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WO/2019/050849A1 |
Methods and systems provide dynamic selection of noise-cancelling algorithms, and dynamic activation and deactivation of microphones to provide multi-mode noise cancellation for a voice-detecting headset in situations where ambient noise...
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WO/2019/024621A1 |
An acoustic echo canceller output voice signal post-processing method and apparatus, relating to the technical field of signal processing. The method comprises: obtaining a preset AEC output signal subband spectrum (11); performing weigh...
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WO/2019/026117A1 |
A camera (12) of this security system (10) includes: an image capturing unit (12a) which captures an image of the surroundings of the camera (12); a person detection unit (12c) which detects a person on the basis of the image captured by...
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WO/2019/028115A1 |
Audio systems and methods of suppressing residual echo are provided that determine spectral mismatches by comparing a spectral density of a residual signal from an acoustic echo canceler to a spectral density of a program content signal....
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WO/2019/028111A1 |
Audio systems and methods are provided to reduce echo content in an audio signal. The systems and methods receive an audio signal and sound stage rendering parameter(s), and select a set of filter coefficients to filter the audio signal ...
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WO/2019/028113A1 |
Audio systems and methods for suppressing residual echo are provided. First and second audio program content signals are received, and a residual signal from an echo canceler is received. A first spectral mismatch is determined based at ...
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WO/2019/014637A1 |
Systems and methods are described for compensating for inaccurate echo prediction in audio systems. A signal may be received at a microphone of an audio system, the signal including audio rendered using a spatial audio renderer across a ...
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WO/2018/231534A1 |
A method for acoustic echo cancellation is disclosed herein. A microphone receives a second acoustic signal from a near-end environment, the second acoustic signal including a delayed version of the first acoustic signal from a far-end e...
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WO/2018/208721A1 |
Acoustic echo cancellation (AEC) processing may be improved by performing echo cancellation using a combined multi-channel reference signal. Two or more reference signals, such as a left and right channel of a stereo source, may be combi...
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WO/2018/193028A1 |
An apparatus for multichannel interference cancellation in a received audio signal comprising two or more received audio channels to obtain a modified audio signal comprising two or more modified audio channels is provided. The apparatus...
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WO/2018/188282A1 |
An echo cancellation method and device, a conference tablet computer, and a computer storage medium. The method comprises: obtaining a reference signal inputted to a loudspeaker for playback, and obtaining an acquisition signal of a micr...
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WO/2018/158558A1 |
This specification describes a device comprising: an acoustically transparent housing; a microphone array comprising a plurality of microphones for capturing audio data, the plurality of microphones being located at a lower end of the ho...
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WO/2018/144850A1 |
A method for establishing the routing of audio signals between a plurality of audio inputs and a plurality of audio outputs in a conferencing system. The method includes establishing a matrix comprising at least one available cross-point...
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WO/2018/135316A1 |
This nurse call system is provided with a nurse call device and a control appliance. The nurse call device includes a transmission switch, a nurse call communication unit for performing wireless communication with the control appliance, ...
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WO/2018/132465A1 |
Acoustic echo cancellation systems and methods are provided that can cancel and suppress acoustic echo from the output of a mixer that has mixed audio signals from a plurality of acoustic sources, such as microphones. The microphones may...
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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...
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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 ...
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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 ...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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 ...
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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...
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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 ...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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