Microphone initialization enhancement for speech recognition
First Claim
1. A method of speech recognition for use with a system having a microphone, comprising:
- receiving a signal from the microphone representative of a speech to be recognized, wherein the microphone was turned off before receiving the signal;
identifying an initial portion of the speech that contains omitted sounds;
performing speech recognition on the signal with reduced contribution from the initial portion of the speech, wherein a quantity by which the contribution of the initial portion is reduced is a configurable parameter;
when speech recognition has fallen below a predetermined threshold, requesting a user to speak a predetermined redundant word before an intended speech, wherein the predetermined redundant word turns on the microphone and is user configurable; and
speech recognizing the intended speech after the predetermined redundant word.
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Accused Products
Abstract
A method and arrangement for improved speech recognition in a telephonically challenging speakerphone in-car environment. The method includes receiving a signal from a microphone representative of speech to be recognized, performing detection of a transition in the signal indicative of switch on of the microphone, and, in response to the detection, performing speech recognition on the signal with reduced contribution from an initial portion thereof. The initial portion may be treated as optional speech, the speech recognition may be performed with a predetermined redundant sound, and a user may be requested to speak the predetermined redundant sound when speech recognition has fallen below a predetermined threshold. Thus, recognition may be made possible when otherwise it would not be possible, recognition match scoring will be increased as the low weighting given by deleted initial sounds will be eliminated and therefore confusion of the recognized phrase will be reduced.
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Citations
10 Claims
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1. A method of speech recognition for use with a system having a microphone, comprising:
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receiving a signal from the microphone representative of a speech to be recognized, wherein the microphone was turned off before receiving the signal; identifying an initial portion of the speech that contains omitted sounds; performing speech recognition on the signal with reduced contribution from the initial portion of the speech, wherein a quantity by which the contribution of the initial portion is reduced is a configurable parameter; when speech recognition has fallen below a predetermined threshold, requesting a user to speak a predetermined redundant word before an intended speech, wherein the predetermined redundant word turns on the microphone and is user configurable; and speech recognizing the intended speech after the predetermined redundant word. - View Dependent Claims (2, 3, 4, 5)
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6. A speech recognition arrangement for use with a system having a microphone, comprising:
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means for receiving a signal from the microphone representative of a speech to be recognized, wherein the microphone was turned off before receiving the signal; means for identifying an initial portion of the speech that contains omitted sounds; means for performing speech recognition on the signal with reduced contribution from the initial portion of the speech, wherein a quantity by which the contribution of the initial portion is reduced is a configurable parameter; means for, when speech recognition has fallen below a predetermined threshold, requesting a user to speak a predetermined redundant word before an intended speech, wherein the predetermined redundant word turns on the microphone and is user configurable; and means for speech recognizing the intended speech after the predetermined redundant word. - View Dependent Claims (7, 8, 9, 10)
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Specification