METHOD AND DEVICE FOR ASCERTAINING FEATURE VECTORS FROM A SIGNAL
First Claim
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1. A method for the computer-aided ascertainment of feature vectors from a digitized signal representing a spoken voice for voice recognition, comprising:
- using the signal to form intermediate feature vectors, at least some of whose components indicate a power spectrum from part of the digitized signal;
subjecting the intermediate feature vectors to high-pass filtering by a high-pass filter;
multiplying the intermediate feature vectors by a weighting factor using a weighting unit; and
adding, using an adder, a respective addition feature vector to at least some of the high-pass-filtered intermediate feature vectors, to produce a feature vector representing the spoken voice for use in voice recognition the addition feature vectors used being the respective intermediate feature vectors multiplied by the weighting factor.
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Abstract
A signal is used to form intermediate feature vectors which are subjected to high-pass filtering. The high-pass-filtered intermediate feature vectors have a respective prescribed addition feature vector added to them.
27 Citations
17 Claims
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1. A method for the computer-aided ascertainment of feature vectors from a digitized signal representing a spoken voice for voice recognition, comprising:
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using the signal to form intermediate feature vectors, at least some of whose components indicate a power spectrum from part of the digitized signal; subjecting the intermediate feature vectors to high-pass filtering by a high-pass filter; multiplying the intermediate feature vectors by a weighting factor using a weighting unit; and adding, using an adder, a respective addition feature vector to at least some of the high-pass-filtered intermediate feature vectors, to produce a feature vector representing the spoken voice for use in voice recognition the addition feature vectors used being the respective intermediate feature vectors multiplied by the weighting factor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for computer-aided voice recognition, comprising:
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using a digitized signal representing a spoken voice to form intermediate feature vectors; subjecting the intermediate feature vectors to high-pass filtering by a high-pass filter; multiplying the intermediate feature vectors by a weighting factor using a weighting unit; adding, using an adder, a respective addition feature to at least some of the high-pass-filtered intermediate feature vectors, the addition feature vectors used being the respective intermediate feature vectors multiplied by the weighting factor; and using the sum formed as feature vectors representing the spoken voice to perform voice recognition. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification