Matches 101 - 150 out of 467 < 1 2 3 4 5 6 7 8 9 10 >
Match Document Document Title
7043424 Pitch mark determination using a fundamental frequency based adaptable filter  
A method of pitch mark determination for a speech includes the following steps. First, a fundamental frequency and fundamental frequency passband signals are acquired by using an adaptable filter....
7039582 Speech recognition using dual-pass pitch tracking  
A computationally efficient and robust pitch detection and tracking system and related methods are presented. According to certain exemplary implementations a method is presented comprising...
7039584 Method for the encoding of prosody for a speech encoder working at very low bit rates  
A speech encoding/decoding method using an encoder working at very low bit rates, comprises a learning step enabling the identification of the representatives of the speech signal; and an encoding...
7035791 Feature-domain concatenative speech synthesis  
A method for speech synthesis includes receiving an input speech signal containing a set of speech segments, and estimating spectral envelopes of the input speech signal in a succession of time...
7024358 Recovering an erased voice frame with time warping  
An approach to reduce the quality impact due to lost voiced frame data is presented. The decoder reconstructs the lost frame using the pitch track from a directly prior frame. When the decoder...
7020177 Method and apparatus to transfer information  
Briefly, in accordance with an embodiment of the invention, a method and apparatus to transfer information is provided, wherein the method includes transferring information between at least two...
7016832 Voiced/unvoiced information estimation system and method therefor  
A voiced/unvoiced information estimation system uses input spectrum and synthetic spectrum to produce a voicing level spectrum. The estimation system uses a spectrum difference calculation unit to...
7016840 Method and apparatus for synthesizing speech and method apparatus for registering pitch waveforms  
A speech synthesis apparatus ( 10 ) comprises speech segment disassembling means ( 101 ) for disassembling the speech segments each including at least one phoneme into a plurality of pitch...
6988064 System and method for combined frequency-domain and time-domain pitch extraction for speech signals  
A system, computer readable medium, and method for sampling a speech signal; dividing the sampled speech signal into overlapped frames; extracting first pitch information from a frame using...
6985857 Method and apparatus for speech coding using training and quantizing  
A perceptually weighted speech coder system samples a speech signal and determines its pitch. The speech signal is characterized as fully voiced, partially voiced or weakly voiced. A Lloyd-Max...
6983241 Method and apparatus for performing harmonic noise weighting in digital speech coders  
To address the need for choosing values of harmonic noise weighting (HNW) coefficient (ε p ) so that the amount of harmonic noise weighting can be optimized, a method and apparatus for performing...
RE38889 Pitch period extracting apparatus of speech signal  
A pitch period extracting apparatus includes a microcomputer which determines a sampling frequency for an A/D converter, and a range of delay times for calculating autocorrelative values on the...
6968309 Method and system for speech frame error concealment in speech decoding  
A method and system for concealing errors in one or more bad frames in a speech sequence as part of an encoded bit stream received in a decoder. When the speech sequence is voiced, the...
6963833 Modifications in the multi-band excitation (MBE) model for generating high quality speech at low bit rates  
The invention relates to improving parameter estimation and speech synthesis. Pursuant to one aspect of the invention, a path of pitch candidates having low errors is tracked to determine a pitch...
6961696 Class quantization for distributed speech recognition  
A system, method and computer readable medium for quantizing class information and pitch information of audio is disclosed. The method on an information processing system includes receiving audio...
6959274 Fixed rate speech compression system and method  
The invention improves the encoding and decoding of speech by focusing the encoding on the perceptually important characteristics of speech. The system analyzes selected features of an input speech...
6954726 Method and device for estimating the pitch of a speech signal using a binary signal  
A method of estimating the pitch of a speech signal comprises the steps of sampling the speech signal to obtain a series of samples, dividing the series of samples into segments, each segment...
6952673 System and method for adapting speech playback speed to typing speed  
A system and method for automatically adjusting the rate at which recorded speech is played back as a typist manually transcribes the speech. The typing speed is measured and a speech playback rate...
6952669 Variable rate speech data compression  
A device is presented that includes an encoder. The encoder compresses a plurality of signals at variable frame rates based on a plurality of prioritized parameters to reduce signal bandwidth while...
6937978 Suppression system of background noise of speech signals and the method thereof  
A suppression system of background noise of speech signals uses an adaptive filter of long-time and short-time statistical characteristics of the speech signals. Since the statistical...
6920424 Determination and use of spectral peak information and incremental information in pattern recognition  
Generally, the present invention determines and uses spectral peak information, which preferably augments feature vectors and creates augmented feature vectors. The augmented feature vectors...
6917912 Method and apparatus for tracking pitch in audio analysis  
A computationally efficient and robust pitch detection and tracking system and related methods are presented. According to certain exemplary implementations a method is presented comprising...
6915257 Method and apparatus for speech coding with voiced/unvoiced determination  
This invention presents a voicing determination algorithm for classification of a speech signal segment as voiced or unvoiced. The algorithm is based on a normalized autocorrelation where the...
6915256 Pitch quantization for distributed speech recognition  
A system, method and computer readable medium for quantizing pitch information of audio is disclosed. The method includes capturing audio representing a numbered frame of a plurality of numbered...
