Abstract: An acoustic device includes: an imaging device configured to take a sample image of a space as a sound field and create an image data on the space based on the taken sample image; a sound collector configured to collect a sound generated in the space or to collect a previously-collected acoustic data therein; and a computation part configured to previously compute a plurality of parameters relevant to a coefficient of spatial acoustic filter corresponding to the sample image of the space and previously learn a sound field model of the space shown in the sample image. The computation part is configured to construct a sound field model of the sample image taken by the imaging device or of a previously-taken sample image, from the acoustic data collected by the sound collector, using the coefficient of spatial acoustic filter.

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: An acoustic device includes: an imaging device configured to take a sample image of a space as a sound field and create an image data on the space based on the taken sample image; a sound collector configured to collect a sound generated in the space or to collect a previously-collected acoustic data therein; and a computation part configured to previously compute a plurality of parameters relevant to a coefficient of spatial acoustic filter corresponding to the sample image of the space and previously learn a sound field model of the space shown in the sample image. The computation part is configured to construct a sound field model of the sample image taken by the imaging device or of a previously-taken sample image, from the acoustic data collected by the sound collector, using the coefficient of spatial acoustic filter.

Abstract: According to the present disclosure, a sound output device includes: a sound acquisition part configured to acquire sound to be output to the other end of a sound guide part, one end of which is arranged near an entrance of an ear canal of a listener, the sound guide part having a hollow structure; and a head-related transfer function adjustment part configured to adjust a head-related transfer function of sound captured by the sound guide part. Since the head-related transfer function adjustment part adjusts the head-related transfer function of sound captured by the sound guide part, it is possible to listen to both ambient sound and sound provided from a sound output device such that the listener does not feel strangeness even in the state in which the listener is wearing the sound output device.

Abstract: To provide a sound pickup device which is worn on an ear of a user and used. A sound pickup device includes: a sound pickup part; and a holding part that includes a sound transmission part and is configured to hold the sound pickup part in an ear canal of a user. The holding part includes a ring body having an opening portion that serves as the sound transmission part, and one or more arms each of which has one end coupled to the ring body and another end supporting the sound pickup part. The ring body is inserted into a cavum concha of the user and is locked in a vicinity of an intertragic notch. The holding part holds the sound pickup part so that a microphone hole is oriented to outside of the ear canal and the microphone hole is positioned on a farther side of an entrance of the ear canal.

Abstract: According to the present disclosure, a sound output device includes: a sound acquisition part configured to acquire sound to be output to the other end of a sound guide part, one end of which is arranged near an entrance of an ear canal of a listener, the sound guide part having a hollow structure; and a head-related transfer function adjustment part configured to adjust a head-related transfer function of sound captured by the sound guide part. Since the head-related transfer function adjustment part adjusts the head-related transfer function of sound captured by the sound guide part, it is possible to listen to both ambient sound and sound provided from a sound output device such that the listener does not feel strangeness even in the state in which the listener is wearing the sound output 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: To provide a sound pickup device which is worn on an ear of a user and used. A sound pickup device includes: a sound pickup part; and a holding part that includes a sound transmission part and is configured to hold the sound pickup part in an ear canal of a user. The holding part includes a ring body having an opening portion that serves as the sound transmission part, and one or more arms each of which has one end coupled to the ring body and another end supporting the sound pickup part. The ring body is inserted into a cavum concha of the user and is locked in a vicinity of an intertragic notch. The holding part holds the sound pickup part so that a microphone hole is oriented to outside of the ear canal and the microphone hole is positioned on a farther side of an entrance of the ear canal.

Abstract: The present disclosure relates to a signal processing device, a signal processing method, and a program that allows for generating an input signal suitable for a multi-way speaker. A band dividing unit divides an audio signal into signals in a plurality of bands corresponding to respective bands of a plurality of speaker units of the multi-way speaker. A filter processing unit performs wave front synthesis filter processing on each of the audio signals in the respective bands having been divided into. The audio signal in each of the bands after the wave front synthesis filter processing is supplied to the speaker unit of the corresponding band in the multi-way speaker. The present disclosure is applicable, for example, to a signal processing device or other devices.

Abstract: According to the present disclosure, a sound output device includes: a sound acquisition part configured to acquire sound to be output to the other end of a sound guide part, one end of which is arranged near an entrance of an ear canal of a listener, the sound guide part having a hollow structure; and a head-related transfer function adjustment part configured to adjust a head-related transfer function of sound captured by the sound guide part. Since the head-related transfer function adjustment part adjusts the head-related transfer function of sound captured by the sound guide part, it is possible to listen to both ambient sound and sound provided from a sound output device such that the listener does not feel strangeness even in the state in which the listener is wearing the sound output device.

Abstract: An audio processing device includes a plurality of loudspeakers outputting audio for each band, a correction filter correcting an audio signal including a plurality of bands in accordance with characteristics of the plurality of loudspeakers, and a plurality of band division filters dividing the audio signal corrected by the correction filter into bands of the loudspeakers so that a phase difference of phase characteristics is approximately 0 degree or approximately 180 degrees. The correction filter is an inverse filter set with an impulse response based on the audio outputted for each band from the plurality of loudspeakers via the plurality of band division filters.

