Audio Crackling
Posted: Wed Dec 04, 2013 3:21 am
I recently converted a Brain Farm Digital Cinema Reel 2012 from Vimeo to a DCP using DVD O Matic and found sections of the audio had a distinct crackle which was not in the original mp4 download.
After checking the DVD and DCP O Matic websites I re-encoded the file with the Audio gain set to -12db. This has eliminated the crackle.
However the crackle does not appear to be created by our cinema system which is a Barco 10s projector, Dolby DDSS220 Server/IMB and 7.1 Dolby CP750.
Rather the original crackle was present in the DCP when it was played using dcpPlayer on a PC. The cinema system was merely reproducing the DCP audio.
Crackling audio therefore appears to be an artifact of the DCP conversion process rather than the cinema audio system!
Is this a valid interpretation of what is occurring!
After checking the DVD and DCP O Matic websites I re-encoded the file with the Audio gain set to -12db. This has eliminated the crackle.
However the crackle does not appear to be created by our cinema system which is a Barco 10s projector, Dolby DDSS220 Server/IMB and 7.1 Dolby CP750.
Rather the original crackle was present in the DCP when it was played using dcpPlayer on a PC. The cinema system was merely reproducing the DCP audio.
Crackling audio therefore appears to be an artifact of the DCP conversion process rather than the cinema audio system!
Is this a valid interpretation of what is occurring!