The quality of the acoustic environment in offices is crucial for the wellbeing of each and every employee which, in turn, influences the success of the organisation. Flexible workplaces and open-plan offices or combinations thereof seem to be the future. Such a solution involves an office environment in which specific demands are to be placed on acoustics. In this kind of office environment, acoustics greatly influence the office worker's psychological and physical well being. People are easily distracted by voices and background noises. They affect our power of concentration and thus our attention to the task we are expected to perform.