The Pin matrix is a compact and visual to way to semi-permanently route signals or program devices, such as in early digital electronics[1][2] or lighting control boards.[3][4]
The number of patches that can be made is limited[5] and the proximity of signal wires in the matrix can cause crosstalk.[6]
Synths that have used a pin matrix
Also known for being used to patch (program) some synthesizers. Generally inputs are on one axis and outputs on the other and a pin inserted where the two axes meet establishes a connection.[5]
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