I mean stereo correlation in the sense that the “stereo shift” algorithm on the H3000 and the “stereoshift” module in Vsig both sound like the splicing is synchronized between channels, which preserves a sense of stereo imaging for the effect. It gives a different sound from using independent shifters for each channel. If I use independent shifters and play around with the buffer lengths, there’s a point where they sound like they get out of sync with each other, which doesn’t happen with the stereo shift algorithm.