There’s been some discussion on Facebook and Discord about the SSSR Labs Matrixarchate, which is a pretty nifty audio module for making drastic patching changes quickly using a patch matrix. It supports save and recall of settings to 60 different storage locations, and selection of saved patches via a trigger input or via the i2c bus.
There’s obviously been a lot of interest on whether this module can be used for video. The patch matrix is implemented with unbuffered I/O and a switch IC (the MT8816AE) that makes passive high-bandwidth connections, and indeed the datasheet for the IC calls out video as one of the intended applications.
Using the module in practice, with complex sources (e.g. live cameras) it appears to work more or less okay with video. That’s the good news.
The bad news is that it doesn’t pass the oscilloscope test and it will blur your crisp edges. I finally upgraded my home studio scope so I didn’t have to lug modules to the lab for testing. Here’s a Prismatic Ray square wave at max frequency (yellow) routed into a 4ms Buffered Mult and into Matrixarchate input 1, and the resulting wave appearing at output A (purple.)
Something else in the design must be attenuating higher frequency signals. That doesn’t mean it’s not useful, but now people can make an informed decision!