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What Is That ''source/destination'' Thing


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Source/destination editing is a feature of Sequoia, Samplitude's high-end sister program. It is used extensively in classical music editing. Classical musicians do not (usually) play to click tracks, and do not do punch-in recording. Because of this, multiple takes of the same material will generally not be of exactly the same length. Thus, it is not possible to use Take Composer to make classical edits. Source/destination provides another way of assembling the recorded material into a final product.

Here is a simple example. A live orchestra performance goes well, but in measures 200-204 the violas miss an entrance. :o Fortunately, they play the passage correctly the following evening, but the conductor prefers the first performance overall. Therefore, the task is to replace measures 200-204 from the first performance with the same measures from the following night. Because the replacement material is not of exactly the same length, it can't be inserted without moving things around. One can do this edit in Samplitude, but it requires moving material after measure 204 out of the way, attaching the replacement material, and then reattaching the remainder of the original performance. This is not a very efficient way to work when there may be hundreds of such edits in a typical classical CD project.

Here's how the same job is done using source/destination editing in Sequoia. Designate all tracks of the first performance as destination tracks. Set the destination in-point marker at the beginning of measure 200. Set the destination out-point at the end of measure 204. Designate all tracks of the second performance as source tracks. Set source in-point and out-point markers. Press the four-point cut button. The material between the destination markers is replaced by the material between the source markers. (This is done using default cross-fades, which may be adjusted later using the Sequoia cross-fade editor.) It doesn't matter that the replacement material is of a different length.

The other feature of Sequoia that has driven its adoption by classical engineers is the cross-fade editor. That's a topic for another time.

David L. Rick

Seventh String Recording

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