Qi P Li

US Patent:

6519563, Feb 11, 2003

Filed:

Nov 22, 1999

Appl. No.:

09/444106

Inventors:

Chin-Hui Lee - Basking Ridge NJ
Qi P. Li - New Providence NJ
Olivier Siohan - New Providence NJ
Arun Chandrasekaran Surendran - Highland Park NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G10L 1514

US Classification:

704246, 704250, 704256

Abstract:

A speaker verification method and apparatus which advantageously minimizes the constraints on the customer and simplifies the system architecture by using a speaker dependent, rather than a speaker independent, background model, thereby obtaining many of the advantages of using a background model in a speaker verification process without many of the disadvantages thereof. In particular, no training data (e. g. speech) from anyone other than the customer is required, no speaker independent models need to be produced, no a priori knowledge of acoustic rules are required, and, no multi-lingual phone models, dictionaries, or letter-to-sound rules are needed. Nonetheless, in accordance with an illustrative embodiment of the present invention, the customer is free to select any password phrase in any language. Specifically, and in accordance with an illustrative embodiment of the present invention, the background model comprises a hidden Markov model having a cruder acoustic resolution than the customer model, which may, for example, be achieved by providing a background model containing fewer states than the customer model.

US Patent:

6701291, Mar 2, 2004

Filed:

Apr 2, 2001

Appl. No.:

09/824076

Inventors:

Qi P. Li - New Providence NJ
Olivier Siohan - New Providence NJ
Frank Kao-Ping Soong - Warren NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NY

International Classification:

G10L 1502

US Classification:

704236, 704251

Abstract:

A method and apparatus for extracting speech features from a speech signal in which the linear frequency spectrum data, as generated, for example, by a conventional frequency transform, is first converted to logarithmic frequency spectrum data having frequency data distributed on a substantially logarithmic (rather than linear) frequency scale. Then, a plurality of digital auditory filters is applied to the resultant logarithmic frequency spectrum data, each of these filters having a substantially similar shape, but centered at different points on the logarithmic frequency scale. Because each of the filters have a similar shape, the feature extraction approach of the present invention advantageously can be easily modified or tuned by adjusting each of the filters in a coordinated manner, with the adjustment of only a handful of filter parameters.

US Patent:

6782363, Aug 24, 2004

Filed:

May 4, 2001

Appl. No.:

09/848897

Inventors:

Chin-Hui Lee - Basking Ridge NJ
Qi P. Li - New Providence NJ
Jinsong Zheng - Edison NJ
Qiru Zhou - Scotch Plains NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G10L 1500

US Classification:

704248, 704233, 704210, 704215, 704253

Abstract:

A method and apparatus for performing real-time endpoint detection for use in automatic speech recognition. A filter is applied to the input speech signal and the filter output is then evaluated with use of a state transition diagram (i. e. , a finite state machine). The filter is advantageously designed in light of several criteria in order to increase the accuracy and robustness of detection. The state transition diagram advantageously has three states. The endpoints which are detected may then be advantageously applied to the problem of energy normalization of the speech portion of the signal.

US Patent:

7149690, Dec 12, 2006

Filed:

Sep 9, 1999

Appl. No.:

09/392844

Inventors:

Katherine Grace August - Matawan NJ, US
Nadine Blackwood - Matawan NJ, US
Qi P. Li - New Providence NJ, US
Michelle McNerney - Freehold NJ, US
Chi-Lin Shih - Berkeley Heights NJ, US
Arun Chandrasekaran Surendran - Highland Park NJ, US
Jialin Zhong - Berkeley Heights NJ, US
Qiru Zhou - Scotch Plains NJ, US

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G09B 5/06
G09B 17/00
G10L 15/22

US Classification:

704270, 704 8, 434167, 434185, 434319

Abstract:

A method and apparatus for interactive language instruction is provided that displays text files for processing, provide key features and functions for interactive learning, displays facial animation, and provides a workspace for language building functions. The system includes a stored set of language rules as part of the text-to-speech sub-system, as well as another stored set of rules as applied to the process of learning a language. The method implemented by the system includes digitally converting text to audible speech, providing the audible speech to a user or student (with the aid of an animated image in selected circumstances), prompting the student to replicate the audible speech, comparing the student's replication with the audible speech provided by the system, and providing feedback and reinforcement to the student by, for example, selectively recording or playing back the audible speech and the student's replication.

US Patent:

D611458, Mar 9, 2010

Filed:

Jun 8, 2009

Appl. No.:

29/338237

Inventors:

Qi Li - New Providence NJ, US

Assignee:

LI Creative Technologies, Inc. - Florham Park NJ

International Classification:

1401

US Classification:

D14225

US Patent:

D612832, Mar 30, 2010

Filed:

Jan 5, 2009

Appl. No.:

29/330297

Inventors:

Qi Li - New Providence NJ, US
Manli Zhu - Pearl River NY, US
Joshua J. Hajicek - Astoria NY, US
Uday Jain - Lawrenceville NJ, US
Yan Yin - Chatham NJ, US
Tom R. Burchfield - Orlando FL, US
Yan Huang - New Providence NJ, US

Assignee:

LI Creative Technologies, Inc. - Florham Park NJ

International Classification:

1403

US Classification:

D14150

US Patent:

D655270, Mar 6, 2012

Filed:

Oct 3, 2011

Appl. No.:

29/374754

Inventors:

Uday Jain - Lawrenceville NJ, US
Manli Zhu - Pearl River NY, US
Danny Kopit - Brooklyn NY, US
Huixian Tang - Oak Ridge NJ, US
Qi Li - New Providence NJ, US

Assignee:

LI Creative Technologies, Inc. - Florham Park NJ

International Classification:

1401

US Classification:

D14167

US Patent:

8359195, Jan 22, 2013

Filed:

Mar 26, 2009

Appl. No.:

12/411634

Inventors:

Qi Li - New Providence NJ, US

Assignee:

Li Creative Technologies, Inc. - Florham Park NJ

International Classification:

G10L 19/14
H03G 5/00

US Classification:

704205, 381 98

Abstract:

A method and device for processing signals representing speech or audio via a plurality of filters that approximate behaviors of the basilar membrane of human cochlea. Each of the plurality of filters is formed from a mother filter via the dilation and a shift in time and has the similar impulse response of the basilar membrane to the frequency band for which the filter represents. Any process can be conducted and any feature can be extracted in the domain of the filters' outputs for applications, such as noise reduction, speech synthesis, coding, and speech and speaker recognition. Processed signals can be synthesized back to the time domain via an inverse cochlear transform.