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| Number | Title | Issue Date |
| 7013275 | Method and apparatus for providing a dynamic speech-driven control and remote service access system An apparatus and a concomitant method for speech recognition. In one embodiment, a distributed speech recognition system provides speech-driven control and remote service access. The distributed speech recognition system comprises a client device and a central serve... | 03/14/2006 |
| 7003459 | Method and system for predicting understanding errors in automated dialog systems This invention concerns a method and system for monitoring an automated dialog system for the automatic recognition of language understanding errors based on a user's input communications. The method includes determining whether a probability of understanding the us... | 02/21/2006 |
| 6993484 | Speech synthesizing method and apparatus An amplitude altering magnification (r) applied to sub-phoneme units of a voiced portion and an amplitude altering magnification s to be applied to sub-phoneme units of an unvoiced portion are determined based upon a target phoneme average power (p0) of s... | 01/31/2006 |
| 6947890 | Acoustic speech recognition method and system using stereo vision neural networks with competition and cooperation A method and system are provided for speech recognition. The speech recognition method includes the steps of preparing training data representing acoustic parameters of each of phonemes at each time frame; receiving an input signal representing a sound to be recogni... | 09/20/2005 |
| 6917917 | Apparatus and method for voice recognition and displaying of characters in mobile telecommunication system An apparatus and method for speech recognition and character displaying in a mobile telecommunication system. In a speech recognition and character displaying apparatus for a mobile phone, an RF Module processes a signal received from a base station or to be transmi... | 07/12/2005 |
| 6910010 | Feature extraction apparatus and method and pattern recognition apparatus and method A feature extraction and pattern recognition system in which an observation vector forming input data, which represents a certain point in the observation vector space, is mapped to a distribution having a spread in the feature vector space, and a feature distributi... | 06/21/2005 |
| 6882970 | Language recognition using sequence frequency A system is provided for comparing an input query with a number of stored annotations to identify information to be retrieved from a database. The comparison technique divides the input query into a number of fixed-size fragments and identifies how many times each o... | 04/19/2005 |
| 6879956 | Speech recognition with feedback from natural language processing for adaptation of acoustic models A speech recognition unit performs speech recognition on input speech based on models, such as HMMs, and supplies a speech recognition result to a dialog management unit. The dialog management unit forms a reply to the speech recognition result. In this case, the di... | 04/12/2005 |
| 6879953 | Speech recognition with request level determination A recognition result determination section determines whether or not a character string identified by a speech recognition section through a speech recognition process includes a desire type character string (non-specific instruction type operation character string)... | 04/12/2005 |
| 6876966 | Pattern recognition training method and apparatus using inserted noise followed by noise reduction A method and apparatus for training and using a pattern recognition model are provided. Under the invention, additive noise that matches noise expected in a test signal is included in a training signal. The noisy training signal is passed through one or more noise r... | 04/05/2005 |
| 6871180 | Decoding of information in audio signals Systems and methods are provided for decoding a message symbol in an audio signal. This message symbol is represented by first and second code symbols displaced in time. Values representing the code signals are accumulated and the accumulated values are examined to ... | 03/22/2005 |
| 6868377 | Multiband phase-vocoder for the modification of audio or speech signals A method and apparatus to inexpensively and efficiently process audio and speech signals. A method for processing a signal having at least one region of interest is provided. The method begins by dividing the signal into a plurality of sub-band signals, wherein a se... | 03/15/2005 |
| 6865536 | Method and system for network-based speech recognition Methods and systems for handling speech recognition processing in effectively real-time, via the internet, in order that users do not experience noticeable delays from the start of an exercise until they receive responsive feedback. A user uses a client to access th... | 03/08/2005 |
