By using multiple limits steps in a sequence, SoundCheck can sort products on a production line. In the example sequence "Product Sorting" (link below), the 1 kHz sensitivity is extracted from the fundamental curve and the result passed through two limit steps. The first limit has a width of 6 dB and is used to judge whether the unit passes or fails. If the unit passes it is tested against the second limit, which only has a width of 3 dB. Passing this second limit places the unit in Group A, whereas failing it places the unit in Group B. Depending on the result, one of three display steps is shown. A text window tells the user which group the unit falls into or whether it is a failure.
The sequence could be modified to include Digital I/O message steps that would route products to specific bins based upon which group they belong.