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WO/2010/090249A1 |
Provided is a telephone switchboard capable of reliably making a notification to a notification destination when an abnormal sound is produced. A telephone switchboard (10) is connected to a plurality of terminals (201 to 215, 30) and c...
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WO/2010/073181A1 |
The present invention provides an improved determination of an acoustic coupling between a loudspeaker (110) and a microphone (120), which results in a better estimate of the acoustic coupling during double talk. This is achieved in a de...
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WO/2010/066496A1 |
The present invention provides a method and apparatus for finding an estimate of the delay of a signal travelling between two points. A quantity is evaluated from the signal at a final number of time instants, at both a reference point a...
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WO/2010/065501A1 |
A communications device that is configured to detect double talk is described. An echo canceller is configured to cancel an echo from an input signal using an adaptive filter. A double-talk detector provides a double-talk statistic. The ...
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WO/2010/051509A1 |
Methods and systems for selectively switching between microphones in a plurality of microphones are disclosed, including providing a first state that corresponds to one or more microphones selected from the plurality of microphones. A su...
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WO/2010/050841A1 |
An adaptive filter configured to use multiple algorithm species that differ in the quality of echo suppression and respective burdens imposed on the computational resources of the host communication device. Depending on the available com...
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WO/2010/042326A1 |
A compact low cost beamforming microphone assembly for a desk telephone is described. The assembly includes a microphone carrier array having a top surface and having faces arrayed about an exterior surface, each to receive a microphone....
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WO/2010/039437A1 |
A mobile communications device contains at least two microphones. One microphone is designated by a selector to provide a voice dominant signal and another microphone is designated to provide a noise or echo dominant signal, for a call o...
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WO/2010/035524A1 |
Provided is an intercom system that includes a sub-unit which is placed outside a house, and a base unit which is placed inside the house. The sub-unit includes an imaging means that images a predetermined area in front of the sub-unit a...
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WO/2010/032502A1 |
Provided is an intercom system that includes a sub-unit which is placed outside a house, and a base unit which is placed inside the house. The sub-unit includes a visitor information acquisition means that acquires visitor information, a...
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WO/2010/027722A1 |
The application relates to a method for determining at least one updated filter coefficient of an adaptive filter (22) adapted by an LMS algorithm. According to the method, filter coeffi-cients of a first whitening filter (25') are deter...
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WO/2009/149737A1 |
A method for reducing a disturbance in an input signal caused by an output signal in a multi-port connector (3), a multiport connector circuit for reducing a disturbance in an input signal caused by an output signal, and a mobile device ...
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WO/2009/128566A1 |
A sound pickup apparatus includes a plurality of microphones (21a-21d, 22a-22d), and a controller (50) that receives signals from the plurality of microphones respectively. When the controller detects a failure in one of the plurality of...
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WO/2009/128274A1 |
An intercom system which allows continuous communication, securement of high security, and acquisition of satisfactory user-friendliness even in premises including an area wherein use of radio is prohibited or restricted. In an LED illum...
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WO/2009/121372A1 |
An interface unit (100, 200, 300) comprising a communication device connection side (101, 201, 301 ) and a phone connection side (102, 202, 302) is described. The communication device connection side (101, 201, 301 ) comprises a first co...
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WO/2009/110961A1 |
A cancellation system is disclosed for processing incoming and outgoing signals in a transform domain to create a cancellation signal for reducing or removing unwanted interference. Data is ordered based on Good-Thomas indexing into a tw...
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WO/2009/110809A1 |
A method of acoustic echo cancellation in the VoIP terminal using processing of the far-end signal with the digital adaptive filter in order to obtain the echo estimate that is subtracted from the microphone signal in which the far- end ...
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WO/2009/095161A1 |
An embodiment of an apparatus (200) for computing filter coefficients for an adaptive filter (210) for filtering a microphone signal so as to suppress an echo due to a loudspeaker signal includes extraction means (250) for extracting a s...
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WO/2009/092709A1 |
A method for removing an echo component in a first signal received at an audio input device, said method comprising the steps of outputting a second signal from an audio output device, receiving at the audio input device the first signal...
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WO/2009/092522A1 |
An embodiment of an apparatus (200) for computing control information for a suppression filter (210) for filtering a second audio signal to suppress an echo based on a first audio signal includes a computation means (220) having a value ...
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WO/2009/088431A1 |
The invention includes a method and apparatus for detecting and suppressing echo in a packet network. A method according to one embodiment includes extracting voice coding parameters from packets of a reference packet stream, extracting ...
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WO/2009/082194A1 |
The invention relates a telephone device (TD) arranged to receive a microphone signal (TX) from a microphone (MI) and a speaker signal (RX) from a line interface (LIF). The telephone device is arranged to transmit the microphone signal (...
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WO/2009/078733A1 |
Different sampling rates between a playout unit and a capture unit are compensated for. The playout unit receives samples from a computational unit, and the capture unit sends samples to the computational unit. A playout fifo buffer oper...
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WO/2009/073305A1 |
Tools and techniques for activating a wireless device on a wireless network. In an aspect, such tools can allow an unactivated wireless device (that is, a wireless device that generally would be inoperable on a wireless network) to be gi...
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WO/2009/070073A1 |
A method and arrangement for cancelling echoes in a communication terminal (400) during a voice call with an opposite party. The communication terminal (400) comprises an echo cancelling unit (416,600) adapted to produce an estimate of e...
