Limit (music)In just intonation the limit is the highest prime number, that may appear in the ratios used to create a specific just tuning.
For instance, in a 5 limit tuning only ratios using 2, 3, 5, and all of their respective multiples, would be used. However, intervals are usually referred to within one octave, so that 10/2 is usually called 5/2.
Some people can tune an amazing number of intervals in just intonation by ear alone. Such an example of a person who exhibited this ability was the late composer Lou Harrison, who could tune up to 7 limit.