| 6862569 | Method and system for aligning natural and synthetic video to speech synthesis According to MPEG-4's TTS architecture, facial animation can be driven by two streams simultaneously—text, and Facial Animation Parameters. In this architecture, text input is sent to a Text-To-Speech converter at a decoder that drives the mouth shapes of the face... | 03/01/2005 |
| 6862566 | Method and apparatus for converting an expression using key words An expression converting method wherein for each sentence in a corpus, key words are selected from the sentence, a combination of key words that are in a co-occurrence relation is identified from among a predetermined number of combinations of key words among the se... | 03/01/2005 |
| 6829577 | Generating non-stationary additive noise for addition to synthesized speech A method for producing vowel sounds in a waveform generator using non-stationary additive noise (NSAN) can include computing a frequency spectrum for a selected group of pitch pulses in a recorded sample of a spoken vowel; identifying a set of formant values in the ... | 12/07/2004 |
| 6826530 | Speech synthesis for tasks with word and prosody dictionaries A plurality of tasks are set in a speech synthesizing process, in which at least one of speakers, emotion or situation at the time speeches are made, and contents of the speeches, is different, and word dictionaries, prosody dictionaries, and waveform dictionaries c... | 11/30/2004 |
| RE38649 | Method and apparatus for word counting in continuous speech recognition useful for reliable barge-in and early end of speech detection Speech recognition technology has attained maturity such that the most likely speech recognition result has been reached and is available before an energy based termination of speech has been made. The present invention innovatively uses the rapidly available speech... | 11/09/2004 |
| 6810380 | Personal safety enhancement for communication devices The present invention is a system and method for providing personal safety enhancement for communication devices having a speech recognition module. In one embodiment, when a specific speech segment recognized by the speech recognition module is received by a commun... | 10/26/2004 |
| 6807528 | Adding data to a compressed data frame Many low bit rate digital audio encoding systems, including Dolby Digital and MPEG-2 AAC generate data streams in which unused dummy, fill, stuffing, or null bits exist whenever the bit allocation function in the encoder does not utilize all available bits from a bi... | 10/19/2004 |
| 6804644 | Text processing system including a speech recognition device and text change means for changing a text-block data In a text processing system (1) are provided a speech recognition device (2) to which a spoken command information signal (SI) can be applied in a command inputting mode of the speech recognition device (2) and which is arranged for producing a ... | 10/12/2004 |
| 6804640 | Signal noise reduction using magnitude-domain spectral subtraction A method and apparatus for generating a noise-reduced feature vector representing human speech are provided. Speech data representing an input speech waveform are first input and filtered. Spectral energies of the filtered speech data are determined, and a noise red... | 10/12/2004 |
| 6789059 | Reducing memory requirements of a codebook vector search Methods and apparatus for quickly selecting an optimal excitation waveform from a codebook are presented herein. To reduce the number of computations required to choose the optimal codebook vector, a subset of codevectors are selected based upon optimal pulse locati... | 09/07/2004 |
| 6785652 | Method and apparatus for improved duration modeling of phonemes A method and an apparatus for improved duration modeling of phonemes in a speech synthesis system are provided. According to one aspect, text is received into a processor of a speech synthesis system. The received text is processed using a sum-of-products phoneme du... | 08/31/2004 |
| 6778962 | Speech synthesis with prosodic model data and accent type A speech synthesizing method includes determining the accent type of the input character string, selecting the prosodic model data from a prosody dictionary for storing typical ones of the prosodic models representing the prosodic information for the character strin... | 08/17/2004 |
| 6778951 | Information retrieval method with natural language interface A method for retrieving documents in a knowledge database is disclosed in which a natural language query question is mapped to a plurality of equivalent strings. Both relevancies in meaning and in wording pattern are taken into account in ranking the equivalent stri... | 08/17/2004 |
| 6778955 | System and method for processing low signal-to-noise ratio signals A system and method for use in a real time system and for processing a signal with a low signal-to-noise ratio (SNR). The system comprises a model for modeling an expected signal and a filter that uses the model for filtering the signal. The filter is used for gener... | 08/17/2004 |
