excerpt from 1984, Appendix, The Principles of Newspeak, page 241-251:

...What was required, above all for political purposes, was short clipped words of unmistakable meaning which could be uttered rapidly and which roused the minimum of echoes in the speaker’s mind. The words of the B vocabulary even gained in force from the fact that nearly all of them were very much alike. Almost invariably these words — goodthink, Minipax, prolefeed, sexcrime, joycamp, Ingsoc, bellyfeel, thinkpol, and countless others — were words of two or three syllables, with the stress distributed equally between the first syllable and the last. The use of them encouraged a gabbling style of speech, at once staccato and monotonous. And this was exactly what was aimed at. The intention was to make speech, and especially speech on any subject not ideologically neutral, as nearly as possible independent of consciousness. For the purposes of everyday life it was no doubt necessary, or sometimes necessary, to reflect before speaking, but a Party member called upon to make a political or ethical judgement should be able to spray forth the correct opinions as automatically as a machine gun spraying forth bullets. His training fitted him to do this, the language gave him an almost foolproof instrument, and the texture of the words, with their harsh sound and a certain wilful ugliness which was in accord with the spirit of Ingsoc, assisted the process still further.

So did the fact of having very few words to choose from. Relative to our own, the Newspeak vocabulary was tiny, and new ways of reducing it were constantly being devised. Newspeak, indeed, differed from most all other languages in that its vocabulary grew smaller instead of larger every year. Each reduction was a gain, since the smaller the area of choice, the smaller the temptation to take thought. Ultimately it was hoped to make articulate speech issue from the larynx without involving the higher brain centres at all. This aim was frankly admitted in the Newspeak word duckspeak, meaning "to quack like a duck". Like various other words in the B vocabulary, duckspeak was ambivalent in meaning. Provided that the opinions which were quacked out were orthodox ones, it implied nothing but praise, and when the Times referred to one of the orators of the Party as a doubleplusgood duckspeaker it was paying a warm and valued compliment.

excerpt from Part 1, Chapter 5, page 46-47:

...Winston turned a little sideways in his chair to drink his mug of coffee. At the table on his left the man with the strident voice was still talking remorselessly away....He held some important post in the FICTION DEPARTMENT....It was just a noise, a quack-quack-quacking....Every word of it was pure orthodoxy, pure Ingsoc....Winston had a curious feeling that this was not a real human being but some kind of dummy. It was not the man's brain that was speaking, it was his larynx. The stuff that was coming out of him consisted of words, but it was not speech in the true sense: it was noise uttered in unconsciousness, like the quacking of a duck.

Syme had fallen silent for a moment, and with the handle of his spoon was tracing patterns in the puddle of stew. The voice from the other table quacked rapidly on, easily audible in spite of the surrounding din.

"There is a word in Newspeak" said Syme, "I don't know whether you know it: duckspeak, to quack like a duck. It is one of those interesting words that have two contradictory meanings. Applied to an opponent, it is abuse: applied to someone you agree with, it is praise.

"I was actually born on Krypton."

(This was not a real human being but some kind of dummy. It was not the man's brain that was speaking, it was his larynx. It was noise uttered in unconsciousness, like the quacking of a duck). Go to OBAMA HEADING US INTO ABYSS

DUCKSPEAKER BUSH (reader asks for duckspeak examples in events within the last month)

5.Pyramidal New World Order and 27.Goodthink and 18.Newspeak