I already used DoM in the past for cinema ads with mixed LRC videos.
I do not have a multichannel audio setup for editing anymore and want to give the upmixers a chance for a upcoming 25 minutes short Iam working on. Source will be a stereo file. Documentary with a interviewee and music with immersive impressions.
I studied the audio processor options in the manual and wonder about best practice for the right choice here before I try it in cinema. Mid-side decode seems to be a safe decision without any unwanted surprises. But which Stereo to 5.1 up-mixer could be a good choice in this scenario to get even more out of the stereo signal?
Version A seems quite complicated.
It is highly dependant on the source material. Sometimes I create 5.1 upmixes and listen to the individual tracks/surround channels (audacity will open the 5.1 MXF file with the FFMPEG plugin). You get some idea that way.
For a traditional 'narration with music' piece, I would stick with the LCR upmixer.
thanks, the idea with audacity is great. I give it a try the next days. And what is your experience with your upmixed pieces? Do you fall back to LCR a lot and why? Would be very interesting for me.
I was hoping to get a bit more rumble with the sound track this way (5.1 upmix) because of the utilization of LFE channel. I am aware that the other speakers should be full range in general.
You won't get the necessary rumble into the LFE with DCP-o-matic's upmixers. It doesn't create sub-harmonics, as most commercial upmixers do.
In general, I don't use the upmixers. Basically, because for the work I dost mostly, they are not relevant. That said - our cinema processor offers a DTS Neo:6 upmixer - so whenever I want that function, I can activate it real time.
If you don't have a chance to hear your upmix in a real cinema auditorium, I would avoid upmixer A and B.
I did a test with LCR upmixer yesterday and opened it in audacity, noticed that everything was in C-channel und only music where also playing in L/R-channel. I think this it how it works when it is called mid-to-side processor and only music is a stereo source? Not sure right now but it looks like that stereo sound is gone after that and in L and R there’s the same (music) signal?
