An information providing system includes the following elements. The supplemental signals preferably have at least one characteristic which allows distinguishing one supplemental signal from another. A hole in the flexible wall allows the first features to pass to the ball exterior as the ball is turned inside-out. The transport block is then transmitted with the alternative transmission format and different number of physical resource blocks if the value indicates that the total transmission power is less. The operative-coupling of the displacement sensors amplifies relative phase information between their respective output signals, which results in improved directionality.