A method of speech recognition includes recognizing a first utterance, recognizing a second utterance having information that is related to the first utterance, and determining the most probable first and second utterances based on stored information about valid relationships between possible first and second utterances. The most probable second utterance contains information that is semantically related to the most probable first utterance. The recognized first utterance may be recognized conti...

A speech decoder capable of auditorially reducing the quantization noise superimposed on the synthesized signal and improving a speech quality at lower bit rates is disclosed. A de-multiplexer unit 100 receives and separates an index concerning spectrum parameter, an index concerning amplitude, an index concerning pitch and an index concerning excitation signal. A synthesis filter unit 140 restores a synthesis filter drive signal based on the index concerning pitch, the index concerning excitati...

A notification device comprises control software including a calendar-type application, which is capable of managing notification messages and where the messages are associated with at least an item of notification content and a time of notification. The method comprises the steps of: deciding to notify a user, based at least in part on a comparison between said time of notification and current time, obtaining an audio signal based on the item of notification content, and outputting the audio si...

Systems and methods are described for a speech system that includes one or more speech controls incorporated into one or more speech-enabled applications that run on the speech system. The controls allow applications to be developed with minimal programming effort to incorporate common speech-enabled application functions. A question control provides a customizable template for requesting information from a user. An announcer control allows a speech-enabled application to provide a user with inf...

An analyzing unit 1 converts an input speech into a feature vector time series. A reference pattern storing unit 3 stores the feature vector time series obtained by the same manner as in the analyzing unit. A matching unit 2 correlates for time axis the input speech feature vector time series and the reference patterns to one another. An environmental adapting unit 4 performs the environmental adaptation between the input speech feature vector time series and the reference patterns according to ...

Systems and methods are described for a speech system that includes one or more speech controls incorporated into one or more speech-enabled applications that run on the speech system. The controls allow applications to be developed with minimal programming effort to incorporate common speech-enabled application functions. A question control provides a customizable template for requesting information from a user. An announcer control allows a speech-enabled application to provide a user with inf...

A speech synthesis method comprises selecting a predetermined formant parameters from formant parameters according to a pitch pattern, phoneme duration, and phoneme symbol string, generating a plurality of sine waves based on formant frequency and formant phase of the formant parameters selected, multiplying the sine waves by windowing functions of the selected formant parameters, respectively, to generate a plurality of formant waveforms, adding the formant waveforms to generate a plurality of ...

A method for pre-processing speech, in particular for recognizing speech, including receiving a speech signal, separating a spectrum of said speech signal into a number of predetermined frequency sub-bands, analyzing said speech signal within each of said frequency sub-bands, generating respective band-dependent acoustic feature data for each of said respective frequency sub-bands, deriving band-dependent likelihoods for occurrences of speech elements or within said speech signal based on said b...

Digitized multiplexing is effected by a variable rate asynchronous multiplexer, the sampling rate for each modulation being a function of the number of talkers at any given instant. Means are disclosed for continuously monitoring the number of talkers and utilizing the information obtained to divide this number into the total data rate to thereby effect a sample rate which is variable per channel but constant for the system or channel group.

A helium speech decoder of the type that may be used to an advantage by drs living, working, and communicating in and from deep water habitats is disclosed as including a microphone, a digital-to-analog converter, a battery of pairs of shift registers, a like battery of select gate circuits, an analog-to-digital converter, and earphones. A programmable generator produces a plurality of control signals which are timely supplied to the aforementioned components as necessary to effect the concerted...