Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 8135586 | Method and apparatus for estimating noise by using harmonics of voice signal Disclosed is a method and an apparatus for estimating noise included in a sound signal during sound signal processing. The method includes estimating harmonics components in a frame of an input sound signal; using the estimated harmonics components, computing a Voic... | 03/13/2012 |
| 8073687 | Audio regeneration method According to an aspect of an embodiment, a method for regenerating an audio signal including a low frequency component and a high frequency component by decoding a coded data including a first coded data and a second coded data, the method comprising the steps of: g... | 12/06/2011 |
| 8055499 | Transmitter and receiver for speech coding and decoding by using additional bit allocation method The present invention relates to a transmitter and a receiver for speech coding and decoding by using an additional bit allocation method. The transmitter and the receiver according to the present invention realize a voice communication service of high quality by us... | 11/08/2011 |
| 7869993 | Method and a device for source coding A method and a device for source coding with a time advanced excitation signal. During an encoding process, a source data signal is first divided into consecutive blocks, then a first set of parameters related to a filter describing properties of a first block cover... | 01/11/2011 |
| 7860711 | Transmitter and receiver for speech coding and decoding by using additional bit allocation method The present invention relates to a transmitter and a receiver for speech coding and decoding by using an additional bit allocation method. The transmitter and the receiver according to the present invention realize a voice communication service of high quality by us... | 12/28/2010 |
| 7627469 | Audio signal encoding apparatus and audio signal encoding method Any disagreement of the power level before encoding an audio signal and the power level after encoding the audio signal is adjusted to improve the sound quality to the auditory sense. The present invention provides an audio signal encoding apparatus comprising, a ba... | 12/01/2009 |
| 7472059 | Method and apparatus for robust speech classification A speech classification technique for robust classification of varying modes of speech to enable maximum performance of multi-mode variable bit rate encoding techniques. A speech classifier accurately classifies a high percentage of speech segments for encoding at m... | 12/30/2008 |
| 7454328 | Speech encoding system, and speech encoding method A speech encoding apparatus calculates encoding distortion of a noise-like fixed code vector and multiplies the encoding distortion by a fixed weight corresponding to the noise-like degree of the noise-like fixed code vector, calculates encoding distortion of a non-... | 11/18/2008 |
| 7430507 | Frequency domain format enhancement A method for enhancing speech prediction coefficient signals, including: a) receiving a set of prediction coefficient signals; b) calculating a set of amplitude spectrum coefficient signals based on the prediction coefficient signals; c) calculating a set of enhance... | 09/30/2008 |
| 7424423 | Method and apparatus for formant tracking using a residual model A method of tracking formants defines a formant search space comprising sets of formants to be searched. Formants are identified for a first frame in the speech utterance by searching the entirety of the formant search space using the codebook, and for the remaining... | 09/09/2008 |
| 7379866 | Simple noise suppression model An approach for efficiently reducing background noise from speech signal in real-time applications is presented. A noisy input speech signal is processed through an inverse filter when the spectrum tilt of the input signal is not that of a pure background noise mode... | 05/27/2008 |
| 7373298 | Apparatus and method for coding excitation signal An excitation signal coding apparatus capable of improving an error resilience by changing an excitation vector search method (more specifically, an error minimization criterion during a search). This coding apparatus is allowed to choose either of an ordinary searc... | 05/13/2008 |
| 7369994 | Methods and apparatus for rapid acoustic unit selection from a large speech corpus A speech synthesis system can select recorded speech fragments, or acoustic units, from a very large database of acoustic units to produce artificial speech. The selected acoustic units are chosen to minimize a combination of target and concatenation costs for a giv... | 05/06/2008 |
| 7366661 | Information extracting device The present invention relates to an information extraction apparatus capable of analyzing an acoustic signal with accuracy and high efficiency. An amplitude analysis section 32 determines whether or not an attack or release is contained on the basis of... | 04/29/2008 |
| 7363219 | Hybrid speech coding and system Hybrid linear predictive speech coding system with phase alignment predictive quantization zero phase alignment of speech prior to waveform coding aligns synthesized speech frames of a waveform coder with frames synthesized with a parametric coder. Inter-frame inter... | 04/22/2008 |
| 7363217 | Method for analyzing energy consistency to process data A method for analyzing energy consistency to process data, for use with an electronic apparatus, includes the steps of analyzing energy consistency to process data, performing a data-buffering process for outputting a data frame, performing a data-processing process... | 04/22/2008 |
| 7359855 | LPAS speech coder using vector quantized, multi-codebook, multi-tap pitch predictor A method and apparatus for reducing the complexity of linear prediction analysis-by synthesis (LPAS) speech coders. The speech coder includes a multi-tap pitch predictor having various parameters and utilizing an adaptive codebook subdivided into at least a first ve... | 04/15/2008 |
| 7359522 | Coding of stereo signals A method of encoding a multi-channel signal having first and second signal components includes determining a set of filter parameters a prediction filter such that the prediction filter provides an estimate of the second signal component when receiving the first sig... | 04/15/2008 |
| 7356465 | Perfected device and method for the spatialization of sound The invention relates to a computer device comprising a memory 108 for storing audio signals 114, in part pre-recorded, each corresponding to a defined source, by means of spatial position data 116, and a processing module 110 for process... | 04/08/2008 |
| 7353168 | Method and apparatus to eliminate discontinuities in adaptively filtered signals A method to eliminate discontinuities in an adaptively filtered signal includes filtering a beginning portion of a current signal frame using a past set of filter coefficients, thereby producing a first filtered frame portion. The method also includes filtering the ... | 04/01/2008 |