| 6778965 | Data compression and expansion of an audio signal A data compression apparatus is disclosed for data compressing an audio signal. The data compression apparatus comprises an input terminal (1) for receiving the audio signal, a 1-bit A/D converter (4) for A/D converting the audio signal so as to obtain... | 08/17/2004 |
| 6778958 | Symbol insertion apparatus and method An apparatus and method are provided for the insertion of punctuation marks into appropriate positions in a sentence. An acoustic processor processes input utterances to extract voice data, and transforms the data into a feature vector. When the automatic insertion ... | 08/17/2004 |
| 6778957 | Method and apparatus for handset detection Disclosed is a method of automated handset identification, comprising receiving a sample speech input signal from a sample handset; deriving a cepstral covariance sample matrix from said first sample speech signal; calculating, with a distance metric, all distances ... | 08/17/2004 |
| 6775650 | Method for conditioning a digital speech signal The invention concerns a method for conditioning a digital speech signal(s) processed by successive frames, which consists carrying out a harmonic analysis to estimate the pitch on each frame where it has a speech activity, and in oversampling at an oversampling fre... | 08/10/2004 |
| 6772109 | Message handling method, message handling apparatus, and memory media for storing a message handling apparatus controlling program A communication system is provided which, upon communication, is capable of making a suitable response by using interpretation execution parts which conform to the background concepts and vocabularies of a conversation. A flexible and smooth information exchange and... | 08/03/2004 |
| 6768980 | METHOD OF AND APPARATUS FOR HIGH-BANDWIDTH STEGANOGRAPHIC EMBEDDING OF DATA IN A SERIES OF DIGITAL SIGNALS OR MEASUREMENTS SUCH AS TAKEN FROM ANALOG DATA STREAMS OR SUBSAMPLED AND/OR TRANSFORMED DIGITAL DATA A novel technique for high-bandwidth steganographic embedding of supplemental data in a series of digital signals or measurements, such as taken from analog data streams or subsampled and/or transformed digital data, wherein the series of measurements are derived th... | 07/27/2004 |
| 6768978 | Speech coding/decoding method and apparatus An input speech signal to an input terminal is supplied to a speech synthesizer section through a speech analyzer section and frequency parameter quantizer section to form a synthesis filter, and the input speech signal is expressed by quantized LPC coefficients rep... | 07/27/2004 |
| 6766289 | Fast code-vector searching Methods and apparatus for quickly selecting an optimal excitation waveform from a codebook are presented herein. In encoding schemes that use forward and backward pitch enhancement, storage and processor load is reduced by approximating a two-dimensional autocorrela... | 07/20/2004 |
| 6766291 | Method and apparatus for controlling the transition of an audio signal converter between two operative modes based on a certain characteristic of the audio input signal The invention relates to a method and apparatus for controlling the transition of a bypass capable codec between operative modes, based on a certain characteristic of the audio data signal processed by the codec. The apparatus relies on a control signal to determine... | 07/20/2004 |
| 6766290 | Voice responsive audio system An audio/video system may generate audio data for a user. The user in turn may provide voice commands to the audio/video system. The audio generated by the system may be adaptively delayed, amplitude adjusted, and subjected to sampling interval shifting before subtr... | 07/20/2004 |
| 6766292 | Relative noise ratio weighting techniques for adaptive noise cancellation In order to enhance the quality of a communication signal comprising speech signal components due to speech and noise signal components due to noise, a filter divides the communication signal into a plurality of frequency band signals representing the speech signal ... | 07/20/2004 |
| 6760699 | Soft feature decoding in a distributed automatic speech recognition system for use over wireless channels A method and apparatus for performing automatic speech recognition (ASR) in a distributed ASR system for use over a wireless channel takes advantage of probabilistic information concerning the likelihood that a given, portion of the data has been accurately decoded ... | 07/06/2004 |
| 6760703 | Speech synthesis method A speech synthesis method that generates a speech pitch wave from a reference speech signal by subjecting the reference speech signal to one of Fourier transform and Fourier series expansion to produce a discrete spectrum, that interpolates the discrete spectrum to ... | 07/06/2004 |
