17.10 Round-Robin Multisampling
The round-robin option can be used in conjunction with the probability setting to determine whether any given instance will produce a sound from any given note.
Kind: concept (user-guide-section) Chapter: 17 More Routing Examples Source: REAPER User Guide v7.70
The round-robin option can be used in conjunction with the probability setting to determine whether any given instance will produce a sound from any given note. For example, at 100% it will play every note. At 50% it will ignore every other note. Round robin makes the application of probability somewhat deterministic. If you have, for example, a 20% chance, round-robin will ensure a response exactly every 5th note. With round-robin disabled, each note is independently randomized. Consider an example where you use a separate track for each percussion instrument – kick, snare, etc. Shown here is a simple arrangement for the snare track, with two instances of ReaSampllOmatic5000, each containing a separate and subtly different snare sample. For both instances, round-robin and Remove played notes
from FX chain MIDI stream
have been enabled. For Snare 1 probability is set to 50%, for Snare2 100%. This ensures that during playback each of the two instances (and therefore two samples) will be used alternately, in rotation. If in this example you had three samples rather than two, probabilities would be set at 33% (1 in 3), 50% (1 in 2) and 100% (1 in 1) respectively. Four four samples, these settings would be 25% (1 in 4), 33% (1 in 3), 50% (1 in 2) and 100% (1 in 1), and so on.
More complex variations are possible. For example, a JS: MIDI/midi_choke plug-in is available which can be used in conjunction with ReaSamplOmatic5000 to help control whether any sound will be produced from a given note. An example showing how this can be used can be seen here:
http://forum.cockos.com/showpost.php?p=1278385&postcount=28