Method of accessing a dial-up service
View Patent ↗A method of accessing a dial-up service is disclosed. An example method of providing access to a service includes receiving a first speech signal from a user to form a first utterance; recognizing the first utterance using speaker independent speaker recognition; requesting the user to enter a personal identification number; and when the personal identification number is valid, receiving a second speech signal to form a second utterance and providing access to the service.
1. A method comprising:
receiving a first speech signal and a second speech signal;
generating, via a processor, feature coefficients based at least in part on the first speech signal and the second speech signal;
comparing the feature coefficients to a codebook to yield an utterance similarity value, wherein the codebook is associated with a database of reference speech signals;
if the utterance similarity value is above a threshold, providing access to a service and adding at least one of the first speech signal and the second speech signal to the database of reference signals.
2. The method of claim 1 , wherein the first speech signal and the second speech signal are received from a single user.
3. The method of claim 1 , further comprising:
combining the first speech signal and the second speech signal to form a mixed signal; and
adding the mixed signal to the database of reference signals.
4. The method of claim 1 , wherein the feature coefficients are at least one of cepstrum coefficients and linear predictive coding coefficients.
5. The method of claim 1 , wherein the threshold is determined using a Chi-squared detector.
6. The method of claim 1 , further comprising, if the utterance similarity value is below the threshold, requesting a user to repeat at least one of the first speech signal and the second speech signal.
7. The method of claim 1 , further comprising verifying a user based on the first speech signal using a speaker verification system when the user has used the service previously.
8. A system comprising:
a processor; and
a non-transitory computer-readable storage medium having stored therein instructions which, when executed by the processor, cause the processor to perform a method comprising:
receiving a first speech signal and a second speech signal;
generating feature coefficients based at least in part on the first speech signal and the second speech signal;
comparing the feature coefficients to a codebook to yield an utterance similarity value, wherein the codebook is associated with a database of reference speech signals;
if the utterance similarity value is above a threshold, providing access to a service and adding at least one of the first speech signal and the second speech signal to the database of reference signals.
9. The system of claim 8 , wherein the first speech signal and the second speech signal are received from a single user.
10. The system of claim 8 , the non-transitory computer-readable storage medium storing further instructions which, when executed by the processor, cause the processor to perform a method further comprising:
combining the first speech signal and the second speech signal to form a mixed signal; and
adding the mixed signal to the database of reference signals.
11. The system of claim 8 , wherein the feature coefficients are at least one of cepstrum coefficients and linear predictive coding coefficients.
12. The system of claim 8 , wherein the threshold is determined using a Chi-squared detector.
13. The system of claim 8 , the non-transitory computer-readable storage medium storing further instructions which, when executed by the processor, cause the processor to perform a method further comprising, if the utterance similarity value is below the threshold, requesting a user to repeat at least one of the first speech signal and the second speech signal.
14. The system of claim 8 , the non-transitory computer-readable storage medium storing further instructions which, when executed by the processor, cause the processor to perform a_method further comprising verifying a user based on the first speech signal using a speaker verification system when the user has used the service previously.
15. A non-transitory computer-readable storage medium having stored therein instructions which, when executed by a computing device, cause the computing device to perform a method comprising:
receiving a first speech signal and a second speech signal;
generating feature coefficients based at least in part on the first speech signal and the second speech signal;
comparing the feature coefficients to a codebook to yield an utterance similarity value, wherein the codebook is associated with a database of reference speech signals;
if the utterance similarity value is above a threshold, providing access to a service and adding at least one of the first speech signal and the second speech signal to the database of reference signals.
16. The non-transitory computer-readable storage medium of claim 15 , wherein the first speech signal and the second speech signal are received from a single user.
17. The non-transitory computer-readable storage medium of claim 15 , the instructions which, when executed by the computing device, cause the computing device to perform a method further comprising:
combining the first speech signal and the second speech signal to form a mixed signal; and
adding the mixed signal to the database of reference signals.
18. The non-transitory computer-readable storage medium of claim 15 , wherein the feature coefficients are at least one of cepstrum coefficients and linear predictive coding coefficients.
19. The non-transitory computer-readable storage medium of claim 15 , wherein the threshold is determined using a Chi-squared detector.
20. The non-transitory computer-readable storage medium of claim 15 , the instructions which, when executed by the computing device, cause the computing device to perform a method further comprising, if the utterance similarity value is below the threshold, requesting a user to repeat at least one of the first speech signal and the second speech signal.