving reduction of a processing load on a distribution side along with reduction of a transfer volume of information. The information processing apparatus includes an acquisition unit that acquires low accuracy position information having first accuracy and indicating a position of an object within a space where a user is located and acquires additional information for obtaining position information that has second accuracy higher than the first accuracy, indicates the position of the object within the space, and corresponds to a position of the user and a position information calculation unit that obtains the position information on the basis of the low accuracy position information and the additional information. The present technology is applicable to an information processing apparatus.

Abstract: The present technology relates to a particular-sound detector and method, and a program that make it possible to improve the performance of detecting particular sounds. The particular-sound detector includes a particular-sound detecting section that detects a particular sound on a basis of a plurality of audio signals obtained by collecting sounds by a plurality of microphones provided to a wearable device. In addition, the plurality of the microphones includes two microphones that are equidistant at least from a sound source of the particular sound, and one microphone arranged at a predetermined position. The present technology can be applied to headphones.

Abstract: The present technology relates to a sound processing apparatus and a sound processing system for enabling more stable localization of a sound image. A virtual speaker is assumed to exist on the lower side among the sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect to the virtual speaker and the two speakers located at the upper right and the upper left, to calculate gains of the two speakers at the upper right and the upper left and the virtual speaker, the gains being to be used for fixing a sound image at the target sound image position. Further, two-dimensional VBAP is performed with respect to the lower right and lower left speakers, to calculate gains of the lower right and lower left speakers, the gains being to be used for fixing a sound image at the position of the virtual speaker.

Abstract: The present technology relates to a particular-sound detector and method, and a program that make it possible to improve the performance of detecting particular sounds. The particular-sound detector includes a particular-sound detecting section that detects a particular sound on a basis of a plurality of audio signals obtained by collecting sounds by a plurality of microphones provided to a wearable device. In addition, the plurality of the microphones includes two microphones that are equidistant at least from a sound source of the particular sound, and one microphone arranged at a predetermined position. The present technology can be applied to headphones.

Abstract: The present technology relates to a signal processing device and method, and a program making it possible to reduce the computational complexity of decoding at low cost. A signal processing device includes: a priority information generation unit configured to generate priority information about an audio object on the basis of a plurality of elements expressing a feature of the audio object. The present technology may be applied to an encoding device and a decoding device.

Abstract: The present technology relates to an encoding device, an encoding method, a reproduction device, a reproduction method, and a program enabling each reproduction equipment to reproduce an appropriate content in a simplified manner. A content data decoding unit decodes encoded metadata and outputs zoom area information, which is included in metadata acquired as a result thereof, designating an area to be zoomed. A zoom area selecting unit selects one or a plurality of pieces of zoom area information from among the zoom area information. A video segmenting unit segments a zoom area represented by the selected zoom area information in a video based on video data and outputs zoom video data acquired as a result thereof. An audio converting unit performs an audio converting process according to the selected zoom area information for audio data and outputs zoom audio data acquired as a result thereof. The present technology can be applied to a reproduction device.

Abstract: The present technology relates to an information processing device and method, a reproduction device and method, and a program that are capable of performing gain correction more easily. An information processing device includes a gain correction value decision unit that decides a correction value of a gain value for performing gain correction on an audio signal of an audio object in accordance with a direction of the audio object viewed from a listener. The present technology can be applied to a gain decision device and a reproduction device.

Abstract: The present technology relates to a sound processing apparatus and a sound processing system for enabling more stable localization of a sound image. A virtual speaker is assumed to exist on the lower side among the sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect to the virtual speaker and the two speakers located at the upper right and the upper left, to calculate gains of the two speakers at the upper right and the upper left and the virtual speaker, the gains being to be used for fixing a sound image at the target sound image position. Further, two-dimensional VBAP is performed with respect to the lower right and lower left speakers, to calculate gains of the lower right and lower left speakers, the gains being to be used for fixing a sound image at the position of the virtual speaker.

Abstract: An audio system includes: a face data detection unit that detects face data on the basis of input image data; an acoustic coefficient acquisition unit that outputs an acoustic coefficient associated with face data output from the face data detection unit; and an acoustic coefficient application unit that performs, on an audio signal, acoustic processing based on an acoustic coefficient acquired by the acoustic coefficient acquisition unit.

Abstract: The present technology relates to an information processing apparatus and method, and a program that enable more efficient edit. The information processing apparatus includes a control unit that selects and groups a plurality of objects existing in a predetermined space, and changes the positions of the plurality of the objects while maintaining the relative positional relationship of the plurality of the grouped objects in the space. The present technology can be applied to information processing apparatuses.

Abstract: The present technology relates to an encoding device, an encoding method, a reproduction device, a reproduction method, and a program enabling each reproduction equipment to reproduce an appropriate content in a simplified manner. A content data decoding unit decodes encoded metadata and outputs zoom area information, which is included in metadata acquired as a result thereof, designating an area to be zoomed. A zoom area selecting unit selects one or a plurality of pieces of zoom area information from among the zoom area information. A video segmenting unit segments a zoom area represented by the selected zoom area information in a video based on video data and outputs zoom video data acquired as a result thereof. An audio converting unit performs an audio converting process according to the selected zoom area information for audio data and outputs zoom audio data acquired as a result thereof. The present technology can be applied to a reproduction device.