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Patent Searching and Data


Matches 201 - 250 out of 14,267

Document Document Title
WO/2014/043176A1
An audio communication system includes a headset with a microphone having two electrical outputs and a first electro-acoustic driver. The system includes first and second differential amplifiers, and a first electrical conductor for elec...  
WO/2014/005473A1
Disclosed are a method and system for correcting a sampling rate deviation of transmitter and receiver ends, which can obtain a high-precision sampling rate deviation in real time, and perform the sampling rate correction on transmitter ...  
WO/2014/000476A1
Disclosed are a voice noise reduction method and device for a mobile terminal, which relate to the technical field of communications, and can improve the noise reduction effect. The present invention comprises: selecting a currently oper...  
WO/2014/004790A1
A method (800) for determining an estimate (215, 261) of an echo path property of an electronic device (200, 250, 300, 600). The electronic device is configured to render a total audio signal using a loudspeaker (102), and the electronic...  
WO/2013/184362A1
The detection of double-talk in audio communication is provided. A communication device may receive an echo signal mixed with a speech signal at a near end location. The echo signal may be generated by speech transmitted by a remote part...  
WO/2013/182311A1
The invention relates to a method for producing a leukocyte preparation from a leukocyte fraction. The invention further relates to a correspondingly produced or producible leukocyte preparation, and to the use thereof. The method accord...  
WO/2013/179372A1
A communication device (100) comprises: a first acquisition means (110) for acquiring charging apparatus-associated information which is information relating to a charging apparatus (10) which is installed externally to a residence; a se...  
WO/2013/166567A1
The present invention relates to a method for transmitting data between two devices, including the encoding of the digital data as acoustic digital signals, the transmission of this digital signal for playback by the loudspeakers of the ...  
WO/2013/163873A1
Disclosed in an embodiment of the present invention is a telephone terminal, the telephone terminal comprising a first handset end, a second handset end, a sound processing unit, and an input/output unit; the sound processing unit receiv...  
WO/2013/121306A3
Communications equipment for use by a call centre to enable communications between the call centre and one or more user devices is provided, with the communications equipment comprising audio processing circuitry for processing audio sig...  
WO/2013/155670A1
A standby power supply circuit (300) for a 2-wire bus intercom system and an apparatus thereof. The standby power supply circuit (300) is separated into two power supply modules, in which the first power supply module is a power supply t...  
WO/2013/141912A2
A compressor (20) has an inlet (24). An outlet (26) is downstream of the inlet along a flowpath when the compressor is in a first operational condition. A centrifugal impeller (28) is mounted for rotation about an impeller axis. A supers...  
WO/2013/127302A1
Provided are a method and terminal for preventing voice crosstalk between an external loudspeaker and a microphone, relating to the field of communications, which can effectively prevent voice crosstalk between an external loudspeaker an...  
WO/2013/127412A1
The invention relates to a bidirectional communication system (10) with compensation for undesired feedback, comprising - a first compensating unit (CU1) which is paired with a first output unit (OU1) and a first input unit (IU1) and whi...  
WO/2013/121306A2
Communications equipment for use by a call centre to enable communications between the call centre and one or more user devices is provided, with the communications equipment comprising audio processing circuitry for processing audio sig...  
WO/2013/103770A1
A personal sound system includes a portable electronic device that provides an analog audio signal to an audio output; an earphone system, connected by wire to the audio output, the portable electronic device, the earphone system includi...  
WO/2013/097357A1
An echo canceller and an echo cancellation method. The echo canceller comprises: a self-adaptive filter, a speech signal detecting portion and a path change detecting portion. A remote speech signal is propagated in an echo path through ...  
WO/2013/097372A1
Disclosed are a multi-receiver end echo cancellation method and system. In the present invention, an echo filter is used to carry out echo filtering on M-path receiver end signals to obtain M-path filtered receiver end signals; the M-pat...  
WO/2013/049741A3
Method, device, system and computer program product for processing audio signals at the device for use in a communication event. The device comprises audio output means for outputting audio signals of the communication event. The device ...  
WO/2013/089931A1
An accessory device having multiple speakers and/or microphones to perform a number of audio functions, for use with mobile devices, is provided. The audio transducers (e.g., microphones and/or speakers) may be housed in one or more exte...  
WO/2013/089930A1
Mobile communication devices, having multiple speakers and/or microphones to perform a number of audio functions, for use with mobile devices, are provided. The microphones may be housed within the communication device housing. To compen...  
WO/2013/086476A1
A method, device and computer program product for processing audio signals, the method comprising: determining beamformer filter coefficients to be applied to the audio signals; applying the beamformer filter coefficients to the audio si...  
WO/2013/085605A1
Devices and methods are disclosed that allow for selective acoustic near-field nulls for microphone arrays. One embodiment may take the form of an electronic device including a speaker and a microphone array. The microphone array may inc...  
WO/2013/078002A1
A method includes receiving an ultrasound signal at an ultrasound receiver from an ultrasound transmitter. The method also includes detecting movement of at least one object based on the received ultrasound signal and at least one previo...  
WO/2013/077472A1
A wireless communication system includes a first wireless communication apparatus, a second wireless communication apparatus, and a third wireless communication apparatus which operates as a control station of controlling the first and s...  
