Watch Free Online on Hurawatch. We are surrounded by all kinds of sounds, but how far are we conscious about them? The director and investigator Raquel Castro has been working with the concept of sound landscape. And in particular the way sounds, silences, noises, frequencies and all spectral densities - infra or ultrasounds - can shape each place and all of us. This is also a film essay about citizenship, ecology, and the responsibility we have for the sounds we produce.