This is cool! Some of Teenage Engineering's Pocket Operators, at least PO-32 [1], uses a data-over-sound feature. Does Ggwave use a simple FSK-based modulation

This is cool! Some of Teenage Engineering's Pocket Operators, at least PO-32 [1], uses a data-over-sound feature. Does Ggwave use a simple FSK-based modulation just because it "sounds good"? Would it be possible to use a higher order modulation, e.g., QPSK, in order to achieve higher speeds? Or would that result in too many uncorrectable errors? [1] https://teenage.engineering/products/po-32 https://teenage.engineering/products/po-32