That's just another ECC and things like raptor codes to exist, which could achieve analog-ish characteristics in digital transmissions. I suspect this kind of

That's just another ECC and things like raptor codes to exist, which could achieve analog-ish characteristics in digital transmissions. I suspect this kind of encoding works badly with encryption, as decryption needs a perfect preimage otherwise the decrypted message will simply be garbage. Also, even a slightly increased delay makes for very awkward conversations.