Citation de Floortje
The general rule is to use short, repeated notes to encourage activity and one single note to discourage it. Let's say you want your sof to come when you call. Perhaps so many of us see this as an exercise in "obedience" (translation: a test of our authority),many humans belt out the word "come" like a marine drill sergeant. If I tape-recorded the sound and analyzed it, it would look exactly like the sounds made around the world to stop animals. (...) Some of the dogs do indeed come, although some with with heads down and tails tucked, because you can eventually override biology with enough training. But why work so hard? Use a sound that inherently encourages your dog rather than discourages him and training will be more effective and, as important, fun.