1
Jae hoon Jeong, Sang bae Jeong, Jeong su Kim, Nam hoon Kim: Apparatus and method for speech recognition using a plurality of confidence score estimation algorithms. Samsung Electronics, Staas & Halsey, September 24, 2013: US08543399 (7 worldwide citation)

An apparatus for speech recognition includes: a first confidence score calculator calculating a first confidence score using a ratio between a likelihood of a keyword model for feature vectors per frame of a speech signal and a likelihood of a Filler model for the feature vectors; a second confidenc ...


2
In Jeong Choi, Nam Hoon Kim, Ick Sano Han, Sang Bae Jeong: Method and apparatus for searching multimedia data using speech recognition in mobile device. Samsung Electronics, Staas & Halsey, June 12, 2012: US08200490 (5 worldwide citation)

A method of searching music using speech recognition in a mobile device, the method including: recognizing a speech signal uttered by a user as a phoneme sequence; and searching music information by performing partial symbol matching between the recognized phoneme sequence and a standard pronunciati ...


3
Sang bae Jeong, In jeong Choi, Ick sang Han, Jeong su Kim: Speech recognition method and apparatus using lexicon group tree. Samsung Electronics, Staas & Halsey, May 31, 2011: US07953594 (3 worldwide citation)

A method and an apparatus for selecting a vocabulary closest to an input speech from among lexicons stored in memory, wherein a centroid lexicon representing lexicons belonging to a predetermined lexicon group is generated. Two lexicons, having a longest distance therebetween in the lexicon group, a ...


4
Nam Hoon Kim, In Jeong Choi, Ick Sang Han, Sang Bae Jeong: Large-vocabulary speech recognition method, apparatus, and medium based on multilayer central lexicons. Samsung Electronics, Staas & Halsey, December 1, 2009: US07627474 (3 worldwide citation)

A speech recognition method including: layering a central lexicon in a tree structure with respect to recognition-subject vocabularies; performing multi-pass symbol matching between a recognized phoneme sequence and a phonetic sequence of the central lexicon layered in the tree structure; and select ...


5
Gil Jin Jang, In Jeong Choi, Sang Bae Jeong: Apparatus and method of reducing noise by controlling signal to noise ratio-dependent suppression rate. Samsung Electronics, Staas & Halsey, March 15, 2011: US07908139 (1 worldwide citation)

An apparatus for reducing a noise signal of a speech signal in a speech recognizer, the apparatus estimating a signal to noise ratio for each frequency band of the speech signal, applying a noise suppression rate based on the estimated signal to noise ratio, and reducing the noise signal of the spee ...


6
Jae hoon Jeong, Sang bae Jeong, Jeong su Kim, In Jeong Choi: Method and apparatus for recognizing speech by measuring confidence levels of respective frames. Samsung Electronics, Staas & Halsey, September 18, 2012: US08271283 (1 worldwide citation)

Disclosed herein is a method and apparatus to recognize speech by measuring the confidence levels of respective frames. The method includes the operations of obtaining frequency features of a received speech signal for the respective frames having a predetermined length, calculating a keyword model- ...


7
Sang Bae Jeong, Nam Hoon Kim, Ick Sang Han, In Jeong Choi, Gil Jin Jang, Jae Hoon Jeong: Recognition confidence measuring by lexical distance between candidates. Samsung Electronics, Staas & Halsey, March 24, 2015: US08990086

A recognition confidence measurement method, medium and system which can more accurately determine whether an input speech signal is an in-vocabulary, by extracting an optimum number of candidates that match a phone string extracted from the input speech signal and estimating a lexical distance betw ...


8
Sang bae Jeong, Nam hoon Kim, Jeong su Kim, In jeong Choi, Ick sang Han: Apparatus and method for recognizing voice. Samsung Electronics, Staas & Halsey, March 20, 2012: US08140334

An apparatus and method for recognizing voice. The apparatus includes a feature vector extraction unit dividing an input voice signal into predetermined unit regions, and extracting feature vectors corresponding to each of the unit regions; a predicted node extraction unit extracting a list of secon ...


9
Gil Jin Jang, In Jeong Choi, Sang Bae Jeong: Apparatus and method of reducing noise by controlling signal to noise ratio-dependent suppression rate. Samsung Electronics, Staas & Halsey, July 26, 2007: US20070172073-A1

An apparatus for reducing a noise signal of a speech signal in a speech recognizer, the apparatus estimating a signal to noise ratio for each frequency band of the speech signal, applying a noise suppression rate based on the estimated signal to noise ratio, and reducing the noise signal of the spee ...


10
Sang Bae Jeong, Nam Hoon Kim, Ick Sang Han, In Jeong Choi, Gil Jin Jang, Jae Hoon Jeong: Recognition confidence measuring by lexical distance between candidates. Samsung Electronics, Staas & Halsey, August 9, 2007: US20070185713-A1

A recognition confidence measurement method, medium and system which can more accurately determine whether an input speech signal is an in-vocabulary, by extracting an optimum number of candidates that match a phone string extracted from the input speech signal and estimating a lexical distance betw ...