Audio-technica Corporation

Kazuhiro Onizuka

Toru Aikawa

Yasuhito Kikuhara

Takashi Nara

Shinken Kanemaru

Eri Nakano

Yuri Jitsukata

Yasuyuki Morimoto

A beamforming microphone system capable of reducing a processing load caused by calculation of directivity and flexibly setting an area where sound is picked up. A beamforming microphone system according to the present invention includes: a plurality of microphone units; a signal processing unit that processes a sound pickup signal from each microphone unit at each predetermined time; and a storage that associates, for each sound pickup area, sound pickup area information with individual-sound-pickup-area position information freely set within the sound pickup area and stores the information. The signal processing unit includes a position information identification unit that identifies sound source position information, a signal generation unit that generates the sound signal corresponding to the sound from the sound source position, and a channel assignment unit that assigns an output channel, based on the individual-sound-pickup-area position information on the individual sound pickup area to which the sound source position belongs.

Beamforming microphone system, sound pickup program and setting program for beamforming microphone system, beamforming microphone setting device, and beamforming microphone setting method

A data transmission device and a data transmission system that can share data generated based on data received from each terminal, and update the shared data in the operation of the system are provided. The data transmission device sends and receives a packet to and from the terminal connected thereto via a communication network and the packet includes a first slot in which individual output data to be output from the terminal is stored and a second slot in which input data to be input to the terminal is stored. The data transmission device includes a sending part that sends the packet to the terminal, a receiving part that receives the packet sent to the terminal, and a controller that generates the input data based on output data including the individual output data stored in the first slot and stores the input data in the second slot.

Data transmission device and data transmission system

Provided are a wireless earphone charger, a wireless earphone, and a wireless earphone system that improve visibility and design of an indicator of the charger. The wireless earphone chargeris configured to charge a wireless earphone including a receiving circuitconfigured to receive a sound signal via a wireless communication line, and an earphone rechargeable batteryconfigured to charge power to be supplied to the receiving circuit. The wireless earphone charger includes a rechargeable batteryconfigured to charge power to be supplied to the earphone rechargeable battery, an indicatorA configured to indicate a plurality of indication modes, and a controllerconfigured to switch the indication modes. The indication modes of the indicator include a first indication mode for indicating a remaining power of the rechargeable battery, and a second indication mode for indicating a remaining power of the earphone rechargeable battery. The indicator indicates only one of the indication modes.

Wireless earphone charger, wireless earphone and wireless earphone system

A conference system, capable of reliably managing a connection state of a discussion unit and a control unit and continuously acquiring information from the discussion unit when a connection abnormality occurs, is provided. A conference system S includes a control unitand a discussion unit, a running packet is repeatedly transmitted and received between both units, the running packet includes a counter flag, the control unit includes a CU communication portion, a CU storage portion, and a CU control portion, the discussion unit includes a DU control portion, the DU control portion increments the count value of the counter flag, and each time the running packet is received from the discussion unit, the CU control portion compares a count value stored in the CU storage portion and the count value of the counter flag included in the running packet received from the discussion unit.

Conference system

A sound signal processing device, a sound signal processing method, and a sound signal processing program can remove echo signals included in input signals from a plurality of microphones with a simple circuit configuration are provided. The present deviceincludes an output partthat outputs a reception signal s, an input partthat combines signals input from each of a plurality of microphonesand generates a transmission signal s, wherein the microphonescollect an echo component of the reception signal and voice of a speaker and generate an echo signal es corresponding to the echo component and a sound signal scorresponding to the voice of the speaker, a removal signal generatorthat generates a removal signal sremoving the echo signal included in the transmission signal based on a filter coefficient F, a controllerthat calculates the filter coefficient, and a removal partthat generates an echo removal signal sbased on the transmission signal and the removal signal. The controller calculates individual filter coefficients k corresponding to the respective microphones, and calculate the filter coefficient by combining the individual filter coefficients.

Sound signal processing device, sound signal processing method and sound signal processing program

A stable conference system, which is reduced in the processing load placed on the system and receives a speech request from a discussion unit reliably, is be provided. A conference system S includes a control unitand a discussion unit, a running packet is repeatedly transmitted and received between both units, the discussion unit includes a DU control portion, and a DU communication portion, the control unit includes a CU communication portion, and an audio slot, the DU control portion adds a request flag to the running packet, the audio slot receives audio information from the discussion unit, and when the running packet, with the request flag added, is received from the discussion unit, the CU communication portion transmits a content acquisition packet, carrying an acquisition command to acquire a content, to the discussion unit, which added the request flag, if the audio slot is vacant.

A noise detector and a sound signal output device are provided that can detect high accuracy various types of noise including composite noise. The noise detector () for detecting noise contained in an input signal (s) includes a noise discrimination portion having a plurality of discrimination portions to which an input signal is input and a noise determination portion () determining noise based on individual discrimination results of the plurality of discrimination portions. The noise discrimination portion includes at least two of a frequency component discrimination portion () discriminating the presence or absence of noise based on a frequency component of the input signal, a temporal change discrimination portion () discriminating the presence or absence of noise based on a temporal change of the input signal and a high-frequency component discrimination portion () discriminating the presence or absence of noise based on a high-frequency component of the input signal The noise determination portion determines noise based on individual discrimination results of the plurality of discrimination portions.

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Tokyo, Japan

Kazuhiro Onizuka