Concept

Plain old telephone service

Related publications (10)

"Can you hear me now?"

This thesis deals with signal-based methods that predict how listeners perceive speech quality in telecommunications. Such tools, called objective quality measures, are of great interest in the telecommunications industry to evaluate how new or deployed sy ...

EPFL2016

Spatial Error Concealment in Ad-hoc Audio Conferencing Systems

Reza Parhizkar

In this work we consider an ad-hoc audio conferensing system based on VoIP services in which the participants connect to the conference using mobile communication devices with wireless connectivity. To overcome possible quality problems in the wireless lin ...

2009

Explanatory Variables for per Capita Stocks and Flows of Copper and Zinc

Claudia Rebeca Binder Signer

A number of potential explanatory variables for the stocks and flows of copper and zinc in contemporary technological societies are co-analyzed with the tools of exploratory data analysis. A one-year analysis (circa 1994) is performed for 50 countries that ...

Massachusetts Institute of Technology Press2008

An Enhanced Service Provider Communication Interface with Client Priorization

Milos Stanisavljevic, Slobodan Lukovic

With the increased dynamics of modern life, the efficiency and reliability of everyday services is emerging to be a fundamental concern. On the other hand, modern telecommunication technologies, like wireless Internet access, are penetrating all segments o ...

IEEE/WFM2008

Effect of intelligent antennas on radio system planning and on mitigation

Juliane Iten Chaves Simoes

Smart antennas have been recently applied to improve the capacity and the performance of second generation wireless mobile communication systems. In general, smart antennas reduce the effects of multipath fading and improve the signal-to-noise-plus-interfe ...

EPFL2008

Networks on Chips

Giovanni De Micheli

We are witnessing a growing interest in Networks on Chips (NoC) that is related to the evolution of integrated circuit technology and to the growing requirements in performance and portability of electronic systems. Current integrated circuits contain seve ...

Springer2008

Contribution to the development of the acquisition electronics for the LHCb experiment

Guido Haefeli

The LHCb experiment is one of the four large particle detectors currently under construction at the LHC accelerator at CERN. It is a forward single-arm spectrometer dedicated to precision measurements of CP violation and rare decays in the b quark sector. ...

EPFL2004

Delay aspects in Internet telephony

Catherine Boutremans

In this work, we address the transport of high quality voice over the Internet with a particular concern for delays. Transport of interactive audio over IP networks often suffers from packet loss and variations in the network delay (jitter). Forward Error ...

EPFL2003

VoicePhone: An Interactive Vocal Server for Telephone Numbers

VoicePhone is a dialogue system, designed to recognize telephone numbers over the public telephone network. This report describes the basics needed for this program, including theory on speech recognition, human-computer interaction and user friendly dialo ...

IDIAP and CSE, University of Groningen1996

Design and analysis techniques for dynamic current mirrors

Today's world of electronics becomes more and more digital and therefore CMOS becomes the dominant technology. A CMOS process compared to a bipolar process offers several advantages, mainly a low power consumption which is important for portable systems po ...

EPFL1990

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