The film portrays the search by an 11-year old deaf and mute boy for an audio-cassette his mother recorded shortly before her death.
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Sound Barrier is a 2005 film by the Iranian director Amir Naderi. The screenplay was written by Abou Farman, Heather Murphy and Naderi himself and featured Louise Flory, Frank Glacken, Jeremy X Halpern, Charlie Wilson in the principal acting roles. The film is regarded as the last one of Naderi's New York period. It won prizes in film festivals in Rome and Turin.
