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DigitalVideoAndHDTVAlgorithmsAndInterfaces.pdf

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Passband insertion gain, dB<br />

Stopband insertion gain, dB<br />

Group delay, ns<br />

+0.050<br />

+0.025<br />

+0.010<br />

0<br />

-0.010<br />

-0.025<br />

-0.050<br />

-10<br />

-20<br />

-30<br />

-40<br />

-50<br />

-60<br />

+3<br />

+2<br />

+1<br />

0<br />

-1<br />

-2<br />

-3<br />

0 1<br />

5.75<br />

Frequency, MHz<br />

0<br />

Frequency, MHz<br />

5.5<br />

5.75<br />

12 dB<br />

6.75 8<br />

40 dB<br />

Figure 16.24 Rec. 601 filter templates are standardized for studio digital video systems in<br />

Rec. 601-5. The top template shows frequency response, detailing the passband (at the top) and<br />

the stopband (in the middle). The bottom template shows the group delay specification.<br />

164 DIGITAL VIDEO AND HDTV ALGORITHMS AND INTERFACES

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