6898566 Using signal to noise ratio of a speech signal to adjust thresholds for extracting speech parameters for coding the speech signal  
There are provided speech coding methods and systems for estimating a plurality of speech parameters of a speech signal for coding the speech signal using one of a plurality of speech coding...
6889183 Apparatus and method of regenerating a lost audio segment  
A method and apparatus for generating a new audio segment that is based upon a given audio segment of an audio signal first locates a set of consecutive audio segments in the audio signal. The...
6885986 Refinement of pitch detection  
Successive pitch periods/frequencies are accurately determined in an audio equivalent signal. Using a suitable conventional pitch detection technique, an initial value of the pitch frequency/period...
6876953 Narrowband signal processor  
A method to process narrowband signals includes dividing the signal into segments of length N, where N optimizes filter bandwidth, FFT size, processing and memory. Each N-length segment is...
6876965 Reduced complexity voice activity detector  
A voice activity detector is disclosed for use with a radio transmitter to continuously sense the presence of speech in an audio signal. Initially, the audio signal is processed to produce a train...
6865529 Method of estimating the pitch of a speech signal using an average distance between peaks, use of the method, and a device adapted therefor  
A method of estimating the pitch of a speech signal comprises the steps of dividing the speech signal into segments, calculating for each segment a conformity function, and detecting peaks in the...
6829939 Method and apparatus for measuring sound that takes hearing characteristics into consideration  
Sounds input via a sound input device are corrected in accordance with age-based hearing characteristic data read from a memory or correction values for reference hearing characteristics for...
6829578 Tone features for speech recognition  
Robust acoustic tone features are achieved first by the introduction of on-line, look-ahead trace back of the fundamental frequency (F 0 ) contour with adaptive pruning, this fundamental frequency...
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...
6816833 Audio signal processor with pitch and effect control  
An audio processing apparatus is constructed for generating an auxiliary audio signal based on an original audio signal and mixing the auxiliary audio signal to the original audio signal. In the...
6810381 Audio coding and decoding methods and apparatuses and recording medium having recorded thereon programs for implementing them  
In the CELP coding system a low-order synthesis filter and a cascade-connected synthesis filter formed by a cascade connection of low- and high-order synthesis filters are provided, a synthesized...
6804639 Celp voice encoder  
A CELP type speech coder performs quantization of pitch differential value on pitch information between subframes. The coder limits the number of preliminary selected candidates using threshold...
6801887 Speech coding exploiting the power ratio of different speech signal components  
A method and system for waveform interpolation speech coding. The method comprises the steps of decomposing the speech signal into a slowly evolving waveform component and a rapidly evolving...
6795805 Periodicity enhancement in decoding wideband signals  
An alternative approach by which periodicity enhancement of an excitation signal is achieved through filtering an innovative codevector by an innovation filter to reduce low frequency content of...
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...
6766288 Fast find fundamental method  
The present invention contains three methods for quickly deducing the fundamental frequency of a complex wave form or signal. One method uses the relationships among the frequencies of higher...
6763329 Method of converting the speech rate of a speech signal, use of the method, and a device adapted therefor  
A method of converting the speech rate of a speech signal with a pitch period below a maximum expected pitch period comprises the steps of dividing the speech signal into segments, estimating the...
6760645 Training of autonomous robots  
A clicker-training technique developed for animal training is adapted for training robots, notably autonomous animal-like robots. In this robot-training method, a behaviour (for example, (DIG)) is...
6760698 System for coding speech information using an adaptive codebook with enhanced variable resolution scheme  
A speech coding system includes an adaptive codebook containing excitation vector data associated with corresponding adaptive codebook indices (e.g., pitch lags). Different excitation vectors in...
6741962 Speech recognition system and standard pattern preparation system as well as speech recognition method and standard pattern preparation method  
A speech recognition system for recognizing an input voice of a narrow frequency band. The speech recognition system includes: a frequency band converting unit for converting the input voice of the...
6738739 Voiced speech preprocessing employing waveform interpolation or a harmonic model  
Voiced speech preprocessing employs waveform interpolation or a harmonic model circuit to smooth a transition region and simplify speech coding. At low bit rates, the speech is coded by a system...
6721699 Method and system of Chinese speech pitch extraction  
A method and system for Chinese speech pitch extraction is disclosed. The method and system for Chinese speech pitch extraction comprises: pre-computing an anti-bias auto-correlation of a Hamming...
6711467 Robot apparatus and its control method  
At first, a history of user use is stored and a next action is determined based on the history of use. Secondly, behavior of a robot apparatus is determined based on a cycle parameter which allows...
6708081 Electronic equipment with an autonomous function  
The invention is directed to electronic equipment, such as a pet robot, with an autonomous emotion-based function. The electronic equipment executes environment detection processing,...
6704701 Bi-directional pitch enhancement in speech coding systems  
A bi-directional pitch enhancement system for speech coding systems. As speech data applications continue to operate in areas having intrinsic bandwidth limitations, the perceptual quality of...
6697708 Robot apparatus and robot apparatus motion control method  
A robot apparatus includes a command controller ( 101 ) for outputting an output command associated with an input command, management units ( 102 ), ( 103 ) and ( 104 ) for outputting data...
Matches 101 - 150 out of 467 < 1 2 3 4 5 6 7 8 9 10 >