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The paper presents a first version of a wideband E-model applicable to planning future telephone networks in a listening-only context. It allows to predict wideband speech quality under bandwidth restrictions and wideband and narrowband speech coding with and without transmission errors, including the quality impact due to noise. The paper presents the different model components and discusses their...
In the past few years, objective quality assessment models have become increasingly used for assessing or monitoring speech and audio quality. By measuring perceived quality on an easily-understood subjective scale, such as listening quality (excellent, good, fair, poor, bad), these methods provide a quick and repeatable way to estimate customer experience. Typical applications include audio quality...
Analogue and digital in-plant telephone network signaling conditioning problem solutions are considered. In-plant telephone network conditioning requires converting between analogue and digital forms of voice representation and conditioning of signaling systems. Three different ways of TAU development are proposed and their advantages and disadvantages are analyzed. Special analogue-to-digital network...
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