| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
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| 05/17/2005 | US6895094 Adaptive identification method and device, and adaptive echo canceller implementing such method |
| 05/12/2005 | WO2005002184A3 A method for enhancing the acoustic echo cancellation system using residual echo filter |
| 05/12/2005 | US20050100182 Hearing instrument having a wireless base unit |
| 05/11/2005 | CN1201553C Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information |
| 05/11/2005 | CN1201226C Computer comprising multiway acoustic output put input system |
| 05/10/2005 | US6891948 Echo canceller |
| 05/06/2005 | WO2005041543A1 Wireless headset for use in speech recognition environment |
| 05/05/2005 | US20050096006 Subscriber selectable alternative to audible ringback signals |
| 05/05/2005 | US20050094795 High quality audio conferencing with adaptive beamforming |
| 05/03/2005 | US6889066 Network echo suppression in mobile stations |
| 05/03/2005 | US6888934 Vehicle intercom system |
| 04/28/2005 | WO2005039234A2 Protective cover assembly |
| 04/28/2005 | WO2005002183A3 Statistical adaptive-filter controller |
| 04/28/2005 | WO2004066107A3 Method and apparatus for digital subscriber line access multiplexer stacking |
| 04/28/2005 | US20050090295 Communication headset with signal processing capability |
| 04/28/2005 | US20050089158 Hybrid circuit for broadband modems |
| 04/28/2005 | US20050089148 Systems and methods for echo cancellation with arbitrary playback sampling rates |
| 04/28/2005 | DE20220919U1 Data bus addressing method, especially for use with a house or building intercom system, has an addressing method with a two part address system comprises of a unit specific address and a sender index |
| 04/27/2005 | EP1526510A1 Systems and methods for echo cancellation with arbitrary playback sampling rates |
| 04/21/2005 | WO2005036922A1 Communication headset with signal processing capability |
| 04/21/2005 | WO2004093328A3 Bidirectional distributed amplifier |
| 04/21/2005 | WO2004045244A8 Adaptative noise canceling microphone system |
| 04/21/2005 | CA2542622A1 Communication headset with signal processing capability |
| 04/20/2005 | EP1523846A1 Echo canceller with model mismatch compensation |
| 04/20/2005 | CN1608351A Device and method for carrying out multichannel acoustic echo cancellation with a variable number of channels |
| 04/20/2005 | CN1607740A Modified affine projection algorithm for non-stationary signal |
| 04/14/2005 | WO2005034577A1 Bluetooth enabled hearing aid |
| 04/14/2005 | US20050077102 Protective acoustic cover assembly |
| 04/13/2005 | CN1606326A Security management method for mobile phone |
| 04/13/2005 | CN1197263C Methods and apparatus for providing echo suppression using frequency domain nonlinear processing |
| 04/12/2005 | US6879670 Collective housing intercom apparatus |
| 04/07/2005 | WO2005031707A1 Speech coding method applying echo cancellation by modifying the codebook |
| 04/07/2005 | WO2005031706A1 Transmission of speech coding parameters with echo cancellation |
| 04/06/2005 | EP1521241A1 Transmission of speech coding parameters with echo cancellation |
| 04/06/2005 | EP1521240A1 Speech coding method applying echo cancellation by modifying the codebook gain |
| 04/06/2005 | EP1520395A2 Stationary spectral power dependent audio enhancement system |
| 04/06/2005 | EP1391106A4 Audio conference platform with dynamic speech detection threshold |
| 04/06/2005 | CN1605186A Echo canceller having spectral echo tail estimator |
| 04/05/2005 | CA2268096C Distributed audio signal processing in a network experiencing transmission delay |
| 03/31/2005 | WO2005011234A3 Echo cancellation filter |
| 03/31/2005 | US20050070337 Wireless headset for use in speech recognition environment |
| 03/31/2005 | US20050069161 Bluetooth enabled hearing aid |
| 03/30/2005 | EP1518394A1 Echo processing devices for single-channel or multichannel communication systems |
| 03/30/2005 | EP1518393A1 Non stationary echo canceller |
| 03/30/2005 | EP0947057B1 Double talk and echo path change detection in a telephony system |
| 03/29/2005 | US6873704 Apparatus for removing echo from speech signals with variable rate |
| 03/24/2005 | US20050063536 Method for enhancing the Acoustic Echo cancellation system using residual echo filter |
| 03/24/2005 | US20050063534 Direct drive for a subscriber line differential ringing signal having a DC offset |
| 03/24/2005 | DE10340228A1 Audio system with bi-directional signal transfer between audio transmitters and receivers to permit checking of signal quality and changing of selected channel |
| 03/23/2005 | EP1517581A2 A method for optimal microphone array design under uniform acoustic coupling constraints |
| 03/17/2005 | US20050058279 Power supply signal from system side circuit to line side circuit in telecommunication device |
