To provide a method for combined use of a device enabling a user to easily learn accents, intonation and the like in learning and acquiring a foreign language such as English and a storage device wherein timing marks are provided in front of character notation of software and color changing telops synchronized with voice output are used for the character notation.

A user adjusts a retractable bellows part for size adjustment connecting an ear pad and a mouth pad of the own voice feedback device, and wears the device on the left side of the user's head. The device is used in combination with software wherein timing marks are provided in front of the character notation on the video screen of a game machine, a personal computer and the like, and color changing telops synchronized with the voice output are used for the character notation so that the change of colors is synchronized with the outputted model voice. The own voice feedback device in such configuration for transmitting user's own voice to one ear is used in combination with a storage device using the software wherein timing marks are provided in front of the character notation on a video screen and color changing telops synchronized with voice output are used for the character notation.