Sony Corporation

Shusuke Takahashi

Akira Inoue

Masayuki Nishiguchi

Kazuki Ochiai

Akira Takahashi

Kazuya Tateishi

Shiro Suzuki

Mototsugu Abe

Keisuke Toyama

Chisato Kemmochi

Ryuichi Namba

Yoshiaki Oikawa

Manabu Uchino

Compensation accuracy is increased with respect to clip compensation in a case where signals from a plurality of microphones are subjected to an echo cancellation process. A signal processing device according to an embodiment of the present technology includes an echo cancellation unit that performs an echo cancellation process of canceling an output signal component from a speaker on signals from a plurality of microphones, a clip detection unit that performs a clip detection for signals from the plurality of microphones, and a clip compensation unit that compensates for a signal after the echo cancellation process of clipped one of the microphones on the basis of a signal of non-clipped one of the microphones.

Signal processing device, signal processing method, and program

An information processing apparatus including an acquisition section that acquires acquire an acoustic signal indicating a sound collection result of a sound collection device group and a control section that calculates 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.

Information processing apparatus and information processing method

The present technology relates to a voice input device and method 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 that estimates an utterance direction on the basis of a voice from an utterer that is input from the microphone array, and a driving unit that 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.

Voice input device and method for estimation of utterance direction

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.

Signal processing apparatus and signal processing method

An information processing apparatus for reproducing second content in synchronization with reproduction of first content by a second information processing apparatus different from the information processing apparatus, the first content comprising audio content. The information processing apparatus comprising circuitry configured to: extract a first feature from the audio content; obtain a second feature of the audio content, the second feature being together with the second content; compare the first feature with the second feature; and generate, based on results of the comparing, synchronization information used for reproducing the second content in synchronization with the first content.

Information processing apparatus, method, and program

A sound processing apparatus includes a sound determination portion operable to determine whether an input sound includes a first sound emitted from a particular source based on location information of the source, a sound separation portion operable to separate the input sound into the first sound and a second sound emitted from a source different from the particular source if the sound determination portion determines that the input sound includes the first sound, and a sound mixing portion operable to mix the first sound and the second sound separated by the sound separation portion at a prescribed volume ratio.

Sound processing apparatus, sound processing method and program

Provided is a signal processing apparatus including a first periodicity detecting section detecting periodicity information of an acoustic signal included in a first content, as first periodicity information, a second periodicity detecting section detecting the periodicity information of an acoustic signal included in a second content, as second periodicity information, a similarity calculating section calculating a similarity between the first periodicity information detected by the first periodicity detecting section and the second periodicity information detected by the second periodicity detecting section, and a synchronization information generating section generating synchronization information used at a time of synchronizing the first content and the second content, based on the similarity calculated by the similarity calculating section.

Signal processing apparatus, signal processing method, program, electronic device, signal processing system and signal processing method thereof

An audio processing apparatus includes an audio signal acquisition unit which acquires an audio signal of a musical piece, a feature value extraction unit which extracts a predetermined type of feature value from the audio signal acquired by the audio signal acquisition unit in time series, a change point detection unit which detects a change point in which the amount of change of the feature value extracted in time series by the feature value extraction unit is changed to be greater than a predetermined threshold value, a hook analysis unit which analyzes a hook place of the audio signal based on the feature value extracted by the feature value extraction unit in block units with the change point detected by the change point detection unit as a boundary, and a hook information output unit which outputs the hook place analyzed by the hook analysis unit as hook information.

Audio processing apparatus and method, and program

A tempo detection device includes: a basic feature amount extracting section which extracts a plurality of types of basic feature amounts from an input audio signal; a weighting and adding section which weights and adds the basic feature amounts of the plurality of types extracted in the basic feature amount extracting section to obtain an addition signal; and a tempo detecting section which detects BPM indicating the tempo on the basis of a periodic component included in the addition signal obtained in the weighting and adding section.

Tempo detection device, tempo detection method and program

A music piece reproducing apparatus has: a sound collecting unit collecting noise data of an ambient environment; an analyzing unit performing a frequency analysis to the noise data collected by the sound collecting unit and extracting a feature amount showing a feature of the noise data; a noise parameter database classifying the noise data every environment; and a reproducing unit reproducing music piece data which has been recorded in a recording medium and classified every category, wherein the analyzing unit classifies the noise data with reference to the noise parameter database on the basis of the extracted feature amount of the noise data, selects the previously-corresponded category of music pieces in accordance with a classification result of the noise data, and selects predetermined music piece data from music piece data classified into the selected category.

Music piece reproducing apparatus and music piece reproducing method

A volume adjusting apparatus includes a sound collecting unit configured to collect noise data of a surrounding environment, an analyzing unit configured to extract a feature value indicating a feature of the noise data collected by the sound collecting unit and a feature value indicating a feature of supplied musical tune data, and a control unit configured to generate volume adjustment information for adjusting playback volume of the musical tune data based on the feature value of the noise data and the feature value of the musical tune data and adjusts the playback volume of the musical tune data based on the volume adjustment information.

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Chiba, Japan

Shusuke Takahashi