Why do all Cartoon Ducks have speech impediments?
Do non-English-speaking ducks also evince impediments? Do ducks have impediments in duckspeak? Or only in human languages?
Why do English-speaking humans say “quack quack” to ducks? This sounds nothing like a duck and seems at least as linguistically impaired as, say, “Stthhhufferin’ stthhhhucotashthh!”
Isn’t it obvious? The voice people are trying to suggest the ducks’ quacking. That’s how Clarence “Ducky” Nash got hisd job – by doing a “quacking” voice. Some other cartoon ducks also have such voices.
Daffy, on the other hand, had a voice that, in some measure, spoofed that of Leon chlesinger (the producer whose name is on the opening credits of the Warner Brothers carytoons). Sylvester the cat does so, as well. According to things I’ve read, Sclesinger rarely came down to the trenches where they were making the cartoons, but his voice was distinctive. And he always said the same few phrases. It was hard for Mel Blanc not to parody him. Or for his voice to end up attached to characters.
And not all ducks have speech impediments. Daisy Duck never had one. In fact, in one Disney cartoon, Donald takes a pill that gives him a “handsome” voice to appeal to the quackless Daisy.
I don’t think Duckman had a speech impediment.
Hen is fickle.
Of course he does – he sounds like Jason Alexander.
I can’t recall exactly which other cartoon ducks have “sopeech impediments”, but there are others. IIRC, “Dinky Duck” did.
Fer cryin’ out loud!
You’d think it would be enough to train the damn birds to talk at all, but noooooo, Bosda demands perfect diction!
Sheesh! 
I don’t see Daffy as having any speech impediment. Sylvester has a lisp (that’s the only real difference in the voices), but Daffy speaks just fine.
“That’th the latht time I work with thomebody with a Thpeech impediment!”
– Daffy Duck in Who Framed Roger Rabbit
It’s not always strong, and it’s not always there, but Daffy’s got ther same lisp as Sylvester (albeit in a slightly different way.)
Maybe if they didn’t have the impediment they wouldn’t echo.
“Quack, damn you!”
I’m pretty sure that I heard in a DVD commentary that Mel Blanc used the same voice for Daffy and Sylvester – the difference was in the way they were played back …wish I could remember more…
Daisy has no speech impediment. Questionable taste in men, but no speech impediment.
Neither does Unca Scrooge – unless a Scottish brogue counts as a speech defect, that is.
Look up to post #3
If you consider WFRR cannon, then this is the first time, I believe, that one cartoon duck has implied that another cartoon duck has a speech impediment.
According to Mel Blanc’s autobiography, IIRC, Daffy is sped up about 30 percent, and has leth thpray than Sylvester.
I don’t think Count Duckula had an impediment did he?
In Duck Tales, it’s made clear in the 5-part pilot (and in subsequent episodes) that Donald’s speech impediment is unique.
Plucky Duck from Tiny Toons also has a pretty normal voice.