Interactive user generated Telecoms logo that reacts to the sound of the consumers voice

Wolff Olins has created the new brand identity for Oi Telecoms in South America. The logotype is user generated and reacts to the sound of the customers voice. Totally interactive, totally dynamic.
http://www.designweek.co.uk/oi-wolff-olins-designs-telecoms-logo-which-reacts-to-the-human-voice/