No, this is not something we brass hats do. Its something that most PS2 and PS3 engines can't do.
Did you ever notice that no matter how quickly you press and release the horn button on the remote or with RTC, there is a minimum length of time that the horn blows? So, for example, it is almost impossible to sound a crossing signal sound manually that actually sounds like a real version would sound. That is because the shortest toot can you can blow is about 1.5 to 2 seconds long.
Follow along on my web page and learn about how I edited the sound file for the 20-20484-1 GP38-2 Diesel Engine #2060 to give it a really short toot.