Meantone temperament A system of tuning which averages out pairs of ratios used for the same interval -LRB- such as NUMBER@1 and NUMBER@2 -RRB- , thus making it possible to tune keyboard instruments .

Meantone temperament , a system of tuning which averages out pairs of ratios used for the same interval -LRB- such as NUMBER@1 and NUMBER@2 -RRB- , thus making it possible to tune keyboard instruments .
