Avaya Inc.

Mei-Sing Ong

Luke Anthony Tucker

Alexander Martin Scholte

Lee D Gibbons

The present invention is directed to a voice activity detector that uses the periodicity of amplitude peaks and valleys to identify signals of substantially fixed power or having periodicity.

Efficient voice activity detector to detect fixed power signals

Clock correlation can be achieved, for example, utilizing the RTP stream between a sender and receiver by determining a baseline at the start of, for example, a communication. This baseline is derived as a point in time from an arriving packet and represents a point from which subsequent packets deviate. Using this baseline, an early packet or a late packet can be detected. An early packet pushes the baseline down to that earlier point, while late arriving packets, if they are arriving late for a continuous period of time, represents a shift in the opposite direction from the baseline, resulting in a baseline moving to the 'earliest' packet out of the sequence of the late arriving packets.

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Forestville, Australia

Mei-Sing Ong