Patent ID: 8144614
Filing Date: 2012-03-27
Classification: H04L

Abstract:
1. Method for detecting vocal data flow in a packet data flow said packet data flow being divided into packet blocks (w (k) ) each block (w) comprising a predefined number of packets, said data flow having at least two measurable variables (X, Y), said method comprising the steps of: a) providing, for each measurable variable (X, Y), at least one function (P {x|C), P{y|C}) representative of the distribution of the values of the respective variable (X, Y) in a vocal data flow; b) measuring, for each block (w c) providing a processor and, in the processor, applying, for each variable (X, Y), each measured value (x(k), y{k)) of the sequence of measured values of the variable to the respective distribution function (P {x|C), P{y|C}) in order to generate a sequence of likelihood values (B d) processing, by using the processor, for each variable (X, Y), the respective sequence of likelihood values (B e) processing by using the processor the average likelihood values (E[B f) comparing said reference likelihood value (B) with a threshold likelihood value (Bmin) in order to detect the presence of vocal data flow in the predefined number (K) of blocks of said packet data flow.