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Matches 1 - 50 out of 13,865

Document Document Title
WO/2018/121972A1
A system and method for canceling acoustic echoes includes picking up with one or more microphones sound generated by a sound source and transferred from the sound source to the one or more microphones via one or more unknown transfer pa...  
WO/2018/121971A1
Canceling acoustic echoes includes picking up with a microphone sound generated by a sound source and transferred from the sound source to the microphone via an unknown transfer path having an unknown transfer function, and providing an ...  
WO/2018/092659A1
An electronic apparatus 1 that includes: a proximity sensor 18; a communication unit 17 that communicates with indoor equipment for an interphone; and a controller 11 that, when the communication unit 17 acquires a signal that indicates ...  
WO/2018/078818A1
An interphone system for use in collective housing constituted by a plurality of residential buildings and a centralization building (5) capable of communicating with each residential building, each of the residential buildings comprisin...  
WO/2018/078819A1
An interphone system for use in collective housing constituted by a plurality of residential buildings and a central building (5) capable of communicating with each residential building. Each of the residential buildings is provided with...  
WO/2018/078817A1
Provided is a distributed interphone system capable of simplifying the setting and registration of devices involved in additional installations or the like. An interphone system (1) is provided with a residential-unit master device (30A)...  
WO/2018/075411A1
Various transmission systems may benefit from techniques to improve the quality of the transmission. For example, certain full duplex transmission systems may include a virtual hybrid coupler. A circuit can include a first feedback resis...  
WO/2018/074520A1
The purpose of the present invention is to reduce image distortion and also reduce visual discomfort. An interphone system (10) according to the present invention is provided with an image correction unit (23) which corrects distortion o...  
WO/2018/055694A1
Provided is an elevator system which, when a call is made between an elevator call device and a telephone installed at a location other than the elevator, is capable of starting, in a short time, a subsequent call after a call has once b...  
WO/2018/052678A1
A full duplex voice communication method constituted of: estimating an acoustic echo within a near-end signal; cancelling the estimated acoustic echo; detecting whether, or not, a change has occurred in a near-end acoustic echo path, the...  
WO/2018/048678A1
Howling or oscillation in an in-vehicle communications system is prevented when the speaker gain or microphone gain is detected as giving rise to a loop gain equal to or greater than one for a particular frequency or band of frequencies ...  
WO/2018/040432A1
Disclosed are a method and system for implementing a voice call, and an intelligent conference device. The method comprises: receiving audio signal data sent by a peer terminal, and caching the audio signal data in a playback cache regio...  
WO/2018/040431A1
Disclosed are a method and an apparatus for processing signal data, and an intelligent conference device. The method comprises: obtaining data length information of signal data of a reference cache region and an input cache region within...  
WO/2018/042687A1
A camera system comprising a camera and a hub connected to the camera, wherein the camera system allows handing over while the hub and a portable terminal device (smart phone) are communicating via a router. This camera system adopts a c...  
WO/2018/040430A1
Disclosed are a method and an apparatus for determining an echo delay, and an intelligent conference device. The method comprises: obtaining audio signal data, and storing the same in a reference cache region when an audio output device ...  
WO/2018/030483A1
In the present invention, a communication system (1) includes a relay system (10) disposed in a cloud-based network (3). The relay system (10) has: a push server (15) for delivering, in response to a call from an intercom (21), a push no...  
WO/2018/030020A1
The central processing unit and the central processing method according to the present invention manage predetermined events that are associated with persons to be monitored and that are detected by sensor devices provided to correspond ...  
WO/2018/006856A1
Disclosed are an echo cancellation method and terminal, and a computer storage medium. The method comprises: caching at least one collected frame of a first voice signal, wherein the at least one frame of the first voice signal comprises...  
WO/2018/005979A1
Techniques of performing acoustic echo cancellation involve providing a bi-magnitude filtering operation that performs a first filtering operation when a magnitude of an incoming audio signal to be output from a loudspeaker is less than ...  
WO/2017/223200A1
In some examples, devices for detecting and measures a ghost echo current in an audio signal are described. For instance, the device may be configured to sample a current of an audio signal, compare with an expected current, and determin...  
WO/2017/209094A1
Provided is a monitoring system to reduce the burden on caregivers or the like, wherein, even if notifications to caregivers or the like are halted under certain conditions, the monitoring system is capable of minimizing confusion when t...  
WO/2017/202292A1
Disclosed in an embodiment of the invention is a method for tracking an echo delay, comprising: acquiring a current frame reference signal and an acquired current frame signal; identifying, in the acquired current frame signal, informati...  
WO/2017/168489A1
A terminal device (10, 20) configured so as to be capable of communicating with a dwelling parent device (30) installed in each dwelling, wherein the terminal device is provided with: an input unit (102) with which it is possible to inpu...  
WO/2017/170057A1
An intercom system to be used in a multi-dwelling complex configured from a plurality of residence buildings, wherein each of the plurality of residence buildings is equipped with: living room parent units (30) installed in each living r...  
WO/2017/170151A1
An intercom system used in a housing complex constituted by a plurality of dwelling buildings, wherein each of the plurality of dwelling buildings is provided with a dwelling parent device 30 installed in each dwelling, a collective foye...  
