Spectral Shaping
Spectral shaping applies amplitude scaling in the frequency domain according to the specified frequency/gain pairs. The scaling function is linearly interpolated between neighbouring points.
Choose frequency/gain pairs to achieve the desired spectral output. Spectra and output volumes are updated on the fly.
The Spectra Analysis window is a useful tool for comparing spectra before and after shaping.
![Create spectral decomposition process](https://media.screensteps.com/image_assets/assets/004/348/221/original/8a156dd3-377d-458b-93f9-a98601aca469.png)
- In the Control Panel, open the Process tab.
- At the tab header, click the Add icon and select New Process.
- Double-click Spectral Shaping.
- Type a name for the process and click OK.
Spectral Shaping settings
![Define spectral decomposition settings](https://media.screensteps.com/image_assets/assets/004/348/224/original/f60838f4-3e4f-4620-858c-f7964d62aaa6.png)
- In the Volume search box, select the seismic volume to process.
-
Apply inverse - applies a reversed version of the filter.
- To undo or remove spectral shaping, use the "Apply inverse" setting with the original filter parameters.
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Fill the gain control section with:
- Frequency: the frequency to which the gain is applied
- Gain: the amplitude of the gain to be applied (in decibels)
- Click the blue + button to add a new Frequency.
The output volumes can be viewed in any of the following views:
- IL/CL View
- 3D View
- Map View
Spectral Shaping Examples
Note: Spectral shaping can distort your data if applied incorrectly. Choose appropriate parameters for your data and always QC your results.
The following examples show Spectral Shaping applied to a gathers volume with different frequency and gain settings:
![original gather volume](https://media.screensteps.com/image_assets/assets/000/363/719/original/2e59ba58-fef9-491f-8f3c-04dda2ea1b2c.png)
![dampen high frequencies](https://media.screensteps.com/image_assets/assets/000/363/717/original/d05b4c52-40dc-454a-b9ec-e40c56e5a697.png)
![boost high frequencies](https://media.screensteps.com/image_assets/assets/001/923/293/original/d19c6566-50c7-409b-8054-bc7effe9822a.png)
![](https://media.screensteps.com/image_assets/assets/000/363/768/original/0c2e1117-ebb8-4ec0-a006-bbd8b4212feb.png)