| 7349846 | Information processing apparatus, method, program, and storage medium for inputting a pronunciation symbol An information processing apparatus for inputting a pronunciation symbol corresponding to an English notation includes pronunciation symbol information holding means for holding pronunciation symbol information indicating a relationship between a predetermined alpha... | 03/25/2008 |
| 7349847 | Speech synthesis apparatus and speech synthesis method A speech synthesis apparatus appropriately transforms a voice characteristic of speech. The speech synthesis apparatus includes an element storing unit in which speech elements are stored, and a function storing unit in which transformation functions are stored, an ... | 03/25/2008 |
| 7346110 | Multi-channel signal encoding and decoding A multi-part fixed codebook includes both individual fixed codebooks for each channel and a shared fixed codebook. Although the shared fixed codebook is common to all channels, the channels are associated with individual lags. Furthermore, the individual fixed codeb... | 03/18/2008 |
| 7346503 | Transmitter and receiver for speech coding and decoding by using additional bit allocation method The present invention relates to a transmitter and a receiver for speech coding and decoding by using an additional bit allocation method. The transmitter and the receiver according to the present invention realize a voice communication service of high quality by us... | 03/18/2008 |
| 7340390 | Mobile communication terminal and method therefore A method for organizing data records in a memory in a mobile telecommunication terminal is disclosed. The method comprises receiving a plurality of digits, which identify a subscriber terminal in a telecommunication network, in a control unit in the mobile, telecomm... | 03/04/2008 |
| 7337109 | Multiple step adaptive method for time scaling A multiple step adaptive method for time scaling. Synthesizing S3[n] signal from signal S1[n]signal and S2[n]signal. Comprising following steps: (a) calculating a first magnitude of a cross-correlation function of S1[n]sig... | 02/26/2008 |
| 7337108 | System and method for providing high-quality stretching and compression of a digital audio signal An adaptive “temporal audio scaler” is provided for automatically stretching and compressing frames of audio signals received across a packet-based network. Prior to stretching or compressing segments of a current frame, the temporal audio scaler first computes ... | 02/26/2008 |
| 7337107 | Perceptual harmonic cepstral coefficients as the front-end for speech recognition Pitch estimation and classification into voiced, unvoiced and transitional speech were performed by a spectro-temporal auto-correlation technique. A peak picking formula was then employed. A weighting function was then applied to the power spectrum. The harmonics we... | 02/26/2008 |
| 7333567 | Digital detector utilizable in providing closed-loop gain control in a transmitter A digital detector processes at least one received digital signal to generate a squared signal, encodes the squared signal, applies first and second portions of the encoded signal to a multiplier and a look-up element, respectively, and processes outputs of the mult... | 02/19/2008 |
| 7333465 | Method and apparatus for transmitting and receiving high speed data in a CDMA communication system using multiple carriers The present invention is a novel and improved method and apparatus for transmitting data in a multiple carrier CDMA communication system. In the first implementation of the present invention, the data is encoded and the resulting encoded symbols are divided up and t... | 02/19/2008 |
| 7330814 | Wideband speech coding with modulated noise highband excitation system and method A speech encoder/decoder for wideband speech with a partitioning of wideband into lowband and highband, convenient coding of the lowband, and LP excited by noise plus some periodicity for the highband. The embedded lowband may be extracted for a lower bit rate decod... | 02/12/2008 |
| 7328162 | Source coding enhancement using spectral-band replication The present invention proposes a new method and apparatus for the enhancement of source coding systems. The invention employs bandwidth reduction (101) prior to or in the encoder (103), followed by spectral-band replication (105) at the decoder ... | 02/05/2008 |
| 7319703 | Method and apparatus for reducing synchronization delay in packet-based voice terminals by resynchronizing during talk spurts Circuitry, embodied in a media subsystem (10A), reproduces a speech or other type of audio signal, and is operable when playing back audio data for reducing synchronization delay. A method operates by, when a frame containing audio data is sent to a decoder (... | 01/15/2008 |
| 7315820 | Text-derived speech animation tool A text-derived speech animation tool for producing simple, effective animations of digital media content that educate, entertain, and inform viewers by the presentation of speaking digital characters. The invention makes the creation of digital talking characters bo... | 01/01/2008 |
| 7315818 | Error correction in speech recognition New techniques and systems may be implemented to improve error correction in speech recognition. These new techniques and systems may be implemented to correct errors in speech recognition systems may be used in a standard desktop environment, in a mobile environmen... | 01/01/2008 |
| 7315812 | Method for determining the quality of a speech signal Objective measurement methods and devices for predicting perceptual quality of speech signals degraded in speech processing/transporting systems have unreliable prediction results in cases where the degraded and reference signals show in between severe timbre differ... | 01/01/2008 |
| 7315982 | User-tailorable romanized Chinese text input systems and methods Methods and systems for romanizing Chinese ideograms allow a user to create a personalized spelling dictionary that converts a user's desired roman-alphabet spelling to an equivalent Chinese character. A phonetic combination from a standard Chinese dialect is select... | 01/01/2008 |
| 7313518 | Noise reduction method and device using two pass filtering The device calculates a first frequency-dependent useful signal level estimator for the frame. The transfer function of a first noise-reducing filter is determined on the basis of the first useful signal level estimator and of a frequency-dependent noise level estim... | 12/25/2007 |
| 7302386 | Focused search method of fixed codebook and apparatus thereof There are provided a search method of a fixed codebook, and more particularly, a focused search method and apparatus thereof, for being applied to a speech codec for Voice over Internet Protocol (VoIP). The focused search method of the fixed codebook includes: calcu... | 11/27/2007 |
| 7295974 | Encoding in speech compression Linear predictive system with classification of LP residual Fourier coefficients into two or more overlapping classes, and each class has its own vector quantization codebook(s). The use of strong and weak predictors minimizes codebook size by only quantizing the di... | 11/13/2007 |
