Yamaha Corporation

Satoshi Ukai

Ryo Tanaka

Toshiaki Ishibashi

Mikio Muramatsu

Takayuki Inoue

Tetsuto Kawai

Satoshi Suzuki

Yuichiro Suenaga

Takashi Yamakawa

Seiichiro Hosoe

Ryo Oouchi

Motoichi Tamura

Shinya Koseki

Takamitsu Aoki

Hideaki Takehisa

Yoshifumi Oizumi

Kohei Kanamori

Masashi Suzuki

The audio signal processing method in accordance with one embodiment receives an audio signal, obtains a first image, estimates room information based on the obtained first image, sets an acoustic parameter according to the estimated room information, applies sound processing to the audio signal according to the set acoustic parameter, and outputs the audio signal subjected to the sound processing.

Audio signal processing method and audio signal processing device

A sound processing method includes: receiving, using the communication device, from the remote apparatus, a first sound signal representing first sound generated by a user of the remote apparatus; emitting, using the sound emitting apparatus, the first sound represented by the first sound signal; receiving, using the sound receiving apparatus, sound that includes second sound generated by a user of the sound processing system; generating a second sound signal by sound processing, using processing parameters, a reception sound signal generated by the sound receiving apparatus; transmitting, using the communication device, the second sound signal to the remote apparatus; updating the processing parameters based on the first sound signal or the reception sound signal; and stopping the updating of the processing parameters in a state where musical sound is included in at least one of the first sound or the second sound.

Sound processing method, and sound processing system

A filtering method includes: receiving a first audio signal and a second audio signal that include sound emitted from a same sound source at different volumes; generating a filter signal by convoluting adaptive filter coefficients into the second audio signal; removing components of the filter signal from the first audio signal; and limiting a gain of the adaptive filter coefficients to 1.0 or less.

Filtering method, filtering device, and storage medium stored with filtering program

An image processing method obtains a first input image from a camera, generates a background image based on the first input image, determines whether the first input image includes a specific object, determines whether the specific object satisfies a predetermined position condition in a case where the first input image includes the specific object, and replaces the specific object that satisfies the predetermined position condition with the background image.

Image processing method and image processing apparatus

An audio signal processing method includes receiving an audio signal corresponding to a voice of a talker, obtaining an image of the talker, estimating posture information of the talker using the image of the talker, generating a correction filter according to the estimated posture information, performing filter processing on the audio signal using the generated correction filter, and outputting the audio signal on which the filter processing has been performed.

Audio signal processing method and audio signal processing apparatus that process an audio signal based on posture information

A talker prediction method obtains a voice from a plurality of talkers, records a conversation history of the plurality of talkers, identifies a talker of the obtained voice, and predicts a next talker among the plurality of talkers based on the identified talker and the conversation history.

Talker prediction method, talker prediction device, and communication system

An audio signal processing method includes receiving an audio signal corresponding to a voice of a talker, obtaining an image of the talker, estimating position information of the talker using the image of the talker, generating, according to the estimated position information, a correction filter configured to compensate for an attenuation of the voice of the talker, performing filter processing on the audio signal using the generated correction filter, and outputting the audio signal on which the filter processing has been performed.

Audio signal processing method and audio signal processing apparatus that process an audio signal based on position information

A signal processing method includes obtaining, by a signal processing apparatus, a network delay time with respect to a device connected to the signal processing apparatus via a network, obtaining an input signal, determining an allowable upper limit of a delay time for an output signal corresponding to the obtained input signal based on the obtained network delay time and a total allowable delay time, selecting a signal processing having a longest delay time that is less than or equal to the allowable upper limit of the delay time, performing the selected signal processing on the obtained input signal, and transmitting the obtained input signal on which the selected signal processing has been performed, as the output signal, to the device connected to the signal processing apparatus via the network.

Signal processing method and signal processing apparatus

A microphone array system includes first microphones disposed along a first axis, second microphones disposed at equal intervals of a first distance from the first axis along a second axis orthogonal to the first axis, a beamforming processor that performs beamforming by filtering and combining audio signals from microphones, and, when the second microphones are projected onto the first axis, the first microphones and projected second microphones are disposed at equal intervals of a second distance, a distance between two microphones disposed at opposite ends, among the first microphones and the projected second microphones arranged along the first axis when the second microphones are projected onto the first axis, is larger than a distance between two microphones disposed at opposite ends, among the first microphones and the projected second microphones arranged along the second axis when the first microphones are projected onto the second axis.

Microphone array system

A word extraction method according to at least one embodiment of the present disclosure includes: converting, with at least one processor operating with a memory device in a device, received speech information into text data; converting the text data into a string of words including a plurality of words; extracting, with the at least one processor operating with the memory device in the device, a keyword included in a keyword database from the plurality of words; and calculating, with the at least one processor operating with the memory device in the device, importance levels of the plurality of words based on timing of utterance of the keyword and timing of utterance of each of the plurality of words.

Word extraction device, related conference extraction system, and word extraction method

A sound processing method performs near-end side sound collection processing to collect a sound on a near-end side and generate a sound collection signal, near-end side filter processing to adjust the sound collection signal using transfer characteristics of a far-end side, and near-end side sound emission processing to emit the sound collection signal that has been adjusted, from a speaker on the near-end side.

Sound processing method, remote conversation method, sound processing device, remote conversation device, headset, and remote conversation system

A sound collection device includes a sensor, a database, a microphone, and an electronic controller. The sensor detects a state of at least one of the sound collection device or a device equipped with the sound collection device, or both. The database is a database of noise sounds. The electronic controller includes a signal processing unit configured to read at least one noise sound from the database based on a detection value of the sensor and carry out a noise reduction process to reduce noise from a sound signal acquired by the microphone based on the at least one noise sound read from the database.

Sound collection device, moving body, and sound collection method

A sound pickup method includes splitting a sound pickup signal of a microphone of which sound pickup in a predetermined range is blocked by an acoustic obstacle, into a plurality of sound pickup signals and subjecting at least one sound pickup signal among the plurality of sound pickup signals to band limitation processing, and comparing characteristic amounts of the plurality of sound pickup signals including the sound pickup signal after being subjected to the band limitation processing and controlling a gain of the microphone in accordance with a result of comparing the characteristic amounts.

Sound pickup device and sound pickup method

A sound pickup method obtains a correlation between a first sound pickup signal of a directional first microphone and a second sound pickup signal of a non-directional second microphone, and performs level control of the first sound pickup signal or the second sound pickup signal according to a calculation result of the correlation.

A gain adjustment method includes using a sensor to measure a physical quantity that varies according to a distance, and adjusting a level of an audio signal obtained by a microphone according to a measurement result of the sensor.

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Hamamatsu, Japan

Satoshi Ukai