Extending the comb analogy, flanging yields a comb filter with regularly spaced teeth, whereas phasing results in a comb filter with irregularly spaced teeth.
12.
This is because sophisticated comb filters in receivers are more effective with NTSC's 4 field color phase cadence compared to PAL's 8 field cadence.
13.
Extending the comb analogy, flanging yields a comb filter with regularly spaced teeth, whereas phasing results in a comb filter with irregularly spaced teeth.
14.
This is because summing two or more paths with different delays creates a comb filter even when the individual paths have a flat frequency response.
15.
FM SECAM is a continuous spectrum, so unlike PAL and NTSC even a perfect digital comb filter could not entirely separate SECAM Colour and Luminance.
16.
This produces a swept'comb filter'effect : peaks and notches are produced in the resultant frequency spectrum, related to each other in a linear harmonic series.
17.
Dot crawl can be greatly reduced by using a good comb filter in the receiver to separate the encoded chrominance signal from the luminance signal.
18.
Comb filters are frequently used to improve the quality of a composite monitor, and devices using Faroudja decoders are frequently considered the pinnacle of composite displays.
19.
At first glance, this technique can be viewed as subtractive synthesis based on a feedback loop similar to that of a comb filter for z-transform analysis.
20.
After determining our needs he gives a short course in TV tubes which included such words as " black screens " and " digital comb filters ."
