Abstract: The present invention is directed to reducing influence of crosstalk components by appropriately blocking a propagation path of the crosstalk components output from speakers that reproduce signals for right and left ears respectively. Provided is a contact member used in contact with a back and/or a back of a head of a listener. The contact member is installed with: a first speaker that reproduces a signal for the left ear and a second speaker that reproduces a signal for the right ear; and a propagation obstruction adapted to block a propagation path of crosstalk components output from the respective speakers.

Abstract: The present technology relates to a coding device, a coding method, a decoding device, a decoding method, and a program capable of improving coding efficiency. The coding device includes a time-frequency transform section that performs time-frequency transform using a transform window on an audio signal, and a coding section that performs Huffman coding on frequency spectrum information obtained by the time-frequency transform in a case in which a transform window length of the transform window is changed over from a small transform window length to a large transform window length, and that performs arithmetic coding on the frequency spectrum information in a case in which the transform window length of the transform window is not changed over from the small transform window length to the large transform window length. The present technology is applicable to a coding device and a decoding device.

Abstract: The present technology relates to a signal processing device, method, and program that can improve encoding efficiency. A signal processing device includes: an acquisition unit that acquires reverb information including at least one of space reverb information specific to a space around an audio object or object reverb information specific to the audio object and an audio object signal of the audio object; and a reverb processing unit that generates a signal of a reverb component of the audio object on the basis of the reverb information and the audio object signal. The present technology can be applied to a signal processing device.

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 signal processing apparatus and method, and a program that can easily determine a localization position of a sound image. A signal processing apparatus includes: an acquisition unit configured to acquire information associated with a localization position of a sound image of an audio object in a listening space specified in a state where the listening space viewed from a listening position is displayed; and a generation unit configured to generate a bit stream on the basis of the information associated with the localization position. The present technology can be applied to the signal processing apparatus.

Abstract: The present technology relates to a signal processing device and method, and a program for improving reproducibility of a sound image with a small amount of calculation. A signal processing device includes a rendering method selection unit configured to select one or more methods of rendering processing of localizing a sound image of an audio signal in a listening space from among a plurality of methods, and a rendering processing unit configured to perform the rendering processing for the audio signal by the method selected by the rendering method selection unit. The present technology can be applied to a signal processing device.

Abstract: The present technology relates to an information processing apparatus, a method, and a program that can create a great sense of realism with a small number of computations. An information processing apparatus includes a gain determination section that determines an attenuation level on the basis of a positional relationship between a given object and another object and determines a gain of a signal of the given object on the basis of the attenuation level. The present technology is applicable to a signal processing apparatus.

Abstract: A method, system, and computer program product for processing an encoded audio signal is described. In one exemplary embodiment, the system receives an encoded low-frequency range signal and encoded energy information used to frequency shift the encoded low-frequency range signal. The low-frequency range signal is decoded and an energy depression of the decoded signal is smoothed. The smoothed low-frequency range signal is frequency shifted to generate a high-frequency range signal. The low-frequency range signal and high-frequency range signal are then combined and outputted.

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 information processing apparatus and an information processing method that enable construction of preference information of many users without special communication. In an information processing apparatus for managing content to be delivered to a plurality of other information processing apparatuses via a network, content information of content delivered in response to a request to a plurality of the other information processing apparatuses is acquired by an acquisition unit, and interest information of a plurality of the other information processing apparatuses is constructed by a construction unit on the basis of the acquired content information. The present technology is applicable to, in one example, a delivery system that delivers content from a server to terminal device via a network.

Abstract: The present technology relates to a signal processing apparatus and method, and a program that are capable of reproducing sound at an optional listening position with a high sense of reality. The signal processing apparatus includes a rendering unit that generates reproduction data of sound at an optional listening position in a target space on the basis of recording signals of microphones attached to a plurality of moving bodies in the target space. The present technology can be applied to a reproduction apparatus.

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: To enable, on a receiving side, processing obtaining predetermined information to be performed easily and appropriately in a case the predetermined information is divided into a predetermined number of audio frames and transmitted. The predetermined information is inserted into an audio compressed data stream. The audio compressed data stream into which the predetermined information is inserted is transmitted. It is possible to insert each of the pieces of divided information obtained by dividing the predetermined information into the predetermined number of audio frames of the audio compressed data stream. Information indicating the overall size of the predetermined information is added to a first piece of divided information. It is possible to ensure space for storing the predetermined information in a storage medium on the basis of the information indicating the overall size of the predetermined information at a time point where the first piece of divided information is obtained.

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 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 encoding device and method, a decoding device and method, and a program, which are adapted to be capable of improving convenience. The decoding device is provided with: a decoding unit that decodes audio data including an object audio, the audio data being included in an encoded bit stream, and reads metadata of the object audio from an area in which arbitrary data of the encoded bit stream can be stored; and an output unit that outputs the decoded audio data on the basis of the metadata. The present technology can be applied to the decoding device.

Abstract: The present technology relates to a decoding apparatus, a decoding method and a program which make it possible to obtain sound with higher quality. A demultiplexing circuit demultiplexes an input code string into a gain code string and a signal code string. A signal decoding circuit decodes the signal code string to output a time series signal. A gain decoding circuit decodes the gain code string. That is, the gain decoding circuit reads out gain values and gain inclination values at predetermined gain sample positions of the time series signal and interpolation mode information. An interpolation processing unit obtains a gain value at each sample position between two gain sample positions through linear interpolation or non-linear interpolation according to the interpolation mode based on the gain values and the gain inclination values. A gain applying circuit adjusts a gain of the time series signal based on the gain values. The present technology can be applied to a decoding apparatus.

Abstract: The present disclosure relates to a compression/encoding apparatus and method, a decoding apparatus and method, and a program that allow for provision of a lossless compression technology with higher compression ratio. A GOB data configuration section configures GOB data with a group of digital data that includes a plurality of blocks by treating a frame of delta-sigma-modulated digital data as a block. A table generation section generates a conversion table for encoding the GOB data. An encoding section compresses and encodes the digital data of each block included in the GOB data by using the conversion table. The present technology is applicable, for example, to audio signal compression and encoding, and so on.

Abstract: The present disclosure relates to an information processing device, an information processing method, and an information processing system capable of appropriately performing scaling of a distribution device which distributes an audio stream encoded by a lossless compression system. An original distribution server performs scaling of a premium server which distributes the audio stream to a premium client on the basis of bit rate information including an average value of a predetermined period of bit rates of the audio stream encoded by a lossless DSD system. The present disclosure is applicable to, for example, the original distribution server or the like.