| 03/17/2005 | US20050058278 Method and System for Suppressing Echoes and Noises in Environments Under Variable Acoustic and Highly Fedback Conditions |
| 03/17/2005 | US20050058277 Controlling attenuation during echo suppression |
| 03/16/2005 | EP1391101B1 Telephone apparatus |
| 03/16/2005 | CN1595827A Digital adaptive filter and acoustic echo canceller using the same |
| 03/15/2005 | US6868158 Echo processing apparatus |
| 03/15/2005 | US6868157 Echo canceling method, echo canceller and voice switch |
| 03/10/2005 | WO2005022876A1 Measuring a talking quality of a communication link in a network |
| 03/10/2005 | WO2003092255A8 Audio bandwidth extending system and method |
| 03/10/2005 | US20050053230 VC-to-DTMF interfacing system and method |
| 03/10/2005 | US20050053229 Common mode noise cancellation |
| 03/10/2005 | US20050053227 Electronic circuit to reduce noise in digital subscriber loop and communications over unshielded twisted pair metallic conductors |
| 03/10/2005 | US20050053097 Multi-channel communication system for multiple input, multiple output processing of an encoded signal |
| 03/10/2005 | US20050053021 System and method to reduce echoes in voice communications |
| 03/10/2005 | US20050053020 Adaptive scaling and echo reduction |
| 03/09/2005 | CN1593055A Communication terminal with bandwidth expansion and echo compensation |
| 03/09/2005 | CN1192510C Method and apparatus for controlling echo on both sides of connection |
| 03/08/2005 | US6865270 Echo cancellation method and apparatus |
| 03/03/2005 | US20050047609 Device and method for carrying out multichannel acoustic echo cancellation with a variable number of channels |
| 03/02/2005 | EP1509756A1 Method in a digital network system for controlling the transmission of terminal equipment |
| 03/02/2005 | CN1588820A Plate card type echo eliminator |
| 03/01/2005 | US6862349 Method and apparatus for delivering secured telephony service in a hybrid coaxial cable network |
| 02/24/2005 | US20050041799 Method and system for classifying network connections |
| 02/24/2005 | US20050041798 Comfort noise generator |
| 02/23/2005 | CN1585445A Method for shielding forward frame in mobile communication system |
| 02/23/2005 | CN1585444A Method for filtering backward frame in mobile communication system |
| 02/23/2005 | CN1584977A Approaching end voice detection realizing method for echo inhibitor |
| 02/22/2005 | US6859531 Residual echo estimation for echo cancellation |
| 02/17/2005 | WO2004107588A3 Method and device for frequency translation in powerline communications |
| 02/17/2005 | US20050036586 System and method for verifying central office wiring associated with line sharing |
| 02/17/2005 | DE10323226B4 Verfahren zum Einrichten einer Hauskommunikationsanlage Method for establishing a House communication system |
| 02/16/2005 | CN1582562A Method and system for classifying network connections |
| 02/16/2005 | CN1581992A System and method for realizing encrypted communication in mobile communication system |
| 02/15/2005 | US6856685 Feed arrangement for a subscriber loop with multi-level current regulation capability |
| 02/10/2005 | US20050034168 Method and apparatus for delivering secured telephony service in a hybrid coaxial cable network |
| 02/10/2005 | US20050032501 Network device with hybrid-mode transmitter |
| 02/03/2005 | WO2005011274A1 Doorphone system and signal transmitting/receiving method, and doorphone master unit and slave unit |
| 02/03/2005 | WO2005011248A1 System for the digital processing of an acoustic or electrical signal, and telephone set provided with such a processing system |
| 02/03/2005 | WO2005011234A2 Echo cancellation filter |
| 02/03/2005 | WO2005011139A1 Electronic circuit to reduce noise in digital subscriber loop and communications over unshielded twisted pair metallic conductors |
| 02/03/2005 | DE202004015612U1 House communications system, especially for large residential/office buildings, has two house stations with associated identifiers for fulfilling associated communications tasks, door/third house station for house station user selection |
| 02/02/2005 | EP1502418A1 Full duplex echo cancelling circuit |
| 02/01/2005 | US6850783 Methods and apparatus for mitigating the effects of microphone overload in echo cancelation systems |
| 01/27/2005 | WO2005008916A1 Echo cancellation method and wireless repeater with echo canceller unit |
| 01/27/2005 | WO2005008910A1 Speech communication apparatus |
| 01/27/2005 | US20050020232 Data communication over power lines |
| 01/27/2005 | DE20221102U1 System for controlling access via a door has a door station, an electronic access control to trigger a door opener and a biometrics unit for analyzing a person's data prior to authorizing access |
| 01/26/2005 | EP1501332A2 A method to reduce acoustic coupling in audio conferencing systems |
| 01/26/2005 | EP1500254A1 Communications device for transmitting acoustic signals in a motor vehicle |
| 01/26/2005 | EP1186155B1 Loudspeaker volume range control |