A Patch-Bay Matrix Synthesizer

In this chapter, we are going to build a patch-bay synthesizer, much like the analog synthesizers. We will simulate the interface, but instead of an audio signal, we will pass connection data through the patch cords. The data will be sent to the computer so that the corresponding connections can be done in the program. We will use external chips (we will call them ICs from now on, which stands for integrated circuit) to extend both the analog and the digital pins of the Arduino for more available input and output. Finally, we are going to use oscillators, filters, and envelopes to build the various parts of the program, which we have already used. We will be able to connect these parts between them through the patch-bay interface that we will build.