| Patent application number | Description | Published |
|---|
| 20100063819 | LANGUAGE MODEL LEARNING SYSTEM, LANGUAGE MODEL LEARNING METHOD, AND LANGUAGE MODEL LEARNING PROGRAM - A language model learning system for learning a language model on an identifiable basis relating to a word error rate used in speech recognition. The language model learning system ( | 03-11-2010 |
| 20100094629 | WEIGHT COEFFICIENT LEARNING SYSTEM AND AUDIO RECOGNITION SYSTEM - A weighting factor learning system includes an audio recognition section that recognizes learning audio data and outputting the recognition result; a weighting factor updating section that updates a weighting factor applied to a score obtained from an acoustic model and a language model so that the difference between a correct-answer score calculated with the use of a correct-answer text of the learning audio data and a score of the recognition result becomes large; a convergence determination section that determines, with the use of the score after updating, whether to return to the weighting factor updating section to update the weighting factor again; and a weighting factor convergence determination section that determines, with the use of the score after updating, whether to return to the audio recognition section to perform the process again and update the weighting factor using the weighting factor updating section. | 04-15-2010 |
| 20100114572 | SPEAKER SELECTING DEVICE, SPEAKER ADAPTIVE MODEL CREATING DEVICE, SPEAKER SELECTING METHOD, SPEAKER SELECTING PROGRAM, AND SPEAKER ADAPTIVE MODEL MAKING PROGRAM - To enable selection of a speaker, the acoustic feature value of which is similar to that of an utterance speaker, with accuracy and stability, while adapting to changes even when the acoustic feature value of the speaker changes every moment. A speaker score calculating means ( | 05-06-2010 |
| 20100204985 | FREQUENCY AXIS WARPING FACTOR ESTIMATION APPARATUS, SYSTEM, METHOD AND PROGRAM - A warping factor estimation system comprises label information generation unit that outputs voice/non-voice label information, warp model storage unit in which a probability model representing voice and non-voice occurrence probabilities is stored, and warp estimation unit that calculates a warping factor in the frequency axis direction using the probability model representing voice and non-voice occurrence probabilities, voice and non-voice labels, and a cepstrum. | 08-12-2010 |
| 20100318358 | RECOGNIZER WEIGHT LEARNING DEVICE, SPEECH RECOGNIZING DEVICE, AND SYSTEM - A speech recognition apparatus ( | 12-16-2010 |
| 20100324897 | AUDIO RECOGNITION DEVICE AND AUDIO RECOGNITION METHOD - Acoustic models and language models are learned according to a speaking length which indicates a length of a speaking section in speech data, and speech recognition process is implemented by using the learned acoustic models and language models. A speech recognition apparatus includes means ( | 12-23-2010 |
| 20110071825 | DEVICE, METHOD AND PROGRAM FOR VOICE DETECTION AND RECORDING MEDIUM - To this end, a voice detection device includes a band-based power calculation unit that calculates a total of signal power values (sub-band power) of signals entered from the microphones from one preset frequency width (sub-band) to another. The voice detection device also includes a band-based noise estimation unit that estimates the sub-band based noise power, and a sub-band based SNR calculation unit. The sub-band based SNR calculation unit calculates a sub-band SNR from one sub-band to another to output the largest one of the sub-band SNRs as an SNR for a microphone of interest. The voice detection device further includes a voice/non-voice decision unit that determines the voice/non-voice using the SNR for the microphone of interest. | 03-24-2011 |
| 20110202339 | SPEECH SOUND DETECTION APPARATUS - A speech sound detection apparatus receives an input audio signal (as a sound reception unit), and computes input power that indicates a magnitude of the sound represented by the audio signal (as an input power computation unit). The apparatus estimates a correction function that is a continuous function defining a relation between a certain frequency and a correction coefficient used to approximate the input power computed at that frequency to the reference power predetermined for that frequency (as a correction function estimation unit). The apparatus corrects the input power at every frequency, based upon the correction coefficient that is obtained in accordance with the relation defined by the estimated correction function (as an input power correcting unit). The apparatus further determines whether or not the sound represented by the received audio signal is speech sound, based upon the corrected input power (as a speech sound detection unit). | 08-18-2011 |
