The invention provides a rubber composition for golf balls which includes a base rubber, a metal salt of an unsaturated carboxylic acid andor an unsaturated carboxylic acid and zinc oxide, an organic peroxide, and from 0. A one-peace barrette appears on the hair as if it is three or four individual bead. When a compressive force is applied to the hanger, it shrinks longitudinally and as a result the slip is cammed radially to the extent the inside diameter of the surrounding tubing permits. The mask generation module generates a Noise Visibility Function mask using NVF masking means, an adaptive dithering mask using adaptive dithering masking means, and a contour mask using contour masking means. Learning values of the correction amount are calculated corresponding, respectively, to partial-cylinder operation and all-cylinder operation, and one of the calculated learning values is used according to the operating condition of the engine. Every time the nozzle completes a single revolution around the winding core, a twist occurring in the wire rods is undone by having the index mechanism cause the core to perform a single revolution about a central axis thereof and having the nozzle moving mechanism cause the nozzle to follow the winding core as the core performs the single revolution.