SIDLAB is a new 1D sound propagation simulation software for complex duct networks. It is based on the two-port theory and compiles a long experience and knowledge of using similar codes for all types of duct acoustic applications in research, teaching and consulting. It is MATLAB based with possible access to the source code. Building the network is easy by simply dragging and dropping different elements. A number of useful network viewing tools are available: zoom, pan, and element alignment. Definition of active sources is possible and easy to implement. A number of the most common one- and two-port elements are included using the latest models that are available in the literature. The user also has the possibility to add his own standard models as user defined two-ports. Calculation time is typically a few seconds on a normal PC. Post-processing within SIDLAB is simple and straightforward, with the possibility to save the results in different formats. The user can choose from a number of standard output parameters: Transmission Loss, Noise Reduction, Insertion Loss, amplitude and phase of the acoustic pressure at each node, and the acoustic net power flow through a certain node.

SIDLAB is based on the idea of project files. When you start a new project, all variables and results are saved in a single (.sid) file which is compatible with MATLAB. This file can be opened later in MATLAB for any non-standard post processing. You can re-open this file in SIDLAB and you restore your working environment with all variables set, exactly as you saved it the last time.

There is a possibility to generate a log file which stores all input parameters and variables of the project in a text file for easy access. A (.bmp) picture of the network is also available in the project directory to be included in reports. You can easily manipulate plots the same way you are used to in MATLAB. You can easily export any plot to any other Windows application. You can compare the results of this project to any simulation or measurement result you have earlier.