Voice activity detection - PowerPoint PPT Presentation

An Introduction to Voice over IP

An Introduction to Voice over IP. Lance Parr Lead Systems Administrator VoIP Laboratory Manager Texas A&amp;M University College Station, Texas. What is VoIP?.

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1.21k views • 66 slides

Introduction to Telecommunications

Introduction to Telecommunications. Lecture 1 Paul Flynn. switches. trunks. lines. station equipment (e.g. telephone sets, MODEMs, FAX machines, …). transmission equipment (e.g. repeaters, multiplexers, DCS). network signaling and control (e.g. SS7 and IN). SS7 &amp; IN. switch. switch.

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501 views • 44 slides

Introduction to Telecommunications

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1.01k views • 44 slides

CDMA

CDMA. Session 8 Nilesh Jha. IS95 CDMA. 1.25 MHz. up to 64 channels (is the number of orthogonal codes) code: 1.2288 Mchips/sec. Voice coder: 9.6 kb/s (really 8.55 kbps plus overhead) Cell power controlled at base stations to minimize interference (and near far problem).

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697 views • 37 slides

Noise Reduction

Noise Reduction. Two Stage Mel-Warped Weiner Filter Approach. Intellectual Property. Advanced front-end feature extraction algorithm ETSI ES 202 050 V1.1.3 (2003-11) European Telecommunications Standards Institute

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517 views • 32 slides

HIWIRE MEETING Granada, June 9-10, 2005

GSTC UGR. HIWIRE MEETING Granada, June 9-10, 2005. JOSÉ C. SEGURA, LUZ GARCÍA JAVIER RAMÍREZ. Schedule. Non-linear feature normalization ECDF segmental implementation Progressive equalization 2-class normalization Non-linear speaker adaptation/independence

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443 views • 32 slides

Wireless Data Communication Networks Lecture 20: Introduction to GSM

Wireless Data Communication Networks Lecture 20: Introduction to GSM. Outline. GSM logical channels Radio resource management. GSM Logical Channels. Logical channels – provide services to upper layers of the protocol stack They belong to different layers (1-3) of the OSI model.

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Doc v5.0

Doc v5.0. 2012-06-29. ES) Product Planning Team . iPECS Communicator . Market Trend s. Increasing mobility in smart work environment. Increasing Mobile Office. A Mobile Society. Evolving to Smart Work. Work anytime, anywhere, &amp; from any device

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Evaluation of VoIP application

Evaluation of VoIP application. Summary of previous 802.20 contributions on VoIP models Review candidate vocoder characteristics Variable rate: EVRC Fixed rate: ITU-T G.729 B Markov models IP stack model Network effects model QoS metrics and performance Conclusion

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296 views • 16 slides

Performance Evaluation of the IEEE 802.16 MAC for QoS Support

Performance Evaluation of the IEEE 802.16 MAC for QoS Support. Aemen Hassaan Lodhi 05060021. Outline . IEEE 802.16 (WiMAX) MAC layer Project Objective Simulation Environment Performance Metrics Work accomplished Future strategy. IEEE 802.16 (WiMAX).

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414 views • 15 slides

Speech Enhancement Using Spectral Subtraction

Speech Enhancement Using Spectral Subtraction. Presentation by Sevakula Rahul Kumar (5464) under the guidance of Dr. Kishore Kumar. GOALS. Study of Speech Enhancement using Spectral Subtractions .

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535 views • 13 slides

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