dtmf_row 76 src/libteletone_detect.c static float dtmf_row[] = {697.0f, 770.0f, 852.0f, 941.0f}; dtmf_row 113 src/libteletone_detect.c theta = (float)(M_TWO_PI*(dtmf_row[i]/(float)sample_rate)); dtmf_row 119 src/libteletone_detect.c theta = (float)(M_TWO_PI*(dtmf_row[i]*2.0/(float)sample_rate));