Securisound provides a pleasant and natural sounding background environment and creates speech privacy which is ideal for interview rooms, libraries, board rooms and conference centres. Acoustical Design has used acoustically shaped sound with a broad frequency base and spectrum shaping facility in order to achieve this. In an office environment, Securisound blocks out the sound of office machinery such as photocopiers, while allowing more privacy in meetings.  

Securisound consists of a grid of balanced loud speakers which are concealed in a ceiling plenum. The sound can be modified using individual zone controllers to create diversity and flexibility. A level transition device adjusts the masking sound level depending on how many people are in a room at any one time.  Acoustical Design also offers a number of additional options such as CD, AM/FM tuner and public address facilities.