Abstract: [object] To provide a headphone device in which the influence of individual differences in virtual sound field reproduction is less likely to occur and which may listen external sounds naturally, [solution] A left-side headphone body and a right-side headphone body include speaker arrays which are formed of a plurality of speaker units which are arranged to surround auricles, respectively. The speaker array of the headphone body reproduces a sound field inside a closed curved surface in the vicinity of the auricle using wave field synthesis, and since reverberation or a diffraction effect occurs in the ear of each individual, the influence caused by individual differences is less likely to occur. In addition, the speaker array has the plurality of the speaker units arranged to surround the auricle and is not of a shape that blocks the ear of the listener, and then the external sound can be heard naturally.

Abstract: The present technology relates to a sound field reproduction apparatus and method, and a program, enabled to more accurately reproduce a sound field. A spacial filter application unit obtains a virtual speaker array drive signal of an annular virtual speaker array with a radius larger than a radius of a spherical microphone array, by applying a spacial filter to a spacial frequency spectrum of a sound collection signal obtained by having the spherical microphone array collect sounds. An inverse filter generation unit obtains an inverse filter based on a transfer function from a real speaker array up to the virtual speaker array. An inverse filter application unit applies the inverse filter to a time frequency spectrum of the virtual speaker array drive signal, and obtains a real speaker array drive signal of the real speaker array. The present technology can be applied to a sound field reproduction device.

Abstract: The present disclosure relates to a signal processing device, a signal processing method, and a program that allows for generating an input signal suitable for a multi-way speaker. A band dividing unit divides an audio signal into signals in a plurality of bands corresponding to respective bands of a plurality of speaker units of the multi-way speaker. A filter processing unit performs wave front synthesis filter processing on each of the audio signals in the respective bands having been divided into. The audio signal in each of the bands after the wave front synthesis filter processing is supplied to the speaker unit of the corresponding band in the multi-way speaker. The present disclosure is applicable, for example, to a signal processing device or other devices.

Abstract: To record and reproduce sound and an image so that content which entertains a viewer and which prevents the viewer from being bored is provided while realistic sensation is provided. Upon recording, image information shot by a plurality of cameras is recorded together with position and posture information of each camera, and acoustic information from a plurality of sound sources is recorded together with position information of each sound source. Upon reproduction, an image at a position of a viewer (eye direction) is reproduced, and a sound image is localized at the position of the viewer so that content which entertains the viewer and which prevents the viewer from being bored is provided while sound with realistic sensation is provided.

Abstract: The present technology relates to a sound field reproduction apparatus and method, and a program, enabled to more accurately reproduce a sound field. A spacial filter application unit obtains a virtual speaker array drive signal of an annular virtual speaker array with a radius larger than a radius of a spherical microphone array, by applying a spacial filter to a spacial frequency spectrum of a sound collection signal obtained by having the spherical microphone array collect sounds. An inverse filter generation unit obtains an inverse filter based on a transfer function from a real speaker array up to the virtual speaker array. An inverse filter application unit applies the inverse filter to a time frequency spectrum of the virtual speaker array drive signal, and obtains a real speaker array drive signal of the real speaker array. The present technology can be applied to a sound field reproduction device.

Abstract: A headphone apparatus includes sound reproduction units which respectively reproduce sound signals and are arranged so as to be separated from ear auricles of a headphone user, wherein each of the sound reproduction unit is configured by a speaker array including a plurality of speakers.

Abstract: An audiovisual apparatus includes a video projection section, a focal length adjustment section, an acoustic processing section, and an audio output section. The video projection section projects video corresponding to a video signal. The focal length adjustment section adjusts a focal length of the projected video. The acoustic processing section performs acoustic processing corresponding to the adjusted focal length, on an audio signal corresponding to the video signal. The audio output section outputs the audio signal on which the acoustic processing is performed.

Abstract: A method, apparatus, and computer-readable storage medium for processing a sound signal is provided. The method includes receiving first reference data associated with a positional relationship between reference locations on a first device, receiving second reference data associated with a positional relationship between reference locations on a second device, receiving a reference transfer characteristic, wherein the reference transfer characteristic is based on the first and second reference data, determining, by a processor, an actual transfer characteristic based on acoustic data resulting from a test signal, and calculating, by the processor, a correction coefficient based on a difference between the reference transfer characteristic and the actual transfer characteristic.

Abstract: An information processing system includes a display, a display sensor that detects a movement or a rotation of the display, a transducer unit as an earphone unit or a headphone unit, a sound processing part that processes an audio signal so as to localize a sound image in a position outside a head of a listener wearing the transducer unit and listening to sound, and an operation controller that computes an output from the display sensor to obtain a moving direction and a moving distance, or a rotation direction and a rotation angle of the display, and controls sound processing performed by the sound processing part in accordance with a result of the computation so that a positional relation between the display and the head of the listener is mapped as a positional relation between an image display surface and the head of the listener in a virtual viewing space.