Difference between revisions of "Geopsy: Decimate amplitude"
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By clicking on Decimate amplitude, a pop-up window appears with the following options: | By clicking on Decimate amplitude, a pop-up window appears with the following options: | ||
| − | *''Absolute maximum number of steps'' is the number of amplitude bins that should be used for positive values. Ex: a value of 1 leads to three amplitude bins: -1, 0 and 1 (1-bit | + | *''Absolute maximum number of steps'' is the number of amplitude bins that should be used for positive values. Ex: a value of 1 leads to three amplitude bins: -1, 0 and 1 (1-bit signal). |
*''Amplitude reference'' allows to define the value of largest amplitude bin. It can be set to: | *''Amplitude reference'' allows to define the value of largest amplitude bin. It can be set to: | ||
**''Value'', i.e. a specified value, e.g. 1 Volt to simulate a 2V peak-to-peak digitization. | **''Value'', i.e. a specified value, e.g. 1 Volt to simulate a 2V peak-to-peak digitization. | ||
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''Decimate amplitude'' can be used to test the robustness of a signal processing to the quality of the recordings. It allows to simulate recordings done by low quality digitizers. | ''Decimate amplitude'' can be used to test the robustness of a signal processing to the quality of the recordings. It allows to simulate recordings done by low quality digitizers. | ||
''Decimate amplitude'' modifies the [[Geopsy: Temporary Signal|temporary signals]] in the active viewer. | ''Decimate amplitude'' modifies the [[Geopsy: Temporary Signal|temporary signals]] in the active viewer. | ||
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| + | [[Image:DecimateAmpEx.png|thumb|center|400px|Example of extremely decimated signal in amplitude: a 1-bit signal.]] | ||
Revision as of 16:47, 10 March 2010
Decimate amplitude, reached from the Waveform menu, lower the quality of signals in the active signal viewer.
By clicking on Decimate amplitude, a pop-up window appears with the following options:
- Absolute maximum number of steps is the number of amplitude bins that should be used for positive values. Ex: a value of 1 leads to three amplitude bins: -1, 0 and 1 (1-bit signal).
- Amplitude reference allows to define the value of largest amplitude bin. It can be set to:
- Value, i.e. a specified value, e.g. 1 Volt to simulate a 2V peak-to-peak digitization.
- Maximum to set it to the maximum value of the active signals.
Decimate amplitude can be used to test the robustness of a signal processing to the quality of the recordings. It allows to simulate recordings done by low quality digitizers. Decimate amplitude modifies the temporary signals in the active viewer.
