3.5

85MainStage Instruments
• Image button: Choose an import image option from the pop-up menu.
• Import Image: Opens a dialog where you can select a file in PNG format that is
placed directly on the spectral canvas. The imported image is positioned at the far
left of the canvas. The height of the image is scaled to fit the entire vertical range of
the canvas, and the width of the image is scaled by the same factor as the height,
retaining the original image proportions. All color information is discarded, and
image brightness information is mapped to amplitude. If the imported image width
does not extend fully to the right edge of the canvas, existing data beyond the image
edge remains in place. Images with a height of 256 lines result in a one-to-one map
of pixels to spectral bins.The spectral editor display is actually 381 lines tall, so
edits involve some blurring between bins.
• Import Image to Brush: Opens a dialog where you can select a file in PNG format to
be used as a brush for painting on the spectral canvas. The original dimensions of
the image are preserved. You can place the image at any position with a click, or you
can drag to paint with it.
• Clear button: Deletes all spectral data from the source, leaving only silence (a solid
black image).
• Scroll bar and zoom controls: Drag the middle of the scroll bar to view spectral data
that is not visible in the display area. Horizontally drag the zoom controls at either end
of the scroll bar to resize the contents of the visible display area.
Alchemy main filters
MainStage Alchemy main filter controls
Main filter components are shown only in advanced view. Click the Advanced button to
switch to advanced view, then click the Global button.
There are two main filter modules, labeled Filter 1 and Filter 2. The filters can operate in
parallel or in series.
The output from all four sources is sent to the main filters at levels determined by
independent controls in each source. Both main filter modules provide multi-mode filters
with identical controls.