10.6

84Logic Pro Instruments
• Transient produces a vertical edge that slopes to the right, typical of a percussive
drum hit.
• Custom uses the Lasso selection as a brush shape.
• Size knob: Scale the size of the brush chosen in the Brush pop-up menu.
Note: When a custom brush is active, the Size knob is not available.
• Color knob: Set the amplitude scaling of the brush. At 100%, brush strokes are white. At
50%, brush strokes are mid-blue. At zero, brush strokes are black. This knob is visible
only when both the Draw and Brush buttons are active.
Note: When a custom brush is active, the maximum intensity is defined by the custom
brush data.
• Mode pop-up menu and field: Choose a mode that determines how the brush interacts
with the existing canvas image in draw mode. This menu is visible only when both the
Draw and Brush buttons are active.
• Normal: Each pixel on the canvas is set identically to the corresponding brush pixel.
• Add: Brush pixel values are added to the existing canvas pixel values. In this mode,
painting multiple coats of blue results in increasingly higher amplitudes with each
coat.
• Multiply: Brush pixel values are multiplied with the existing canvas pixel values. Use
this to selectively brighten parts of the image.
• Mono/Stereo buttons: Switch the display mode between mono and stereo.
Note: This does not change the sound. In mono mode, stereo sounds are represented
as a single image that represents both channels. Edits affect the left and right channels
equally. In stereo mode, stereo sounds are shown in left and right lanes. Edits affect
only the channel they are made in.
• Resolution buttons: Switch the display between a linear and logarithmic representation
of your spectral data on the vertical y-axis. Logarithmic (right button) is the default.
• Linear (left): A simple linear scale with 11 KHz shown at the halfway point on the
vertical y-axis. This mode is useful for detailed editing of very high frequency
content.
• Logarithmic (right): A logarithmic scale for frequency that corresponds more closely
with human perception of pitch. Content at the halfway position on the y-axis is
approximately 1 KHz. Log mode is useful for most editing duties.
• 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.