Sabin 3.0 - Statistical Acoustics Based Investigator

Sabin is a powerful CAD tool for room acoustics engineers. Based on statistical calculations, it determines the acoustical parameters of a user defined room, such as the reverberation time T60, the sound pressure level, and the RASTI as a measure of speech intelligibility. These parameters are updated dynamically, while the user is changing simulated sound sources and absorbing materials. Sabin features an automated material search procedure resulting in the desired reverberation curve.

A room is defined by entering the empty volume, the environmental conditions and the types and areas of the surfaces present, like floor, wall and ceiling. A project may contain several rooms, each of which can be defined separately as described above.

The desired reverberation times may be entered for reference and as a target for the Autosearch function. The measured reverberation times can be used when unknown absorption materials are present in an existing room.

Absorption materials can be selected from a database, and applied to the surfaces. This can be done manually, or automatically through the Autosearch function, which is based on the actual and desired reverberation curves.

Sound sources are also selected from a database and placed in the room. Noise sources represent unwanted environmental sounds. Signal sources represent musical instruments, voices, loudspeakers, etcetera.

During the design process, the resulting reverberation and sound pressure level curves are shown continuously, thereby providing the designer with a highly convenient feedback.