Sound Editing with ProcessPack’s ‘Dispersal’ module.
With ProcessPack’s ‘Dispersal’ module, it is possible to undertake simple editing tasks, as well as to cut and splice fragments from a sound-file and combine them in a stereo sound-space, with control over many ‘pan’ features. As an example, let us select a four-second segment from a sound-file called ‘sunday.wav’, the original of which is nineteen seconds in length. We wish to extract, say, a four-second segment starting at 5.87”. To do this, we pre-select ‘sunday.wav’ from the list in the left-hand pane (by double-clicking on the name), and then click ‘Dispersal’ in the Processing pane to the right. The Dispersal screen which appears can seem a bit daunting to the novice! To achieve our goal, we need to set both Transposition Functions, External and Internal, to ‘None’, so that the segment we select will not be treated in any way. Next, we set the ‘How many Segments?’ value to 1, as we wish to cut out a single fragment rather than many. Since we wish to cut out just 4” from the file, we set the ‘Segment Cut-length’ to ‘Constant’ and use the scroll-wheel to select 4.00”. The ‘Segment Selection’ box should be set to ‘Single’, and when this is done, the ‘Single Segment Time’ box will become active and will show a value. If we click the ‘Segment Cut Position’ box to ‘Random’, a random value within the file will appear, and a new random value will be set each time we click the ‘Random’ button. However, in our example we know we wish to set the start-time of the segment to 5.87”, so we click ‘Forward’ for the ‘Segment Cut Position’. The ‘Single Segment Time’ value will change to ‘0.00’, and we can change this to 5.87” by using the scroll-wheel, or by selecting with the mouse the value inside the scroll-wheel box and typing in ‘5.87’. Now, when we click the ‘OK’ button at the bottom of the screen, we will most likely see a message saying ‘Setting output sound-file length to 4.00”’. This is because the output sound-file length has been re-set to comply with our request. (If the output sound-file length was already set to 4.00”, this message will not appear.) Clicking OK on the message box will close it, and return us the main ProcessPack window, where the new sound-file – by default named DSPn.wav (where n is the next number in the DSP series) will be listed in the sound-file (left) pane.
At this point we can listen to the file we have made, by double-clicking on the sound-file name, and then selecting ‘Audition’ in the right pane. Also, we can see the notes automatically added by pre-selecting the sound-file name, and pressing ‘n’ (for notes) on the keyboard. If desired, further notes may be added by the user before saving NotePad.
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