Abstract: Techniques for introducing background noise segments into signal data are provided. The background noise segments are constructed from a background noise print extracted from the signal data. The background noise print may be user specified, or automatically identified by the signal editing tool. The background noise print may be stored with, and subsequently loaded as part of, the project associated with a signal. The background noise segments that are generated based on the background noise print may have different durations than the background noise print itself.

Abstract: Techniques for introducing background noise segments into signal data are provided. The background noise segments are constructed from a background noise print extracted from the signal data. The background noise print may be user specified, or automatically identified by the signal editing tool. The background noise print may be stored with, and subsequently loaded as part of, the project associated with a signal. The background noise segments that are generated based on the background noise print may have different durations than the background noise print itself.

Abstract: Techniques for changing operations performed relative to digital signal data that represents a recording of a signal are provided. A digital signal data-editing program displays an ordered list of items. Each item in the list corresponds to one or more operations that a user has instructed the program to perform relative to the digital signal data. The order of the items in the list determines the order in which the operations corresponding to those items are performed relative to the digital signal data. In response to user input, the program may perform a change such as inserting a new item into the list, removing an existing item from the list, altering the order of one or more items in the list, etc. The program subsequently modifies the display of the list to reflect the change. The change may be performed without disturbing the last-ordered item in the list.

Abstract: Techniques for providing visual feedback to illustrate the effects of editing operations are provided. This visual feedback may be provided in the form of an animated image that visually represents the pre-operation data gradually “morphing” into the data as affected by an operation. The data may be digital signal data that represents a recording of sound, for example. In response to a user's activation of a particular editing operation that affects the data, a resulting visual representation is generated. The resulting visual representation represents the data in the post-operation state, after the effects of the particular editing operation have been applied to the data completely. However, before the resulting visual representation is displayed, intermediate, interpolated visual representations of the data are generated and displayed.

Abstract: Techniques are provided for generating a heads-up-display to assist users during performance of media manipulation operations. According to one embodiment, a transient heads-up-display is displayed during a media manipulation operation to assist the user in the media manipulation operation. The heads-up-display may, for example, depict three frames of a video clip when an audio clip is being positioned, on a timeline, relative to the video clip. The three frames that are depicted in the heads-up-display may be the frames located at the current starting position, cursor position, and ending position, of the audio clip. As the audio clip is being moved during the positioning operation, the three frames depicted in the heads-up-display change accordingly.

Abstract: Techniques are described for causing digital image data to be interpreted according to a particular technique of a plurality of techniques. According to an embodiment, digital sensor data is received, and user input is received that specifies which technique of a plurality of techniques to use to generate a display that depicts an unmodified image from the sensor data, wherein each technique of the plurality of techniques generates a display from the sensor data in a different manner than each other technique of the plurality of techniques.