Our local church just got a new SoundCraft Si Compact 32 mixer. We really want to record a CD, but the vocalists are demanding autotune. Is it possible to get autotune to work with this mixer, or do I have to record the vocals separately, and add autotune on a DAW on the computer? If it is possible to record all 32 channels of the mixer directly to the computer, then that would be the best.
While there are some autotune devices that will autotune live, they are much more expensive than a DAW on a computer running autotune on the recording.
The mixer is pretty much irrelevant, however if you are wanting to autotune live, you will need as many autotunes as channels you wish to autotune - could be expensive. With a DAW, you can just run it for each channel asynchronously as you need.
Alternatively - get them to sing in tune.
It would be cheaper and give a better result (and take more time) if you auto tune in the computer later. Doing this would require that your mixer has direct outs on each channel and your computers interface has 32 inputs.
This would require a bit of an investment in hardware, but would still be cheaper then 32 rackmount autotune devices. If you want, I'll help explain what setting that up would take.