Patent ID: 8089992

Claim:
A method to measure de-jitter buffer performance, comprising: transmitting a known audio signal via a plurality of packets over a packet-based network; recording a received signal based on the known audio signal; analyzing the recorded signal to determine one or more of a lower de-jitter buffer size, an upper de-jitter buffer size, a de-jitter buffer expansion speed, or a de-jitter buffer contraction speed based on the recorded signal and the known signal; comparing the one or more of the lower de-jitter buffer size, the upper de-jitter buffer size, the expansion speed, or the contraction speed to a performance requirement; and correcting communication network performance based on the comparison, wherein determining the lower de-jitter buffer size comprises: adding a known delay to at least one packet of the plurality of packets; determining a length of a gap in the recorded signal; and determining the lower de-jitter buffer size based on the length of the gap and the known delay.