"Ka-ons" use flowers instead of cone-shaped paper boards as oscillation boards of speakers. The device is arranged in the following manner: the magnet and coil of the oscilatting part are contained in an acrylic tube, which in turn vibrates when the oscillation section does. Flowers touching this tube will also vibrate. Since sound is emitted from the petals and leaves, the setup functions as a directionless speaker.
Lets Corporation has explained this technology by saying "we have added the fifth and final sense, 'sound,' to the four senses already expressed by flowers - 'color (sight),' 'scent (smell),' 'honey (taste),' and 'feeling (touch).' By using all five of these, we have raised the the healing effects." The company has said it plans sale of 36,000 sets in a year.
Source: Tech Japan
