Automatic censorship of audio data for broadcast

Details Automatic censorship of audio data for broadcast Automatic censorship of audio data for broadcast

2004-10-28

2008-10-14

Hudspeth, David R. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S252000, C704S255000

Reexamination Certificate

active

07437290

ABSTRACT:
An input audio data stream comprising speech is processed by an automatic censoring filter in either a real-time mode, or a batch mode, producing censored speech that has been altered so that undesired words or phrases are either unintelligible or inaudible. 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. The censored speech can either be stored or made available to an audience in real-time.

REFERENCES:
patent: 6337947 (2002-01-01), Porter et al.
patent: 7139031 (2006-11-01), Bray
Seide et al (“Vocabulary-Independent Search in Spontaneous Speech”, IEEE International Conference on ASSP, May 2004).

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