Noises –especially those we can’t control– greatly affect both physical and mental health. Whether coming from the street, upstairs neighbors or the room next door, research suggests that these can raise stress, reduce productivity, interfere with communications and contribute to developing issues such as high blood pressure. Ultimately, sound quality defines user experience and (literally) sets the tone for the rest of the interior. The bad news is that most conventional building materials used today in modern architecture –concrete, glass, masonry– have extremely hard surfaces and limited acoustic properties, reverberating sound several times over and forcing users to raise their voices to be understood. Coupled with growing urban density and projects adopting a mixed-use layout, all of this results in increasingly noisy, uncomfortable and distracting living and working environments.