Noise Filtering/Smoothing
3.Select the method to use based on the type of data you are examining, then enter the associated value displayed for the method you select:
Type of Data | Suggested | Description |
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Noisy, | Default | No associated value is displayed. Default |
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data | smoothing | smoothing is a |
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| (RSM) | that uses the Peak Resolution (specified in the |
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| Peak Detection Setup dialog box) to calculate |
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| (May affect | the optimum number of smoothing points to |
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| peak |
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| resolution.) |
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| NOTE: Default smoothing is not available for |
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| PSD data. |
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Noise | Specify a Correlation Factor of 0 to 1.0. |
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but the Noise | Filter (NF) | Settings from 0.5 to 0.7 yield acceptable |
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Removal method |
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| results for most data. A setting close to 1.0 |
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may yield better |
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(May affect | yields a higher degree of noise reduction. |
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results |
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peak | If applying the Noise Filter with a certain |
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| resolution.) | Correlation Factor does not yield the |
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| necessary noise removal, return to the original |
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| trace (see “Returning to the original spectrum” |
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| with a higher Correlation Factor setting. |
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| Applying the Noise Filter more than one time |
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| with the same Correlation Factor setting does |
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| not improve noise removal. |
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Noisy, | Gaussian | Specify a Filter Width in data points (odd |
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data, chromatogram | Smooth | integers only). The maximum number of |
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data, or Voyager | (SM) | smoothing points is 2001. Points less than 1 |
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PSD data |
| Filter Width from the edge of the spectrum are |
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| (May affect | not smoothed. |
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| peak |
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| resolution.) |
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Data Explorer™ Software User’s Guide |