The present invention relates to the decoding/playback part of received sound data packets in systems for transmission of sound over packet switched networks. According to the invention, the lengths of received signal frames are manipulated by performing time expansion or time compression of one or more signal frames at time varying intervals and with time varying lengths of the expansion or the compression, said intervals and said lengths being determined so as to maintain a continuous flow of signal samples to be played back.
This application is a Continuation of application Ser. No. 09/498,398 filed on Feb. 4, 2000, now U.S. Pat. No. 7,321,851 and for which priority is claimed under 35 U.S.C. .sctn. 120; and this application claims priority of Application No. 9904812-6 filed in Sweden on Dec. 28, 1999 under 35 U.S.C. .sctn. 119; the entire contents of all are hereby incorporated by reference.