CHIRP SIGNAL FILTERING FOR DIGITAL GATEWAY

Register WIPO Patent
Application Number US2021012350
Publication Number 2021/142018
Status In Force
Filing Date 2021-01-06
Publication Date 2021-07-15
Owner CUBIC CORPORATION (USA)
Inventor
  • Mansfield, Stephen, John
  • Nystrom, Neal, F.

Abstract

A system and method for filtering chirp noise as it passes through a Radio over Internet Protocol (RoIP) gateway in a communication network is disclosed. Radio signals often include a short burst of chirp noise. Incoming signals are buffered and any chirp noise is detected. A chirp filter performs the filtering operation to remove chirp signal while ensuring true audio is not clipped. Without audio clipping the integrity of the audio signals are preserved.

IPC Classes  ?

  • H04B 1/10 - Means associated with receiver for limiting or suppressing noise or interference
  • H04W 88/16 - Gateway arrangements
  • H04W 92/02 - Inter-networking arrangements
  • H04W 4/10 - Push-to-talk [PTT] or push-on-call services