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| Number | Title | Issue Date |
| 8046215 | Method and apparatus to detect voice activity by adding a random signal A method and apparatus to detect voice activity by using a zero-crossing rate includes removing noise included in an audio signal, adding a random signal having energy of a predetermined size to the audio signal from which noise is removed, extracting predetermined ... | 10/25/2011 |
| 7983906 | Adaptive voice mode extension for a voice activity detector There is provided a voice activity detection method for indicating an active voice mode and an inactive voice mode. The method comprises receiving a first portion of an input signal; determining that the first portion of the input signal includes an active voice sig... | 07/19/2011 |
| 7962331 | System and method for tuning and testing in a speech recognition system Systems and methods for improving the performance of a speech recognition system. In some embodiments a tuner module and/or a tester module are configured to cooperate with a speech recognition system. The tester and tuner modules can be configured to cooperate with... | 06/14/2011 |
| 7917357 | Real-time detection and preservation of speech onset in a signal A “speech onset detector” provides a variable length frame buffer in combination with either variable transmission rate or temporal speech compression for buffered signal frames. The variable length buffer buffers frames that are not clearly identified as either... | 03/29/2011 |
| 7742915 | Apparatus and method for transmitting and receiving data in a mobile communication terminal An apparatus for transmitting data from a mobile communication terminal includes an audio codec which converts a voice signal into digital voice data, a detection unit which detects a pause in the digital voice data, and a modulator/demodulator which modulates a sig... | 06/22/2010 |
| 7739107 | Voice signal detection system and method Provided is a voice signal detection system and method, which extracts peaks from an input signal, compares a voltage level of each of the extracted peaks to a pre-set threshold voltage level, converts the comparison result to a binary sequence, determines the lengt... | 06/15/2010 |
| 7729904 | Partial speech processing device and method for use in distributed systems A client device incorporates partial speech recognition for recognizing a spoken query by a user. The full recognition process is distributed over a client/server architecture, so that the amount of partial recognition signal processing tasks can be allocated on a d... | 06/01/2010 |
| 7698131 | Speech recognition system for client devices having differing computing capabilities A speech-enabled internet based computing system includes a configurable speech recognition engine which allows support for client devices having differing computing capabilities. Natural language operations can also be supported as desired. ... | 04/13/2010 |
| 7672840 | Voice speed control apparatus A voice speed control apparatus comprising: an utterance/non-utterance judging unit judging whether a processing target segment in inputted a voice signal is an utterance segment or a non-utterance segment; a non-utterance continuation length acquiring unit acquirin... | 03/02/2010 |
| 7672839 | Detecting audio signal activity in a communications system A method for detecting the presence or absence of an audio signal in a communications system in which an audio signal is encoded by a delta modulation encoding algorithm, and in which a step size parameter is adapted according to characteristics of the encoded signa... | 03/02/2010 |
| 7672841 | Method for processing speech data for a distributed recognition system Speech signal information is formatted, processed and transported in accordance with a format adapted for TCP/IP protocols used on the Internet and other communications networks. NULL characters are used for indicating the end of a voice segment. The method is usefu... | 03/02/2010 |
| 7634401 | Speech recognition method for determining missing speech A speech recognition method comprises importation of speech made by a user. This importation is started in accordance with the user's operation or movement. It is then determined whether beginning of the imported speech is present or missing. Pronunciation informati... | 12/15/2009 |
| 7617095 | Systems and methods for detecting silences in audio signals Silences are detected when a local signal power is below a given fixed or relative threshold value, the duration of the local signal power being below the given fixed or relative threshold value is within a first range and at least one of the parameters signal power... | 11/10/2009 |
| 7574353 | Transmit/receive data paths for voice-over-internet (VoIP) communication systems The present invention is a method and apparatus in a data processing system that includes a Voice over Internet Protocol (VoIP) communication system for improving transmit and receive data paths. The communication system includes a digital signal processing unit. Th... | 08/11/2009 |
| 7516065 | Apparatus and method for correcting a speech signal for ambient noise in a vehicle A speech correction apparatus includes a speaker for generating guidance speech; a microphone set at a hearing position; an acoustic-characteristic setting unit for separating ambient noise from the guidance speech at the hearing position; an operating unit; a speec... | 04/07/2009 |
| 7472058 | Automatic audio source detection for capture devices A method for selecting an audio source when capturing audio data with at least one capture device includes connecting an audio source to an audio input port of the capture device, turning off the output of the audio source, calculating first signal strengths of the ... | 12/30/2008 |
| 7469207 | Method and system for providing automated audible backchannel responses A voice processing system comprises a processing device that processes and receives a stream of voice input as a user is speaking. A software program executes program steps for determining a predetermined pattern of speech and silence during processing of stream of ... | 12/23/2008 |
| 7433358 | Characterization of impaired intervals in a voice over packet session using audio frame loss concealment An embodiment may include an apparatus comprising a dejitter buffer to receive packets containing audio data, a codec coupled with the dejitter buffer, the codec to receive coded audio frames from the dejitter buffer and decode them, and a concealed seconds meter co... | 10/07/2008 |
| 7433822 | Method and apparatus for encoding and decoding pause information At an audio source, pause information is added to audio data, the combination of which is subsequently packetized. The resulting packets are transmitted to an audio destination via a network in which different packets may be subjected to varying levels of delay. At ... | 10/07/2008 |
| 7418156 | Domain of definition in warper/morpher An efficient way to perform rendering operations in an image processing environment includes a warping engine having a warping module and a domain of definition (DOD) module. When an object is warped, a new DOD for the image is determined by the warping engine by co... | 08/26/2008 |
