PES packet header Optional PES header NICAM In order to provide mono "compatibility", the NICAM signal is transmitted on a subcarrier alongside the sound carrier. Source: Internet
One particular advantage of intercarrier sound is that when the front panel fine tuning knob is adjusted, the sound carrier frequency does not change with the tuning, but stays at the above-mentioned offset frequency. Source: Internet
So the FM sound carrier is then demodulated, amplified, and used to drive a loudspeaker. Source: Internet
The PAL-M system has a different sound carrier and a different colour subcarrier, and does not use 625 lines or 50 frames/second. Source: Internet
Extracting the sound At this point the IF signal consists of a video carrier signal at one frequency and the sound carrier at a fixed offset. Source: Internet
If non-linear distortion happens to the broadcast signal, the 3.579545 MHz color carrier may beat with the sound carrier to produce a dot pattern on the screen. Source: Internet