Dark blue towns are generally considered to be part of Western Massachusetts. Fewer consider the light blue towns part of Western Massachusetts; they are, in the north, all in Worcester County (Royalston, Athol and Petersham), and in the south, all in Hampden County (Brimfield, Holland and Wales). Taken and adapted from the Metrowest image which i...
used in sound synthesis to modulate a sound attribute such as volume at an audibly slow rate. (LFO)