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WO/2009/061711A1 |
A method is provided for allocating and providing power to network devices. The method includes (i) receiving an electronic request to power a network device with a requested amount of power, (ii) establishing a worst-case current draw o...
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WO/2009/055290A1 |
In one embodiment, an echo canceller configured to cancel echo in a wideband voice conference is provided. A double-talk condition may be when a plurality of users are speaking substantially simultaneously. When a double-talk condition i...
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WO/2009/029076A1 |
A method and corresponding apparatus for coded-domain acoustic echo control is presented. An echo control problem is considered as that of perceptually matching an echo signal to a reference signal. A perceptual similarity function that ...
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WO/2009/029605A1 |
A method (200) of cancelling echo in a duplex communication device (100). The method can include detecting a level of noise present on an uplink signal path (104), generating a noise classifier (194) based on the detected level of noise,...
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WO/2009/022502A1 |
To utilize existing communication networks to minimize the capital investment, while enabling communications of various commands and data. A communication system comprises a mobile terminal apparatus (10) in which a telephone communicati...
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WO/2009/023616A1 |
An echo canceller (106) can include a first multi-band filter (152) which receives a first input signal (108) and generates a first plurality of sub-band signals (110, 111, 112), and a second multi-band filter (154) which receives a seco...
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WO/2009/019867A1 |
A recorder comprises a broadcast receiving unit for receiving broadcast data, a captured image receiving unit for receiving captured image data captured by a camera device, a storage unit capable of storing the broadcast data received by...
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WO/2008/122930A1 |
Sound from a microphone is processed before it is output by a loudspeaker. Feedback cancellation is used to reduce a feedback effects from the loudspeaker to the microphone. As part of feedback cancellation a microphone feedback componen...
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WO/2008/120436A2 |
A voice conference apparatus (1) includes a sound collecting unit (2b) and a loudspeaker (30), while the sound collecting unit has a directional polar sensitivity characteristic which has a higher sensitivity with respect to sounds which...
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WO/2008/112531A1 |
A telephony system equipped with an echo cancellation module is disclosed. A hybrid interface circuit outputs an outbound signal to a wall jack while receiving an inbound signal from the wall jack. The inbound signal may contain a line e...
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WO/2008/112536A1 |
A telephone system comprising an analog telephone and a full-duplex speakerphone adapter is disclosed. The analog telephone comprises an ordinary analog telephone subscriber circuit for transmitting and receiving analog signals and a han...
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WO/2008/112539A1 |
A voice communication device with an integrated framework structure for echo cancellation and noise reduction is disclosed. A microphone receives a local input signal while a speaker is outputting a local output signal. The local input s...
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WO/2008/112302A1 |
A headset utilizing an extendable microphone boom that positions the microphone closer to the user's mouth when deployed. A wireless headset that is adjustable to the user's face and ear geometry through the use of a flexible joint betwe...
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WO/2008/105537A1 |
When the test button of a master unit (1) of interphone capable of conversation with a door phone (2) is depressed, an inspection signal is transmitted to a fire alarm (3) in order to request operation confirmation test. Upon receiving t...
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WO/2008/105450A1 |
A fire alarm (3) sends, when it detects something wrong in its self-inspection, a failure signal to an intercom parent (1) capable of communicating with a door intercom (2), thereby to notify the intercom parent (1) of the trouble of the...
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WO/2008/105536A1 |
When the master unit (1) of interphone capable of conversation with a door phone (2) and fire alarms (3, 3, 3) are outputting a warning sound and an alarm stop button of the master unit (1) of interphone is depressed (first time depressi...
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WO/2008/103087A1 |
A double talk, detector (14) for controlling the echo path estimation in a telecommunication system by indicating when a received coded speech signal (6) is dominated by a non-echo signal (5), i.e. that so-called double talk exists. This...
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WO2008061205A9 |
One embodiment relates to a module for assisting with occupant to occupant communications in a vehicle is provided. The module is for use with a vehicle audio system mounted in the vehicle, the vehicle having a front half and a rear half...
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WO/2008/096253A2 |
An external (11) or internal (18) intercom and/ or video entry door station equipped with aids for people with limited visual, auditory and verbal capacities, comprising one or more of the following parts : keyboard (15, 22), visualisati...
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WO/2008/086920A1 |
A method is provided for transmitting a digital signal y(n), y(n) comprising a useful signal and a perturbation signal p(n). The method comprises the steps of: receiving the Linear Prediction Coefficients (LPC) Ay of the a signal ye(n), ...
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WO/2008/073057A1 |
An interrupt payment system (100) comprising means (100) for detecting an interrupt signal generated by a party to a call; means (102) for obtaining details of a payment to be made on detection of an interrupt signal; a payment processor...
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WO/2008/069660A1 |
The invention relates to telephone device, comprising a processing unit arranged to receive a microphone signal from a microphone and a speaker signal from a line interface and is arranged to transmit the microphone signal to the line in...
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WO/2008/062606A1 |
An intercom device is provided, which has the capability of providing a howling prevention function over a wide frequency region with improved cost performance. This intercom device has a speaker unit, a first microphone spaced from the ...
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WO/2008/058492A1 |
The invention relates to a method for adaptive filtering in which a level of a reference signal necessary for the adaptive filtering is determined in the context of an adaptation by estimation, using a quantity equivalent to the referenc...
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WO/2008/056503A1 |
A door phone system that has an indoor unit with improved convenience and with which, while viewing a smooth video, a user can conduct dialog through the indoor unit with a visitor present near an outdoor unit. The door phone system (100...
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