Sony Corporation

Sony Group Corporation

Tetsu Magariyachi

Yuhki Mitsufuji

Toru Nakagawa

Koyuru Okimoto

Yu Maeno

Homare Kon

Kazumi Fukuda

Kohei Asada

Go Igarashi

Naoki Shinmen

Takuma Domae

Hironori Satou

Kana Seno

The present technology relates to a signal processing apparatus and method, an acoustic reproduction apparatus, and a program that can achieve more realistic acoustic presentation. The signal processing apparatus includes an acoustic transfer characteristic convolution processing unit that convolves an acoustic transfer characteristic according to a current position of a presentation destination of a virtual sound source among the acoustic transfer characteristic associated with each position in a space and virtual sound source data of the virtual sound source. The present technology can be applied to an acoustic reproduction system.

Signal processing apparatus and method, acoustic reproduction apparatus, and program

An information processing device () according to the present disclosure includes: an acquisition unit () configured to acquire a first image including a content image of an ear of a user; and a calculation unit () configured to calculate, based on the first image acquired by the acquisition unit (), a head-related transfer function corresponding to the user by using a learned model having learned to output a head-related transfer function corresponding to an ear when an image including a content image of the ear is input.

Information processing device, information processing method, and information processing program

It is possible for a user to measure his/her head-related transfer characteristics with high accuracy. There is provided an information processing deviceincluding: an interface control unitthat controls a user interface related to measurement of a head-related transfer function of a user, in which the interface control unit controls an output of guide information guiding a direction of a head of the user to a designated direction. In addition, there is provided an information processing method including: controlling a user interface related to measurement of a head-related transfer function of a user by a processor, in which the controlling of the user interface further includes controlling an output of guide information guiding a direction of a head of the user to a designated direction.

Information processing device, information processing method, and program

The present disclosure relates to a signal processing device, a signal processing method, and a program that make it possible to readily achieve personalization of head-related transfer functions in all bands. A synthesis unit generates a third head-related transfer function by synthesizing a characteristic of a first band extracted from a first head-related transfer function of a user and a characteristic of a second band other than the first band extracted from a second head-related transfer function measured in a second measurement environment different from a first measurement environment in which the first head-related transfer function is measured. The present disclosure may be applied to, for example, a mobile terminal such as a smartphone.

Signal processing device and signal processing method

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.

Synthesizing a headphone signal using a rotating head-related transfer function

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.

HRTF measurement method, HRTF measurement device, and program

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.

Sound pickup device

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 in a time-frequency domain; The present technique can be applied to a sound processing apparatus.

Sound processing apparatus and method, and program

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.

Audio processing device and method

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.

Acoustic tube and acoustic reproduction apparatus

An in-the-ear device such as a binaural microphone and an earphone is provided. An in-the-ear deviceis used while being inserted into a human ear (external auditory canal), examples of which include the microphone and the earphone. This in-the-ear deviceincludes an in-the-ear device main body unitsubstantially round column-shaped and a cylindrical inner side insertion unitprovided to protrude from an end surface of the in-the-ear device main stomach body uniton an inner side. The in-the-ear device main body unitis inserted closer to the inside than a first curve of the external auditory canal. As will be described later, an end surface of the in-the-ear device main body uniton an outer side forms a surface substantially same as that of a cavum conchae while being worn. In addition, in the inner side insertion unit, the in-the-ear device main body unitis provided to protrude closer to the inner side than the first curve of the external auditory canal in order to be along the external auditory canal.

In-the-ear device

The present technology relates to an audio processing apparatus, a method, and a program that aim at enabling a sound to be reproduced more efficiently. A head-related transfer function synthesis section previously holds a matrix of a diagonalized head-related transfer function. The head-related transfer function synthesis section synthesizes an input signal in an annular harmonic domain for reproducing a sound and the previously held and diagonalized head-related transfer function. An annular harmonic inverse transformation section performs an annular harmonic inverse transformation on a signal obtained as a result of the synthesis by the head-related transfer function synthesis section on the basis of an annular harmonic function and thereby generates a headphone driving signal in a time frequency domain. The present technology is applicable to an audio processing apparatus.

Growing community of inventors

Kanagawa, Japan

Tetsu Magariyachi