Methods for Speech SNR Estimation: Evaluation Tool and Analysis of VAD Dependency
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Date
2005-04
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
The dynamic range of broadband digital system is mostly limited by harmonics and spurious arising from ADC nonlinearity. The nonlinearity may be described in several ways. The distinction between static and dynamic contributions has strong theoretical motivations but it is difficult to independently measure these contributions. A more practical approach is based upon analysis of the complex spectrum, which is well defined, easily measured, and may be used to optimize the ADC working point and to somehow characterize both static and dynamic nonlinearity. To minimize harmonics and spurious components we need a sufficient level of input noise (dither), which destroys the periodicity at multistage pipelined ADC, combined with a careful analysis of the different sources of nonlinearity.
Description
Citation
Radioengineering. 2005, vol. 14, č. 1, s. 6-11. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2005/05_01_06_11.pdf
http://www.radioeng.cz/fulltexts/2005/05_01_06_11.pdf
Document type
Peer-reviewed
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Published version
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en