Importance

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Abstract

A map drawing apparatus has a map information reading section, a level extracting section, and a map information processing section. The map information reading section reads map information. The level extracting section extracts a level of a spectrum over a predetermined frequency range from a signal of input sound. The map information processing section processes the form (height, color, shape) of an object (a building, a cloud in the background, or the like) contained in the map information read by the map information reading section, into map information dynamically changed in cooperation with the spectrum extracted by the level extracting section. The map information processing section converts the processed map information into an image signal that can be displayed on a display device.

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First Claim