METHOD OF ESTIMATING NOISE LEVELS IN A COMMUNICATION SYSTEM
摘要
A method of estimating noise in data containing voice information and noise comprising the steps of receiving the data as a sequence of input values; transforming the data by applying a first non linear mapping to the input values wherein the derivative function of the mapping decreases in magnitude as the input values increase in magnitude smoothing the transformed data; and transforming the smoothed transformed data by applying a second non linear mapping that is opposite to the first non linear mapping, to determine an estimate of the noise in the inputted data.
申请公布号
WO2008102207(A2)
申请公布日期
2008.08.28
申请号
WO2007IB04498
申请日期
2007.12.20
申请人
SKYPE LIMITED;VOS, KOEN;SORENSEN, KARSTEN, VANDBORG;BERGENHEIM, JON
发明人
VOS, KOEN;SORENSEN, KARSTEN, VANDBORG;BERGENHEIM, JON