| 7412379 | Time-scale modification of signals Techniques utilising Time Scale Modification (TSM) of signals are described. The signal is analysed and divided into frames of similar signal types. Techniques specific to the signal type are then applied to the frames thereby optimising the modification process. Th... | 08/12/2008 |
| 7412376 | System and method for real-time detection and preservation of speech onset in a signal A “speech onset detector” provides a variable length frame buffer in combination with either variable transmission rate or temporal speech compression for buffered signal frames. The variable length buffer buffers frames that are not clearly identified as either... | 08/12/2008 |
| 7406096 | Tandem-free intersystem voice communication Techniques are presented herein to provide tandem-free operation between two wireless terminals through two otherwise incompatible wireless networks. Specifically, embodiments provide tandem-free operation between a wireless terminal communicating through a continuo... | 07/29/2008 |
| 7403893 | Method and apparatus for reconstructing voice information A communication system includes a destination that receives voice samples and a voice parameter generated by a source. The destination uses the voice samples and voice parameter to reconstruct voice information in response to a packet loss. The destination may recon... | 07/22/2008 |
| 7376556 | Method for processing speech signal features for streaming transport Speech signal information is formatted, processed and transported in accordance with a format adapted for TCP/IP protocols used on the Internet and other communications networks. NULL characters are used for indicating the end of a voice segment. The method is usefu... | 05/20/2008 |
| 7373294 | Intonation transformation for speech therapy and the like The intonation of speech is modified by an appropriate combination of resampling and time-domain harmonic scaling. Resampling increases (upsampling) or decreases (downsampling) the number of data points in a signal. Harmonic scaling adds or removes pitch cycles to o... | 05/13/2008 |
| 7372787 | Optical disc recording and reproducing apparatus permitting recording tests using external buffer memory and method of driving the apparatus An optical disc recording and reproducing apparatus permitting a recording test using an external memory, and a method of driving the apparatus is provided. The optical disc recording and reproducing apparatus reads and bypasses test data to be recorded, which is st... | 05/13/2008 |
| 7369997 | Controlling speech recognition functionality in a computing device A system and method for use in computing systems that employ speech recognition capabilities is provided. Where recognized speech can be dictation and commands, one or more buttons may be used to change modes of said computing systems to accept spoken words as dicta... | 05/06/2008 |
| 7366295 | Telephone signal generator and methods and devices using the same A method or device includes a telephone with an audio or video effects generator to produce audio or video effects that are transmitted as part of a signal from the telephone. ... | 04/29/2008 |
| 7366667 | Method and device for pause limit values in speech recognition Method and device for the recognition of words and pauses in a voice signal. The words (Wi) spoken in a row and pauses (Ti) are thereby combined as to be appertaining to a word group as soon as one of the pauses (Ti) exceeds a limit ... | 04/29/2008 |
| 7366658 | Noise pre-processor for enhanced variable rate speech codec An enhanced noise pre-processor in a speech codec smoothes channel energy estimate moving toward a first smoothing constant if a prior signal to noise ratio estimate for more than five channels are above a threshold and toward a second smaller smoothing constant oth... | 04/29/2008 |
| 7366461 | Method and apparatus for improving the quality of a recorded broadcast audio program Recordings of broadcast audio content often contain errors (e.g., noise, signal loss, interference, talkover). A method and apparatus are provided for improving the quality of such a recording. Multiple recordings of a broadcast audio program are identified, and are... | 04/29/2008 |
| 7362811 | Audio enhancement communication techniques A communication system (10) receives a communication signal comprising first and second data with different compression levels, such as highly compressed and weakly compressed levels. A mode detector (15) detects the level of compression. One or more s... | 04/22/2008 |
| 7363218 | Method and apparatus for fast CELP parameter mapping An apparatus and method for mapping CELP parameters between a source codec and a destination codec. The apparatus includes an LSP mapping module, an adaptive codebook mapping module coupled to the LSP mapping module, and a fixed codebook mapping module coupled to th... | 04/22/2008 |
| 7363232 | Method and system for enabling audio speed conversion The present invention provides a method and system for processing an audio signal. According to an exemplary method, an audio signal such as a digital voice signal is received and divided into one or more individual unit cycles. An audio speed conversion operation i... | 04/22/2008 |
| 7359856 | Speech detection system in an audio signal in noisy surrounding A method of detecting speech in an audio signal comprises a step of obtaining information on the energy of the audio signal, the energy information then being used to detect speech in the audio signal. The method further comprises a step of obtaining information on ... | 04/15/2008 |
| 7356464 | Method and device for estimating signal power in compressed audio using scale factors Estimating a signal power in a compressed audio signal [A] is provided, the audio signal comprising blocks of quantized samples, a given block being provided with a set of scale factors. The estimating is performed by extracting the set of scale factors from the com... | 04/08/2008 |
| 7346502 | Adaptive noise state update for a voice activity detector There is provided a method of updating a noise state of a voice activity detector (VAD) for indicating an active voice mode and an inactive voice mode. The method comprises receiving an input signal having a plurality of frames, determining an elapsed time since the... | 03/18/2008 |
| 7302388 | Method and apparatus for detecting voice activity Method and apparatus detect voice activity for spectrum or power efficiency purposes. The method determines and tracks the instant, minimum and maximum power levels of the input signal. The method selects a first range of signals to be considered as noise, and a sec... | 11/27/2007 |
| 7299173 | Method and apparatus for speech detection using time-frequency variance Speech presence is detected by first bandpass filtering (141, 143, 145) the speech to split it into banks of sub-bands. A matrix of shift registers (150) store each sub-band of speech. A power determining circuit (259) then determines individual... | 11/20/2007 |
