Sound map calculator

Do not operate the form until this page and its programme have loaded completely, and the picture has appeared in the frame.

Click in grid to insert or remove turbines. Point with mouse to read sound level in dB(A) in your browser's status line. Source sound level for next turbine is set to dB(A), Grid unit size is set to m. (It is convenient to use the rotor diameter as your grid size when placing turbines). Maximum permissible sound level at houses is set to dB(A). This grid has grid points each way. You may use a grid with up to 32 points if you have a fast computer with enough memory allocated for Netscape. If you change a number, press the tab key, click CALCULATE, or click outside the field you just entered to start calculations and plot. Click CLEAR to delete the turbines and reset to default data.

To print the results of the Sound Map Calculator you should make a screen dump