If this is foreign territory for you, we recommend you review this information several times in between exercises with your video system, or while previewing our demonstration videos. This is not an exhaustive technical guide — that information is best left for textbooks — here we attempt to simply present what you need to know in order to use a video synthesizer, and why you need to know it. We do presume a passing familiarity with synthesis concepts such as oscillators, and physics terms such as frequency and amplitude. We also presume you are familiar with some basic video concepts such as frame rate.
This article will remain a loose work in progress until designated otherwise. Please e-mail us with your questions and suggestions for improving this information.
< 29.97 Hz, NTSC
29.97 Hz, NTSC
29.97 Hz – 59.94 Hz, NTSC
59.94 Hz, NTSC
Y-axis range (or audio range)
59.94 Hz – 15.734 KHz, NTSC
X-axis range (or video range)
15.734 KHz – 6.75MHz (approx), NTSC
Composite video facts
NTSC timing is also known as 480i
PAL timing is also known as 576i
Component (YPrPb) or RGsB video signals can also be in 480i/576i timing.
NTSC/PAL typically refer to 480i/576i video which has embedded color subcarrier, as opposed to Component and RGsB, which have three signals to represent each color channel.
The i in 480i/576i refers to interlaced video, which means there are two fields in each frame. Video formats with p at the end (480p, 720p, etc) are progressive, non-interlaced signals, which means there is no practical difference between Field rate and Frame rate. The video signals patched around inside your video synthesizer represent only a portion of a complete video signal (the part with the actual image), which is why you need some form of output or encoder module in order to view any of these signals on a normal television monitor. With LZX Visionary, which deals with color channels instead of a composite signal we refer to these signals as “triple colorspace signals”. These signals have more in common with the Component and RGsB videoformats than they do with NTSC/PAL. Color Video Encoder takestriple signals and encodes them into a composite signal, and also performs other functions like clipping, blanking and sync insertion in order to make the output viewable on a display as NTSC/PAL video.