170 Hz is a Dutch film about the love of two deaf children. Although some dialogues are in Dutch, most of it is in Dutch Sign Language[2] and subtitled. The film was first presented on the Dutch Film Festival in September 2011, and was released theatrically on 1 March 2012.
The title refers to the frequency of 170 Hertz, the highest frequency which still can be heard by main character Nick (e.g. the sound of a motor bike).