[LAU] Stereo ping-pong delay routing and haas effect

Hey hey, I'm currently working on a few delays in Csound. I have a simple mono in -> stereo out ping-pong delay, which was easy. Even after some research I am uncertain how exactly to route and delay a stereo input version of that. Some sources suggest having two delaylines of the same length, feeding one input each into one delay line and then feeding each delayline back into the other with the desired feedback amount. I have seen a slightly different version, where the left input goes into a kind of pre-delay and then into the left delayline, whereas the right input goes straight into the right delayline. Then the delaylines (without the pre-delay) are feed into each other. Is that second version, with a short pre-delay, causing a Haas effect? Or is that when the input and output channels are swapped, so the left input goes into the right delay and vice versa? Some help, a good or definitive article would be appreciated. Yes, definitive might be a strong term here. Let's say something like a majority vote. :) Best wishes and thanks, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c I'm so curious, what do you think of me <3 (Britney Spears)