Patent ID: 7917356

Claim:
A method for operating a VAD/SS system which is connected to a channel of a transmission pipe, the channel providing a pathway for the transmission of communication energy, said method comprising: detecting, by a processor, the communication energy on the channel; suppressing activation of the VAD/SS system in response to communication energy being detected on the channel; determining the presence of audible energy on the channel in response to communication energy not being detected on the channel; calculating peak/average energy ratio for the whole spectrum defining peak/average energy results; calculating the sum of squares of every differential between adjacent sub-bands defining sum results; comparing said peak/average result to said sum result to define a constancy threshold; determining whether the audible energy is constant or dynamic in response to audible energy being detected on the channel by the constancy threshold; activating the VAD/SS system in response to the audible energy being constant such that a matching noise from the VAD/SS system is added to the channel; re-routing of communication energy increasing the number of channels of said transmission pipe, and suppressing activation of the VAD/SS system in response to the audible energy being dynamic such that addition of the matching noise from the VAD/SS system to the channel is suppressed and looping back to the detecting step.