Modulate

mod′ū-lāt, v.t. to measure, to regulate: to vary the tone of voice so as to give expre ion: ( mus. ) to change the key or mode.— v.i. to pa from one key into another.— adj. Mod′ular , of or pertaining to mode or modulation, or to a module.— ns. Modulā′tion , the act of modulating: state of being modulated: ( mus. ) the changing of the keynote and of the original scale by the introduction of a new sharp or flat; Mod′ulātor , one who, or that which, modulates: a chart in the Tonic Sol-fa musical notation on which the modulations or changes from one scale to another are shown by the relative position of the notes; Mod′ule , a small measure or quantity: ( arch it. ) a measure such as the diameter of the shaft for regulating the proportions of the other parts of columns: ( Shak. ) a model, image; Mod′ulus ( math. ), a constant multiplier in a function of a variable, by which the function is adapted to a particular base:— pl. Moduli (mod′ū-lī). [L. modulāri , -ātus — modulus , dim. of modus , a measure.]