METHOD OF RECEIVING MULTICHANNEL R2MFC/DTMF COMBINATION IN USE DIGITAL SIGNAL PROCESSOR

摘要

The method effectively receives and detects both R2MFC and DTMF signal by using a digital signal processor (DSP). It is composed of the stages of: initializing all data in a digital signal processor (5); deciding the order of channel to be processed by the digital signal processor (5); converting the PCM data inputted to the digital signal processor (5) to linear data according to a memory look-up table; deciding wheather the function to be processed is R2MFC function or DTMF one; and repeating the stages from the 2nd stage.