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It uses the first generation Ambi chip. And the older Kodak, right, they're highly bad. The older Kodak of Ambi, which is what D-SAR uses, it's a very efficient Kodak. That's why you can get away with 6.25 kilohertz. But that's also the reason why D-SAR tends to sound very, very robotic without trickery and magic where you try and put back an audio that doesn't exist. The other thing too is it's lossy. There's no error correction. It just falls apart, and that's it. And the last thing is Tetra, which uses ACELP. And this is actually an exception to the D-V-SI monopoly. So Tetra uses an open source, algebraic, code-excited linear prediction Kodak. And that was actually standardized by European regulators. And that bypassed the Ambi family completely.