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US 7,072,750 B2Granted
Method and apparatus for rejection of speech recognition results in accordance with confidence level
AssigneeIntel Corporation
InventorsXiaobo Pi, Ying Jia
Life of this patent
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Abstract
An automatic speech recognition system for continuous speech recognition of vocabulary words for an autoattendent system proving hand-free telephone calling and utilizing a vocabulary comprising numbers or names of people to be called using known techniques for automatic speech recognition models of word sequencing resulting in high confidence levels of recognition.
Claims16
A system for rejection of unreliable speech recognition results comprising:
- a speech recognition decoder to provide phone and word level information based upon an audio input;
- a speech information processor being programmed to produce phone and word parameters;
- and
- a neural network classifier to receive evidence vectors and to calculate error signals, said neural network providing error signals comprising confidence information on which a word rejection decision may be based.
1 more element
A method comprising:
- decoding phonemes resolved from a speech input measuring the probability p(x) that the decoder has determined a phoneme based on a preselected acoustical model;
- generating evidence parameters;
- normalizing said evidence parameters;
- and
- calculating error signals based upon said evidence vectors.
2 more elements
A computer program product comprising:
- a computer usable medium having computer readable program code embodied in said medium to utilize audio inputs to produce a probability indicative of measurement of a phoneme;
- computer readable program code to cause the computer to produce error vectors based on calculated evidence parameters calculated from said probability signal;
- and
- computer readable program code to cause said computer to provide an error signal value on which acceptance or rejection of a measure phoneme is based.
1 more element
Dependencies are inferred from the claim text.