Patent ID: 7099281
Filing Date: 2006-08-29
Classification: H04L

Abstract:
1. A method for determining subjective quality of a packetized media data stream having packets of encoded data, each of said packets having a header portion and a data portion each having content, comprising the following steps: copying a portion of said packetized media data stream to obtain copied packets; replacing the content of the data portion of said copied packets with a packetized known test signal, said copied packets thereby comprising a pseudo-media stream; determining subjective quality of said pseudo-media stream; and using said subjective quality of said pseudo-media stream, to determine subjective quality of said packetized data stream wherein each packet copied from said packetized data stream is time stamped and said time stamping is used to control the temporal relationship between said copied portion of said packetized media data stream and said pseudo-media stream.