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while the older phase one that relied on the earlier IMB codec. And P25 applies highly aggressive error correction to the vocoder, and that's why it survives noisy environments. In fact, I will think the error correction in the original P25 was better than the phase two, but that's just my opinion. D-Star, that just uses AMBI, and that's the lossy version of it. So it uses the first generation AMBI chip, and older codec, right? They're highly bad. The older codec of AMBI, which is what D-Star uses, is a very efficient codec. That's why you can get away with 6.25 kilohertz. But that's also the reason why D-Star tends to sound very, very robotic without trickery and magic, and try and put back an audio that doesn't exist. The other thing too is it's super-lossy. There's no error correction.