| Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105) |
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| 07/30/2013 | US8499020 Method and system for estimating and applying a step size value for LMS echo cancellers |
| 07/30/2013 | US8498423 Device for and a method of processing audio signals |
| 07/30/2013 | US8498408 Crosstalk estimation and power setting based on interpolation in a multi-channel communication system |
| 07/30/2013 | US8498407 Systems and methods for double-talk detection in acoustically harsh environments |
| 07/30/2013 | US8498406 Integrated keypad system |
| 07/25/2013 | US20130191873 System and method for processing audio signals received by a communication device |
| 07/25/2013 | DE102012100564A1 Display unit for door station of door intercommunication system, has control element to mark participant or participant group of selection list such that highlighted entry in list is highlighted with respect to other participants |
| 07/25/2013 | DE102012100562A1 Individual module for door or home communications system, is engaged and disengaged in adapter housing, where distance frame spacer is mounted on rear side for installing module into aperture of plane front plate |
| 07/25/2013 | DE102012025579A1 Display unit for door station of door intercommunication system mounted in home, has electronic unit that generates coded signal for initiating call signal on bus terminal |
| 07/25/2013 | DE102010014471B9 Hauskommunikations-Gateway House communications gateway |
| 07/24/2013 | CN103220440A Noise suppressing device, noise suppressing method, and program |
| 07/23/2013 | US8494153 Adaptive mute status reminder |
| 07/18/2013 | US20130184036 Echo Canceler Circuit and Method |
| 07/18/2013 | DE102012103201B3 Verfahren zur Signalisierung von Zuständen und/oder Ereignissen von Hausgeräten mittels eines Türkommunikationssystems Method for signaling of states and / or events of home appliances by means of a door communication system |
| 07/17/2013 | CN103209270A Mainframe of medical communication calling device |
| 07/16/2013 | US8489151 Integrated and detachable wireless headset element for cellular/mobile/portable phones and audio playback devices |
| 07/16/2013 | US8488778 Electronic device with hinge mechanism |
| 07/16/2013 | US8488777 Microphone coupler system for a communication device |
| 07/16/2013 | US8488776 Echo suppressing method and apparatus |
| 07/16/2013 | US8488745 Endpoint echo detection |
| 07/11/2013 | WO2013103770A1 Earbuds and earphones for personal sound system |
| 07/10/2013 | CN103200385A Compensating for different audio clocks between devices using ultrasonic beacon |
| 07/09/2013 | US8483776 Acoustic path for a wireless communications device |
| 07/09/2013 | US8483406 System for detecting and reducing noise via a microphone array |
| 07/09/2013 | US8483398 Methods and systems for reducing acoustic echoes in multichannel communication systems by reducing the dimensionality of the space of impulse responses |
| 07/03/2013 | CN101917527B Method and device of echo elimination |
| 07/03/2013 | CN101888455B Self-adaptive echo counteracting method for frequency domain |
| 07/02/2013 | US8477931 Case for electronic device with surface for attaching building elements |
| 07/02/2013 | US8477930 Case assembly for electronic appliance |
| 07/02/2013 | US8477929 Method, device and system for line management |
| 07/02/2013 | US8477928 Crosstalk reducing conductor and contact configuration in a communication system |
| 06/27/2013 | US20130163748 System for reducing speakerphone echo |
| 06/26/2013 | CN103179296A Echo canceller and echo cancellation method |
| 06/26/2013 | CN103179295A Mobile terminal capable of removing echo and echo removing method thereof |
| 06/26/2013 | CN103177729A Method and terminal for sending, receiving and processing voice on basis of long term evolution (LTE) |
| 06/25/2013 | US8472617 Interaction between echo canceller and packet voice processing |
| 06/25/2013 | US8472616 Self calibration of envelope-based acoustic echo cancellation |
| 06/25/2013 | US8472614 Attenuation and termination circuit using impedance synthesis |
| 06/20/2013 | WO2013089931A1 Optimizing audio processing functions by dynamically compensating for variable distances between speaker(s) and microphone(s) in an accessory device |
| 06/20/2013 | WO2013089930A1 Optimizing audio processing functions by dynamically compensating for variable distances between speaker(s) and microphone(s) in a mobile device |
| 06/20/2013 | WO2013049741A3 Processing audio signals |
| 06/20/2013 | US20130155924 Coded-domain echo control |
| 06/20/2013 | DE102011089225A1 Türsprechanlage und Verfahren zum Betrieb einer Türsprechanlage Door entry system and method for operating a door intercom |
| 06/19/2013 | CN103167197A Method and terminal with functions of shared voice frequency noise reduction and echo cancellation |
| 06/19/2013 | CN103167196A Method and terminal for canceling communication echoes in packet-switched domain |
| 06/19/2013 | CN101273618B 反馈声音消除设备 Feedback sound elimination equipment |
