DTMF and CLIP decoding in a noisy area using adaptive approach

Abstract

Multi-frequency signals are greatly used in telecommunication fields. Signaling and speech are such an example of multi-frequency signals exchanging through the telecommunication networks. Extracting the frequencies embedded in these signals is very useful for a lot of operations: like filtering, decoding, compressing….We propose in this paper adaptive technique to process in real time multi-frequency signals and extracting the frequencies that they contain.

Keywords: DTMF, CLIP, Noise, Adaptive, Real Time