公开(公告)号：US20210264934A1

公开(公告)日：2021-08-26

申请号：US16766284

申请日：2018-09-18

Applicant: SONY CORPORATION

Inventor： KAZUYA TATEISHI ,  SHUSUKE TAKAHASHI ,  AKIRA TAKAHASHI ,  KAZUKI OCHIAI

IPC: G10L21/0232 ,  G10L25/51 ,  H04R29/00 ,  H04R1/08 ,  G06N20/00

Abstract: It is desirable to provide an echo cancellation technique that enables an environmental change to be flexibly addressed. Provided is a signal processing apparatus including: an echo cancellation unit that learns an estimated transfer characteristic in a space through which a signal reproduced by a speaker is input to a microphone, and performs echo cancellation on the basis of the estimated transfer characteristic learned; and an environmental change detection unit that detects an environmental change, in which the echo cancellation unit learns the estimated transfer characteristic by causing the speaker to reproduce a sound for learning on the basis of detection of the environmental change.

公开(公告)号：US20210382131A1

公开(公告)日：2021-12-09

申请号：US16322758

申请日：2017-05-19

Applicant: SONY CORPORATION

Inventor： KAZUKI OCHIAI ,  SHUSUKE TAKAHASHI

IPC: G01S3/808 ,  G10L15/22 ,  G10L21/0232 ,  G10L25/84

Abstract: [Object] To provide a mechanism for evaluating the appropriateness of an employed noise segment. [Solution] An information processing apparatus including: an acquisition section configured to acquire an acoustic signal indicating a sound collection result of a sound collection device group; and a control section configured to calculate a first weight in accordance with a degree to which the acoustic signal acquired by the acquisition section is a signal obtained by observing stationary noise and to apply the first weight to a noise spatial correlation matrix that is a spatial correlation matrix obtained from a noise signal.

公开(公告)号：US20200333423A1

公开(公告)日：2020-10-22

申请号：US16753252

申请日：2018-09-27

Applicant: SONY CORPORATION

Inventor： KAZUKI OCHIAI ,  SHUSUKE TAKAHASHI ,  AKIRA TAKAHASHI ,  KAZUYA TATEISHI

IPC: G01S3/808 ,  H04R1/32

Abstract: The present technology relates to a sound source direction estimation device and method, and a program that can reduce an operation amount for estimating a direction of a target sound source. A first estimation unit estimates a first horizontal angle that is a horizontal angle of a sound source direction from an input acoustic signal. A second estimation unit estimates a second horizontal angle that is the horizontal angle of the sound source direction and an elevation angle, with respect to the first horizontal angle, in a predetermined range near the first horizontal angle. The present technology can be applied, in a case where a voice is uttered from a surrounding sound source (for example, a person), to a device having a function of estimating the direction in which the voice is uttered.

公开(公告)号：US20200329308A1

公开(公告)日：2020-10-15

申请号：US16753236

申请日：2018-09-27

Applicant: SONY CORPORATION

Inventor： KAZUYA TATEISHI ,  SHUSUKE TAKAHASHI ,  AKIRA TAKAHASHI ,  KAZUKI OCHIAI

IPC: H04R1/40 ,  G10L15/22

Abstract: The present technology relates to a voice input device and method, and a program that facilitate estimation of an utterance direction The voice input device includes: a fixed part disposed at a predetermined position; a movable part movable with respect to the fixed part; a microphone array attached to the fixed part; an utterance direction estimation unit configured to estimate an utterance direction on the basis of a voice from an utterer that is input from the microphone array; and a driving unit configured to drive the movable part according to the estimated utterance direction. The voice input device can be used by installation in, for example, a smart speaker, a voice agent, a robot, and the like.