hat
rezilta yo soti nan LPFs yo kite la ak dwa yo nan vire aplike nan yon multiplex (mpo) blòk. Sa a se itilize nan efektivman pwodwi sòm (kite plis adwat) ak diferans (agòch - dwa) siyal ki fè yo Lè sa a, modulation sou yon konpayi asirans 38kHz. se Konpayi asirans la Lè sa a, siprime (oswa retire) bay yon doub-laterally siyal siprime konpayi asirans la. Li se lè sa a melanje nan yon blòk sentèz (+) avèk yon sònri 19kHz pilòt bay yon pwodiksyon siyal konpoze (ak kodaj stereo plen) nan peny 5.
eng
The outputs from the left and right LPFs are in turn applied to a multiplex (MPX) block. This is used to effectively produce sum (left plus right) and difference (left – right) signals which are then modulated onto a 38kHz carrier. The carrier is then suppressed (or removed) to provide a double-sideband suppressed carrier signal. It is then mixed in a summing (+) block with a 19kHz pilot tone to give a composite signal output (with full stereo encoding) at pin 5.