| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
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| 03/29/2012 | US20120076287 Echo control optimization |
| 03/28/2012 | EP1639791B1 A method for enhancing the acoustic echo cancellation system using residual echo filter |
| 03/27/2012 | US8144863 Method and apparatus for echo cancellation |
| 03/27/2012 | US8144862 Method and apparatus for the detection and suppression of echo in packet based communication networks using frame energy estimation |
| 03/27/2012 | US8144852 Method and apparatus for spectral containment over telephone service lines |
| 03/22/2012 | WO2012006535A8 Method of indicating presence of transient noise in a call and apparatus thereof |
| 03/22/2012 | US20120069989 Personal speakerphone device |
| 03/22/2012 | DE102010054701A1 Intercom for mutual speakerphone between cab and structure of military vehicle, has hand-held devices that are arranged in cab and structure of vehicle, and are connected to direct current electrical signal line for communication |
| 03/21/2012 | EP2430825A1 Method for selecting one of two or more microphones for a speech-processing system such as a hands-free telephone device operating in a noisy environment |
| 03/21/2012 | EP2430770A1 Noise suppression in a full-duplex audio communication terminal |
| 03/21/2012 | CN102387273A Method and device for inhibiting residual echoes |
| 03/21/2012 | CN102387272A Restraining method for residual echo in echo cancellation system |
| 03/21/2012 | CN102387271A Communication device and noise eliminating method |
| 03/21/2012 | CN102387270A 通讯装置及其接收方法 Communication device and receiving method |
| 03/21/2012 | CN102387269A Method, device and system for cancelling echo out under single-talking state |
| 03/20/2012 | US8140055 Method for performing digital broadcasting service in a dual-hinge type mobile terminal |
| 03/20/2012 | US8140049 Power line communication methods and devices |
| 03/20/2012 | US8139762 Electronic device and acoustic playback method |
| 03/20/2012 | US8139760 Estimating delay of an echo path in a communication system |
| 03/15/2012 | US20120063591 Method and apparatus for controlling echo in the coded domain |
| 03/15/2012 | US20120063588 Method for correcting telephone signal degradation caused by the length of the analog line via the receiver |
| 03/14/2012 | CN102377454A Method and device for echo cancellation |
| 03/13/2012 | US8135157 Headset with adjustable boom |
| 03/13/2012 | US8135127 Method and apparatus for detecting and responding to events occurring on remote telephone |
| 03/13/2012 | CA2527681C Current sense circuit in a line powered network element |
| 03/08/2012 | WO2012029895A1 Intercommunication system |
| 03/08/2012 | US20120057694 Method of line-switching and connection for a connector with a combo port |
| 03/08/2012 | US20120057693 Joint Signal Processing Across A Plurality Of Line Termination Cards |
| 03/07/2012 | EP1658720B1 Ultra-wide band wireless/power-line communication system for delivering audio-video content |
| 03/06/2012 | US8130942 Antihelix-conforming ear-mount for personal audio-set |
| 03/06/2012 | US8130941 Echo canceler |
| 03/06/2012 | US8130940 Echo detection |
| 03/06/2012 | US8130939 Maintaining convergence of a receiver during changing conditions |
| 03/06/2012 | CA2527283C Power ramp-up in a line-powered network element system |
| 02/28/2012 | US8126161 Acoustic echo canceller system |
| 02/28/2012 | US8126138 Integrated speaker assembly for personal media device |
| 02/23/2012 | WO2012006535A4 Method of indicating presence of transient noise in a call and apparatus thereof |
| 02/22/2012 | EP2420050A1 Multichannel echo canceller |
| 02/22/2012 | EP2420049A1 Systems and methods for computer and voice conference audio transmission during conference call via pstn phone |
| 02/22/2012 | EP2420048A1 Systems and methods for computer and voice conference audio transmission during conference call via voip device |
| 02/21/2012 | US8121283 Tapered capacitive sensing structure |
| 02/21/2012 | US8121260 Method and apparatus for retraining of echo cancellation |
| 02/21/2012 | CA2545150C Method and apparatus for adaptive echo and noise control |
| 02/16/2012 | DE202011052288U1 Ruf- und Anzeige-Modul für eine Türsprechanlage Call and display module for a door intercom |
| 02/14/2012 | US8117076 Method and apparatus for simplified e-commerce shopping via home shopping terminals |
| 02/14/2012 | US8116813 System for product retrieval using a coded surface |
| 02/14/2012 | US8116448 Acoustic echo canceler |
| 02/08/2012 | CN102347785A Echo elimination method and device |
