Attemp to do filtering

FM.cpp

@@ -85,6 +85,9 @@ void CFM::samples(bool cos, q15_t* samples, uint8_t length)
     if (!m_callsign.isRunning() && !m_rfAck.isRunning())
       currentSample += m_timeoutTone.getAudio();
 
+    //ToDo Filtering
+    //::arm_fir_fast_q15(&m_filter, samples + i, &currentSample, 1);
+
     currentSample += m_ctcssTX.getAudio();
 
     samples[i] = currentSample;