Chapter 5 Examining Spectrum Data

5.7 Noise Filtering/Smoothing

Description

Procedure

5

The Noise Filter/Smooth function includes four options for reducing noise in a spectrum trace:

•Default smoothing

•Noise-filtering

•Smoothing by the Gaussian method

•Noise removal

To noise-filter or smooth the display:

1.Select Duplicate Active Trace from the Display menu to keep the original data displayed after processing.

2.From the Process menu, select Noise Filter/Smooth.

The Noise Filter/Smooth dialog box (Figure 5-13)is displayed.

Figure 5-13 Noise Filter/Smooth Dialog Box

NOTE: The smoothing/filtering method selected in this dialog box is the method performed when you click in the toolbar.

5-42 Applied Biosystems