The output is mixed from an array of inputs, linearly interpolating from a number of adjacent channels. A focus argument allows to control how many adjacent sources are mixed.
Index of the selected input, which is also the center of the selection for a focus < 1.
A collection of inputs.
The "fuzziness" of the selection: the larger the focus, the more adjacent inputs are mixed in.
If set to true, index will wrap around the array of inputs (see also: Array: -wrapAt).