I believe you have to do it individually, but do check out the New Tool (3.0): dBatchProcess
It allows for batch processing of many useful functions for sample data.
the contrast function is especially great, like running a compressor with makeup gain on the audio data directly
Or, you could make a sequence of all the processed sounds in the pattern editor, select it, render selection as sample, and slice it back up
Or if you know how to code, I’m sure you could write a little script to run the process on each sample