WO/2017/168488A1
An intercom system to be used in a multi-dwelling complex configured from a plurality of residence buildings, wherein each residence building is equipped with: living room parent units (30) installed in each living room; a call unit capa...  
WO/2017/168679A1
The present invention involves initiating communication between an intercom master unit and an intercom slave unit that is installed in an environment where a ringing sound output from a speaker would reverberate, outputting a ringing so...  
WO/2017/168490A1
Each of a plurality of residence buildings in the present invention is equipped with living room parent units (10), a management room parent unit (20), and a building control unit (40) for connecting each of the living room parent units ...  
WO/2017/170150A1
An intercom system equipped with living room parent units installed in each living room, a complex entrance unit configured so as to be capable of communicating with the living room parent units, and a control device for controlling the ...  
WO/2017/162115A1
Provided are an echo delay detection method, an echo cancellation chip and a terminal device. The method comprises: when a call access request is detected, acquiring an audio signal collected by an audio input device of a terminal device...  
WO/2017/162974A1
The invention relates to a method for controlling an intercommunication system onboard a vehicle (100) comprising a plurality of seats (111, 112), each equipped with a sound reproduction device, said seats (111, 112) being distributed in...  
WO/2017/158683A1
Provided is an elevator system such that when a telephone at an information center receives an incoming emergency call from an elevator intercom via an analog public telephone network, a monitoring agent at the information center can, wh...  
WO/2017/144557A1
An intercom device and a method of recording an audio stream at the intercom device. The intercom device includes a user interface, a memory, and an electronic processor. The electronic processor is communicatively coupled to the user in...  
WO/2017/145679A1
In a terminal device and a display method therefor according to the present invention, when an event notification communication signal, which contains event information indicating the content of a prescribed event involving a person to b...  
WO/2017/143805A1
Disclosed in the present invention are an echo elimination method and device. The method comprises: detecting whether a near-end signal contains an audio signal; processing, according to a normalized least mean square (NLMS) filtering al...  
WO/2017/143740A1
The present invention provides a peripheral device of a mobile phone for improving a voice function of the mobile phone. The peripheral device comprises a host (1) and a mobile phone fixing member (2). The host (1) comprises multiple dir...  
WO/2017/140070A1
The invention relates to a method and system for cancelling noise in voice communication conducted by an intelligent device. The method comprises: acquiring valid audio devices having audio data and located in the same wireless network a...  
WO/2017/136587A1
Described herein is a method and audio capture system for suppressing noise due to mechanical disturbances in an audio capture system. In one embodiment a method includes the steps of: a) receiving an input audio signal from a microphone...  
WO/2017/134798A1
A voice communication device according to the present invention is a voice communication device for an elevator, the voice communication device characterized in being provided with: a parameter-holding unit for holding a parameter depend...  
WO/2017/130330A1
[Problem] To provide a multiple dwelling house interphone system wherein a centralized collective entrance machine or a centralized controller can make a call without storing the numbers of a building and a room to which a callee termina...  
WO/2017/123813A1
Systems and methods for acoustic echo cancellation are provided. An example method includes receiving a reference signal. The reference signal represents at least one sound captured inside an enclosure of a loudspeaker. The loudspeaker i...  
WO/2017/116863A1
A system includes a feedback filter configured to receive an audio signal from a microphone and to process the audio signal based on a feedback path between a loudspeaker and the microphone. The system also includes an adaptive filter co...  
WO/2017/096923A1
Disclosed in the present invention are a method and system for alleviating hands-free call echo of a mobile terminal. The mobile terminal comprises a loudspeaker, a primary microphone, and a secondary microphone. The distance from the pr...  
WO/2017/098633A1
Priority levels of portable terminals that operate in cooperation with an electrical appliance are dynamically switched on a user-by-user basis or in accordance with the locations of users in the home. An intercom host 28 includes a prio...  
WO/2017/099728A1
A method for residual echo suppression is provided. Embodiments may include receiving an original reference signal and applying a distortion function to the original reference signal to generate a second signal. Embodiments may include g...  
WO/2017/098948A1
Provided is a nurse call system with which, when nurses have been notified of a nurse call from a patient, it is possible to reduce the burden on the nurses. A nurse call system in which, upon receipt of a nurse call a management server ...  
WO/2017/080505A1
The present invention relates to the technical field of audio testing, and in particular to an echo suppression testing method. The echo suppression testing method comprises: a first audio signal generator arranged on a sending module ge...  
WO/2017/080371A1
The present disclosure provides a method and device for improving the adaptive learning of an acoustic echo canceller. The method comprises: when it is detected that there is double-talk, acquiring a filter coefficient history value of a...  
WO/2017/083530A1
An acoustic echo canceller includes an adaptive filter and a double-talk detector. The adaptive filter includes a linear filter and a coefficient calculator. The linear filter has a transfer function that is controlled by a set of variab...  
WO/2017/080504A1
The present invention relates to the technical field of audio tests. Provided is a test method for an audio conversion device. The method comprises: after a test signal generated by a first audio signal generator reaches a receiving modu...  

Matches 1 - 50 out of 13,865