| 06/18/2013 | US8467544 Filter coefficient setting device and echo prevention device |
| 06/18/2013 | US8467523 Method and device for cancelling interference between a signal carried by a carrier power line and a signal carried by a telephone line |
| 06/18/2013 | US8467521 Echo canceler circuit and method |
| 06/13/2013 | WO2013086476A1 Processing audio signals |
| 06/13/2013 | WO2013085605A1 Near-field null and beamforming |
| 06/13/2013 | US20130148801 Voice switching for voice communication on computers |
| 06/13/2013 | DE102011056373A1 Method for operating telecommunications adapter, such as peripheral device for intercom, of telecommunications system, involves preparing configuration data for commissioning telecommunications adapter by personal computer-software |
| 06/13/2013 | DE102011056372A1 Call and/or display module for door intercom system, has LCD with backlight and/or with illuminated control element for controlling brightness of lighting of operating element and/or brightness of backlighting of LCD |
| 06/12/2013 | CN202998254U Echo eliminating circuit for vehicle-mounted Bluetooth telephone hand-free driver |
| 06/12/2013 | CN202998253U Howling elimination system and hand-free phone |
| 06/12/2013 | CN202998239U Acousto-optic amplified phone |
| 06/12/2013 | CN103152500A Method for eliminating echo from multi-party call |
| 06/12/2013 | CN103152499A Echo canceler |
| 06/12/2013 | CN103152498A Echo canceler |
| 06/12/2013 | CN101895488B Method for calculating error signal in echo cancellation system in wireless communication |
| 06/11/2013 | USRE44286 Communication device with rotating housing |
| 06/11/2013 | US8463335 Battery cover assembly for portable electronic device |
| 06/11/2013 | US8463331 Deterministic characterization and reduction of acoustic echo |
| 06/11/2013 | US8462938 Power source circuit for use in digital subscriber line modem |
| 06/11/2013 | US8462937 Power supply with digital control loop |
| 06/11/2013 | US8462936 Adaptive delay compensation for acoustic echo cancellation |
| 06/05/2013 | CN103141076A Echo control optimization |
| 06/05/2013 | CN102340605B Method and device for cancelling echoes |
| 06/05/2013 | CN101778183B Method and device for suppressing residual echo |
| 06/04/2013 | USRE44260 Dual keypad phone |
| 06/04/2013 | US8457291 Universal target button |
| 05/30/2013 | WO2013078002A1 Acoustic echo cancellation based on ultrasound motion detection |
| 05/30/2013 | WO2013077472A1 Wireless communication apparatus, wireless communication system and wireless communication method |
| 05/29/2013 | DE102011055741A1 Communication apparatus for communication system i.e. door intercom system in building, has terminal circuitry formed such that communication apparatus fed with voltage at bell switch of chime in rest condition of chime |
| 05/28/2013 | US8452003 Power saving technique for telephony access networks |
| 05/28/2013 | US8452002 Methods, apparatus and articles of manufacture to cancel echo for communication paths having long bulk delays |
| 05/28/2013 | US8452001 Class A-B line driver for gigabit Ethernet |
| 05/28/2013 | DE202012012542U1 Türsprechanlage Door Phone |
| 05/23/2013 | US20130129078 Echo canceller |
| 05/22/2013 | CN202949477U System for sampling rate deviation correction of transmitting and receiving terminals |
| 05/22/2013 | CN103118205A Method and device for testing call performance of downlink receiving terminal in noisy environment |
| 05/21/2013 | US8447030 Dual mode communication device and method for managing voice communication |
| 05/21/2013 | US8446897 System and method for providing multimedia tone/announcement over wireless network |
| 05/21/2013 | CA2570547C System for conditioning echo response of loop start trunk line |
| 05/21/2013 | CA2559623C Termination block |
| 05/16/2013 | US20130121131 Systems and method for orthogonal frequency divisional multiplexing |
| 05/15/2013 | EP2592761A1 Method and apparatus for controlling echo suppression in network |
| 05/15/2013 | CN202940875U Fire fighting truck obstacle-free communication system |
| 05/15/2013 | CN103108090A Silencer |
| 05/14/2013 | US8442213 Method and apparatus for shared positive protection |
| 05/14/2013 | US8441515 Method and apparatus for minimizing acoustic echo in video conferencing |
| 05/10/2013 | WO2013066544A1 Processing audio signals |
| 05/08/2013 | DE102012103202B4 Verfahren zum Betreiben einer Videomailbox mit einem Türkommunikationssystem A method of operating a video mailbox with a door communication system |
| 05/08/2013 | DE102010014471B4 Hauskommunikations-Gateway House communications gateway |
| 05/08/2013 | CN101600029B System and method for reducing background noise |
| 05/07/2013 | US8437812 Headset with auxiliary input(s) for cell phone and/or other devices |
| 05/07/2013 | US8437468 Methods, systems and products for providing modem functions |
| 05/07/2013 | US8437467 Method and apparatus for non-disruptive telecommunication loop condition determination |
| 05/01/2013 | CN202918383U Wireless headset type awakening equipment |