Abstract: 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 unit 1 and a discussion unit 2, 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 11, a CU storage portion 13, and a CU control portion 16, the discussion unit includes a DU control portion 26, 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.

Abstract: 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 device 1 includes an output part 20 that outputs a reception signal s2, an input part 30 that combines signals input from each of a plurality of microphones 3 and generates a transmission signal s4, wherein the microphones 3 collect 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 s1 corresponding to the voice of the speaker, a removal signal generator 70 that generates a removal signal s5 removing the echo signal included in the transmission signal based on a filter coefficient F, a controller 50 that calculates the filter coefficient, and a removal part 80 that generates an echo removal signal s6 based on the transmission signal and the removal signal.

Abstract: The present invention provides a sound signal processing device that precisely detects various kinds of noises and that does not block output of voice signals even when detecting noise during the output of the voice signals. The sound signal processing device according to the present invention comprises: an input part 10; an input signal determination part 20 that determines whether an input signal from the input part is present; a noise detection part 30 that detects noise included in the input signal from the input part; an output part 80 that outputs the input signal as an output signal; an output switching part 52 that performs switching between an output state in which the output part outputs the output signal and a non-output state in which the output part does not output the output signal; and a control part 60 that controls the switching performed by the output switching part.

Abstract: 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 unit 1 and a discussion unit 2, 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 11, a CU storage portion 13, and a CU control portion 16, the discussion unit includes a DU control portion 26, 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.

Abstract: 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 unit 1 and a discussion unit 2, a running packet is repeatedly transmitted and received between both units, the discussion unit includes a DU control portion 26, and a DU communication portion 21, the control unit includes a CU communication portion 11, 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.

Abstract: 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 unit 1 and a discussion unit 2, 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 11, a CU storage portion 13, and a CU control portion 16, the discussion unit includes a DU control portion 26, 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.

Abstract: The present invention provides a sound signal processing device that precisely detects various kinds of noises and that does not block output of voice signals even when detecting noise during the output of the voice signals. The sound signal processing device according to the present invention comprises: an input part 10; an input signal determination part 20 that determines whether an input signal from the input part is present; a noise detection part 30 that detects noise included in the input signal from the input part; an output part 80 that outputs the input signal as an output signal; an output switching part 52 that performs switching between an output state in which the output part outputs the output signal and a non-output state in which the output part does not output the output signal; and a control part 60 that controls the switching performed by the output switching part.

Abstract: 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 device 1 includes an output part 20 that outputs a reception signal s2, an input part 30 that combines signals input from each of a plurality of microphones 3 and generates a transmission signal s4, wherein the microphones 3 collect 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 s1 corresponding to the voice of the speaker, a removal signal generator 70 that generates a removal signal s5 removing the echo signal included in the transmission signal based on a filter coefficient F, a controller 50 that calculates the filter coefficient, and a removal part 80 that generates an echo removal signal s6 based on the transmission signal and the removal signal.

Abstract: 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 (30) for detecting noise contained in an input signal (s1) includes a noise discrimination portion having a plurality of discrimination portions to which an input signal is input and a noise determination portion (35) determining noise based on individual discrimination results of the plurality of discrimination portions.

Abstract: 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 unit 1 and a discussion unit 2, 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 11, a CU storage portion 13, and a CU control portion 16, the discussion unit includes a DU control portion 26, 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.

Abstract: 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 (30) for detecting noise contained in an input signal (s1) includes a noise discrimination portion having a plurality of discrimination portions to which an input signal is input and a noise determination portion (35) determining noise based on individual discrimination results of the plurality of discrimination portions.

Abstract: 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 unit 1 and a discussion unit 2, a running packet is repeatedly transmitted and received between both units, the discussion unit includes a DU control portion 26, and a DU communication portion 21, the control unit includes a CU communication portion 11, 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.