Methods of identification using voice sound analysis
First Claim
Patent Images
1. A method of comparing voice signals, comprising:
- a. receiving a digital representation of each of a plurality of voice signals;
b. generating at least one reassigned spectrogram corresponding to each of said plurality of digital representations;
c. pruning each of said plurality of reassigned spectrograms to remove noise and computational artifacts, wherein said pruning comprises computing a mixed partial derivative of the phase of said spectrogram and removing data points from said spectrogram when said derivative is outside of a range;
d. comparing a first of said plurality of reassigned spectrograms to at least one other of said plurality of reassigned spectrograms, wherein said first reassigned spectrogram corresponds to a voice signal to be validated; and
e. identifying any similarities between said first spectrogram and any of said remaining spectrograms.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods of using individually distinctive patterns of voice characteristics to identify a speaker include computing the reassigned spectrogram of each of at least two voice samples, pruning each reassigned spectrogram to remove noise and other computational artifacts, and comparing (either visually or with the aid of a processor) the strongest points to determine whether the voice samples belong to the same speaker.
-
Citations
53 Claims
-
1. A method of comparing voice signals, comprising:
-
a. receiving a digital representation of each of a plurality of voice signals; b. generating at least one reassigned spectrogram corresponding to each of said plurality of digital representations; c. pruning each of said plurality of reassigned spectrograms to remove noise and computational artifacts, wherein said pruning comprises computing a mixed partial derivative of the phase of said spectrogram and removing data points from said spectrogram when said derivative is outside of a range; d. comparing a first of said plurality of reassigned spectrograms to at least one other of said plurality of reassigned spectrograms, wherein said first reassigned spectrogram corresponds to a voice signal to be validated; and e. identifying any similarities between said first spectrogram and any of said remaining spectrograms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
-
39. A method of comparing two voice sounds to determine whether they came from the same source, comprising:
-
a. recording a first voice signal; b. selecting a first vocal vibration from said first voice signal; c. isolating at least four cycles of phonation of said first vocal vibration; d. computing a first reassigned spectrogram of said first vocal vibration for said isolated phonation cycles; e. pruning said first reassigned spectrogram to remove unwanted elements by computing a mixed partial derivative of the phase of said first reassigned spectrogram and removing data points from said first reassigned spectrogram when said derivative is outside of a range; f. recording a second voice signal; g. selecting a second vocal vibration from said second voice signal; h. isolating at least four cycles of phonation of said second vocal vibration; i. computing a second reassigned spectrogram of said second vocal vibration for said isolated phonation cycles; j. pruning said second reassigned spectrogram to remove unwanted signal elements by computing a mixed partial derivative of the phase of said second reassigned spectrogram and removing data points from said second reassigned spectrogram when said derivative is outside of a range; and k. comparing said first and said second reassigned spectrograms. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
-
-
51. A method of verifying the identity of a person, comprising:
-
a. generating a first reassigned spectrogram of a selected portion of a first voice sample; b. generating a second reassigned spectrogram of a selected portion of a second voice sample; c. pruning unwanted elements from both of said spectrograms by computing mixed partial derivatives of the phases of each of said spectrograms and removing data points from said spectrogram when said derivatives are outside of a range; and d. comparing said first and said second pruned reassigned spectrograms. - View Dependent Claims (52, 53)
-
Specification