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You must love the US patent system, where else can you get a patent on something that blocks, swearing. *#@$, *!$@ – Wow, it really works :-P.

A recently unearthed patent application originally filed in October 2004 by Microsoft could make television and radio broadcasters very happy. In it, Microsoft describes the use of an “automatic censoring filter” that can censor undesirable speech in real-time (or batch mode, for Chris Rock). Here’s how it works:

The automatic censoring filter employs a lattice comprising either phonemes and/or words derived from phonemes for comparison against corresponding phonemes or words included in undesired speech data. If the probability that a phoneme or word in the input audio data stream matches a corresponding phoneme or word in the undesired speech data is greater than a probability threshold, the input audio data stream is altered so that the undesired word or a phrase comprising a plurality of such words is unintelligible or inaudible.

Just think of the uses!

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