| 02/07/2012 | US8111824 Control circuit for controlling a DC supply voltage for a terminal |
| 02/07/2012 | US8111820 Audio conference platform with dynamic speech detection threshold |
| 02/07/2012 | CA2586500C Method for coordinating co-resident teleconferencing endpoints to avoid feedback |
| 02/01/2012 | CN102340606A Echo canceller |
| 02/01/2012 | CN102340605A Method and device for cancelling echoes |
| 02/01/2012 | CN102340564A Circuit board for low-noise mobile phone and method for reducing noise of mobile phone system |
| 02/01/2012 | CN102340330A Apparatus and method for noise elimination of connection port of DSL network filter |
| 01/31/2012 | US8107619 Method, system and apparatus for controlling a network interface device |
| 01/31/2012 | US8107617 Audio processor |
| 01/31/2012 | US8107616 Acoustic echo canceller |
| 01/31/2012 | DE202011108388U1 Kompakte Türkommuniktionseinheit Compact Türkommuniktionseinheit |
| 01/31/2012 | CA2509391C Fault characterization using information indicative of echo |
| 01/25/2012 | EP2186312B1 Acoustic echo cancellation based on noise environment |
| 01/25/2012 | CN1838704B Echo prevention circuit, digital signal processing circuit and filter factor setting method |
| 01/25/2012 | CN102333055A Method and equipment for suppressing radio frequency of co-frequency relay echo |
| 01/25/2012 | CN101136973B Talk deciding system |
| 01/24/2012 | US8103011 Signal detection using multiple detectors |
| 01/24/2012 | US8102995 Communication device and telephone communication method thereof |
| 01/19/2012 | WO2011110908A3 Information distribution system and interphone apparatus used therein |
| 01/19/2012 | WO2010130761A9 Noise suppression in a full-duplex audio communication terminal |
| 01/19/2012 | DE102011010466B3 Verfahren zum Einrichten eines aus mindestens einer Türstation und mindestens einer Wohnungsstation gebildeten Haus-Kommunikationssystems A method for establishing a formed from at least one door station and at least one home station house communication system |
| 01/18/2012 | EP2327156B1 Method for determining updated filter coefficients of an adaptive filter adapted by an lms algorithm with pre-whitening |
| 01/18/2012 | CN102325230A Processing method and system for eliminating echoes and digital microphone |
| 01/17/2012 | US8099145 Electronic device |
| 01/17/2012 | US8098814 Handheld electronic device with keyboard |
| 01/17/2012 | US8098813 Communication system |
| 01/17/2012 | US8098812 Method of controlling an adaptation of a filter |
| 01/12/2012 | WO2012006535A1 Method of indicating presence of transient noise in a call and apparatus thereof |
| 01/12/2012 | WO2012004043A1 Echo canceller |
| 01/12/2012 | WO2012003734A1 Method and apparatus for controlling echo suppression in network |
| 01/12/2012 | US20120008752 Multi-pass echo residue detection with speech application intelligence |
| 01/12/2012 | CA2804984A1 Method of indicating presence of transient noise in a call and apparatus thereof |
| 01/11/2012 | EP2405587A1 Echo canceller |
| 01/11/2012 | CN202111704U Digital intelligent testing apparatus of cofrequency forwarding system impulse response |
| 01/11/2012 | CN102318328A Delay estimator |
| 01/11/2012 | CN102316231A Echo cancellation method and device |
| 01/10/2012 | US8095132 Remote SIM card replacement and activation process |
| 01/10/2012 | US8094809 Frame-based level feedback calibration system for sample-based predictive clipping |
| 01/04/2012 | CN102307271A Network digital integrated talkback system and transmission method thereof |
| 01/03/2012 | US8090096 Tilting mechanism and electronic apparatus |
| 01/03/2012 | US8090095 Method and apparatus for power-mode control |
| 01/03/2012 | US8090094 Echo canceller |
| 01/03/2012 | US8090093 Echo canceller |
| 01/03/2012 | US8089901 Communicating in a network that includes a medium having varying transmission characteristics |
| 01/03/2012 | US8089853 Systems and method for orthogonal frequency divisional multiplexing |
| 12/28/2011 | CN102300014A 一种适用于有噪声环境下的声回声抵消系统双端说话检测方法 One for acoustic echo cancellation system noise environments Double Talk Detection |
| 12/27/2011 | US8086878 Methods and apparatus for provisioning phantom power to remote devices |
| 12/27/2011 | US8086741 Method and system for delayed allocation of resources |
| 12/27/2011 | US8086194 Communication apparatus |
| 12/27/2011 | US8085930 Communication system |
| 12/21/2011 | EP2396961A1 External ac-dc coupling for communication interfaces |
| 12/21/2011 | EP2396958A1 Controlling an adaptation of a behavior of an audio device to a current acoustic environmental condition |