Echo Canceller

A professional audio conferencing system offering TRUE stereo echo cancellation at an unbeatable market price. The INTERACT Pro platform is a complete audio system with unrivalled audio performance and application flexibility all with simplified configuration in mind. Directly connects to enterprise telephones, PC and HD video conferencing systems and emerging Unified Communications endpoints

Powerful echo cancelling in settings from small to large conference roomsThe PJP-EC200 is a remote conferencing echo canceller device for Web and video conference systems. When combined with a public address system (microphones, speakers, and a mixer), it can be used for a variety of demanding applications.

16-PORT ECHO CANCELLATION CARD (ECHO16) Provides echo cancellation for conference calls for up to 16 ports. Mounted on the KX-TDA0190 (OPB) card.

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Polycom's Vortex EF2210, a stand-alone system for individual sites, is typically installed in meeting rooms along with one or more microphones and an automatic microphone mixer. Because the EF2210 delivers robust acoustic echo and noise cancellation performance, it is often used instead of the video conferencing codec's microphone and acoustic echo canceller. It provides a single microphone or line level input, plus two auxiliary inputs (for external devices such as a VCR). If additional microphone or line inputs are required, the Polycom Vortex EF2241 or Vortex EF2280 models are recommended. The EF2210 features industry-leading acoustic echo cancellation technology, which prevents received audio from being retransmitted to its original location. Patented noise cancellation algorithms dramatically reduce ambient noise in the audio sent to other sites, without affecting speech quality. Automatic Gain Control (AGC) reacts only to valid speech patterns, bringing voices within desired levels.

Acoustic Echo Cancellation

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Enriched by our vast industrial experience in this domain, we are into presenting an excellent quality range of Acoustic Echo Cancellation to our beloved clients. Features: High in demandSuperior qualityReasonable price

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Valiant offers a wide range of echo cancellation and voice quality enhancement (VQE) solutions for the following network situations: Wireline, International Gateway, Wireless, Satellite and IP Gateways Long distance telephony, GSM, CDMA, TDMA, VoIP, satellite and radio communication applications

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Echo Canceller

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CANSIL-BEND CANSILL

MS CERT shall cancel certification, withdraw the certificate and cancel any agreement for the use of MS CERT certification mark in the following cases: (a) under the relevant provisions of Suspension (b) at the formal request of a client; (c) if the certification Criteria are changed and the MS CERT cannot ensure conformity with the new requirements; (e) if the client ceases to operate their certified system; (f) if the client fails to meet financial obligations to MS CERT; or (g) on any other grounds specifically provided for under the certification criteria or formally agreed between the client and MS CERT. If a certificate is withdrawn, the MS CERT Register shall also be amended accordingly and MS CERT may also publish notification on that groundincluding MSCERT s website. A client may appeal to the MS CERT against a decision to withdraw certification

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Options/USPs Programmable audio setup customized for each setup Broad control of audio components viz. combiners, matrixes, equalizers, filters, crossovers, dynamics, routers, delays, remote controls, meters, generators, diagnostics, etc. Digital Automatic mixer with mix-minus facility Digital Echo canceller (programmable) with acoustic gain An essential component in Video Conference setups

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Ittiam Echo Canceller implements line echo cancellation algorithm conforming to ITU-T G.168-2000 specifications. It can be configured to cancel echo tails of lengths 16ms to 128 ms. The Echo canceller implements the following components Adaptive Filter for estimating the echo Double talk detector for disabling the filter adaptation during the periods of double-talk Non Linear Processor for suppressing the residual echo 2100 Hz tone detector to disable the echo cancellation Technical Specification Conformance to ITU-T G.168-2000 specification Multi-channel, Reentrant implementation C callable API for initialization and echo cancellation Echo Tail length Configurable from 16 to 128 ms Rapid Convergence Low residual echo Robust double talk detection, without divergence or clipping Robust performance against Narrowband signals and background noise Fast convergence on echo path changes (during call forwarding) Applications Conventional Telephone networks Voice Over IP or Voice Over ATM Voice communication with Satellite / Wireless networks.

Underwater Acoustic Signal Processing

LEC cancels the electrical echo produced by 2/4 wire hybrid interface impedance mismatches in telephony circuits. Encore s LEC is G.168 compatible and supports tail lengths upto 128ms. Currently Encore s LEC is available on TI s TMS320C64x, TMS320C62x, TMS320C54x, ColdFire (MCF52xx, MCF53xx, MCF522xx), PowerPC, ARM platforms.

The echo cancellation systems are NLMS based high performance systems meant for hands free and speakerphone systems and PSTN terminated telephony. The AEC contains proprietary very low PF-PM Double Talk Detect algorithm. The Voice Activity Detection algorithms are also proprietary high performance algorithms. A master state machine controls the overall system.Specification: ITU-T G.16732 to 128ms Echo path30db ERLE without NLP50db ERLE with NLP18 db/sec convergence LECITU-T G.165Upto 32ms Echo path 40db ERLE18 db/sec convergence AlgorithmsC C5000 Assembly, XDAIS compliantIntegration Support Available Platform [1]: TMS320C5000 DSPAll TI C54xx DSPs Performance: AEC: 6 to 20 MIPSLEC: Upto 7 MIPSAEC: PM 1KW DM 1 to 2.5KWLEC: PM 1KW DM 1 KW Applications: Hands Free TelephonyTelephony NetworksVoice-Controlled Systems Specifications:Echo Length:AECLEC 32 to 128msupto 32 msAt 8KHz sampling:256 to 1024 NLMS tapsUpto 256 NLMS tapsERLE:AECLEC 50db (with NLP) 40 db (with NLP) ERLE without NLP is 30db for bothConvergence18 db/sec