Originally Posted by leslie
I'm planning on purchasing the Panny 65" commercial plasma screen next year. After reading the Lumagen posts, it seems that the Radiance might be the best VP for this unit. My question relates to audio time lag due to visual processing in the VP. Currently, I pass the video and audio cable stream through my pre-pro Integra Research RDC ...
The RadianceXD, using the Gennum, will have approximately 1.25 fields of delay for video and film, when in genlock mode. This is about 20 mS in the US and 25mS in PAL countries. By comparison, current products using the SiI504 and other current products, such as DVDO, have between 55 and 80 mS in US and 70 and 100 in PAL countries, of video delay. The Silicon Optix is about 150 mS.
Most digital displays add one or two more fields of delay.
Generally, from feedback from many people I have talked to, most people do not notice a lip-sync error of 50 mS but do notice the lip-sync at 75 mS.
So, even without running audio through the RaidanceXD, and using a display with two fields additional delay (the most I have encountered driving at the displays native resolution as we do), the RadianceXD will not have visible lip-sync error. For all other processors mentioned, lip-sync can be noticed unless the audio is delayed to match (which can be done by a good quality receiver or amp).
The RadianceXD can do the processing. but will not be HDMI 1.3, so if you want the HDMI 1.3 audio, you can run the HDMI to the receiver first, then to the RaidanceXD.
Hope this answers your question.