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Clearing the Undo/Redo History for the current file
Clearing the current file’s Undo/Redo History frees up disk space by deleting the file’s temporary undo/redo files. However, deleting these temporary files prevents you from undoing changes made to the file since it was last saved (or beyond, if you have the Allow Undo past Save check box enabled on the File tab of the Preferences dialog). To clear the undo/redo history for the current file, go to the Special menu, choose Undo/Redo History, and choose Clear from the submenu.
Note: A file’s undo/redo history is also automatically cleared when you close the file or exit Sound Forge.
Clearing the Undo/Redo History for all open files
Sound Forge also allows you to simultaneously clear the undo/redo history for all open files. Once again, however, you cannot undo any previous changes once these histories are deleted. To clear the undo/redo history for all open files, go to the Special menu, choose Undo/Redo History, and choose Clear All from the submenu.
Selecting status formats
The status format determines how Sound Forge displays a file’s position and length information. The following table briefly describes status formats that Sound Forge supports (hh=hours, mm=minutes, ss=seconds, and ff=frames).
Format name | Description | Format |
Samples | Number of samples | Numbered (starting with zero) |
Time | Hours, minutes, seconds, and milliseconds | hh:mm:ss.sss |
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Seconds | Seconds and fractions of seconds | sssss.sss (to three decimal places) |
Time & Frames | Hours, minutes, seconds, and frames. | hh:mm:ss.ff |
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Absolute Frames | Frames and fractions of frames | Numbered (starting with zero, to |
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| three decimal places) |
Measures & Beats | Measures, beats, and quarter beats | measures:beats.quarters |
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SMPTE Film Sync (24 fps) | SMPTE at 24 frames per second for | hh:mm:ss:ff |
| synchronizing with film |
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SMPTE EBU (25 fps, Video) | SMPTE at 25 frames per second for | hh:mm:ss:ff |
| European Broadcasting Union |
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SMPTE | SMPTE at 29.97 frames per second | hh:mm:ss:ff |
SMPTE Drop (29.97 fps, Video) | SMPTE at 29.97 frames per second using | hh:mm:ss:ff |
| dropped frame numbers |
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SMPTE 30 (30 fps, Audio) | SMPTE at 30 frames per second | hh:mm:ss:ff |
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GETTING STARTED | CHP. 4 |