WO/2013/066544A1
Method, device and computer program product for processing audio signals at the device, the device comprising audio output means for outputting audio signals. Audio signals are received at a plurality of microphones of the device. A char...  
WO/2013/053271A1
Disclosed is a call signal processing method for a mobile phone, comprising: detecting a current call status of a mobile phone; when the mobile phone enters an earphone call status, obtaining a first ambient noise signal; according to th...  
WO/2013/034034A1
Disclosed are a method, system and digital microphone for cancelling echo. The method includes: a terminal and a digital microphone establishing a bidirectional communication via an Ethernet physical chip, and the digital microphone acqu...  
WO/2012/044462A8
In one implementation, a conference hosted on a conference bridge that includes an echo control device that classifies the echo return loss of a plurality of endpoints. The endpoints may include endpoints on internet protocol (IP) networ...  
WO/2013/025346A1
Methods and apparatus are provided for acoustic echo cancellation in a speech signal. Acoustic echo is cancelled by inserting at least one tone in the speech signal, wherein the at least one tone is substantially inaudible to a listener;...  
WO/2012/161891A3
Methods and systems for processing multi-channel audio streams using one or more arrangements of single-channel components are provided. One single-channel component is arranged at a near-end channel of a signal transmission path for eve...  
WO/2013/007070A1
Disclosed are a method and device for suppressing residual echo, the method comprising: conducting self-adaptive filtering to M channels of transmitter signals to obtain M channels of self-adaptive filtered signals; processing the M-1 ch...  
WO/2013/001145A1
An apparatus for removing an echo(es) from audio content may include a processor and memory storing executable computer code causing the apparatus to at least perform operations including receiving combined audio content including voice ...  
WO/2012/167262A1
A speakerphone is disclosed that can automatically answer incoming telephone calls and automatically detect and disconnect from inactive telephone calls while remaining physically off-hook. The speakerphone can be connected to a conventi...  
WO/2012/166092A1
Provided is an acoustic echo control solution for mobile devices with performance comparable to acoustic echo cancellation, yet with lower complexity and maintained robustness to timing mismatches between far-end and near-end audio signa...  
WO/2012/161885A1
An input signal is processed through noise suppression (NS) and echo control (EC) via a multipath model that reduces noise pumping effects while maintaining EC performance. A copy of a "noisy" input signal is sent to an EC component befo...  
WO/2012/161891A2
Methods and systems for processing multi-channel audio streams using one or more arrangements of single-channel components are provided. One single-channel component is arranged at a near-end channel of a signal transmission path for eve...  
WO/2012/158165A1
A method and system for removing echo from super-wideband audio streams is disclosed. A splitting filter (600) receives input audio streams and splits the received audio streams into a first signal stream of, e.g., 0-8 kHz and a second s...  
WO/2012/158168A1
A method and system to compensate for a drift between a first signal (110) and a second signal (120) is disclosed. The system includes a drift estimator (600) and a resampler (602). The drift estimator (600) receives, as input, for a pre...  
WO/2012/158163A1
A method and system for non-linear post processing of an audio signal for acoustic echo cancellation is disclosed. The system includes a non-linear processor (NLP) (104) that receives, as input, at least two of the following signals: a f...  
WO/2012/158164A1
A method and system for limiting gain control adaptation to a near-end audio signal using echo cancellation information is disclosed. The system includes an echo canceller (100) and an automatic gain controller (AGC) (600). The echo canc...  
WO/2012/110614A4
A method of reducing noise in a signal received at a processing stage of an acoustic system, the method comprising, at the processing stage: identifying at least one frequency at which a system gain of the acoustic system is above an ave...  
WO/2012/088544A3
A method and system for establishing a communication session between a plurality of communication terminals in an intercom system is disclosed. One of the communication terminals is associated with a room, dwelling, residence, or buildin...  
WO/2012/139780A1
A wide band echo canceller (EC2) comprising: - means (SP1) for splitting a signal (TXi) transmitted from a near end terminal to a far end terminal, into a sub-sampled signal (TH) corresponding to a higher frequency sub-band of the signal...  
WO/2012/138794A1
A method for echo cancellation and noise suppression is disclosed. Linear echo cancellation (LEC) is performed for a primary microphone channel on an entire frequency band or in a range of frequencies where echo is audible. LEC is perfor...  
WO/2012/131570A1
There is provided a method of determining the distance and/or acoustic quality between a mobile device and a base unit, the method comprising receiving an acoustic signal by a microphone in one of said mobile device and base unit; determ...  
WO/2012/125230A1
Regardless of the presence of echo or uplink speech, a microphone signal is received at a small filter and this small filter is functionally and/or physically separate from an adaptive echo canceller filter. The signal is applied to the ...  
WO/2012/125231A1
An input signal from the input source is received. An attenuation of an echo canceller filter is calculated using at least the input signal. A spectral component of a frequency band of an echo suppressor is adjusted to perform enhanced s...  
WO/2012/124878A1
The invention is a video phone which unifies an analog interface for a door phone, a lobby phone, security office phone, external telephones, a sub-phone and video phones in other homes, and uses the video phone's MICOM to perform volume...  
WO/2012/119499A1
Provided are an echo cancellation method and apparatus, relating to the technical field of communications. The echo cancellation method includes: a local-end network element receives a message carrying the access type of an opposite-end ...  

Matches 201 - 250 out of 14,267