Patent application number | Description | Published |
20130332153 | LINEAR PREDICTION BASED CODING SCHEME USING SPECTRAL DOMAIN NOISE SHAPING - An encoding concept which is linear prediction based and uses spectral domain noise shaping is rendered less complex at a comparable coding efficiency in terms of, for example, rate/distortion ratio, by using the spectral decomposition of the audio input signal into a spectrogram having a sequence of spectra for both linear prediction coefficient computation as well as spectral domain shaping based on the linear prediction coefficients. The coding efficiency may remain even if such a lapped transform is used for the spectral decomposition which causes aliasing and necessitates time aliasing cancellation such as critically sampled lapped transforms such as an MDCT. | 12-12-2013 |
20130332177 | APPARATUS AND METHOD FOR CODING A PORTION OF AN AUDIO SIGNAL USING A TRANSIENT DETECTION AND A QUALITY RESULT - An apparatus for coding a portion of an audio signal to obtain an encoded audio signal for the portion of the audio signal includes a transient detector for detecting whether a transient signal is located in the portion of the audio signal to obtain a transient detection result, an encoder stage for performing first and second encoding algorithms on the audio signal, the first and second encoding algorithms having differing first and second characteristics, respectively, a processor for determining which encoding algorithm results in an encoded audio signal being a better approximation to the portion of the audio signal with respect to the other encoding algorithm to obtain a quality result, and a controller for determining whether the encoded audio signal for the portion of the audio signal is to be generated by either the first or the second encoding algorithm based on the transient-detection and quality results. | 12-12-2013 |
20150332686 | NOISE FILLING IN PERCEPTUAL TRANSFORM AUDIO CODING - Noise filling in perceptual transform audio codecs is improved by performing the noise filling with a spectrally global tilt, rather than in a spectrally flat manner. | 11-19-2015 |
20150332689 | NOISE FILLING CONCEPT - Noise filling of a spectrum of an audio signal is improved in quality with respect to the noise filled spectrum so that the reproduction of the noise filled audio signal is less annoying, by performing the noise filling in a manner dependent on a tonality of the audio signal. | 11-19-2015 |
20160027448 | LOW-COMPLEXITY TONALITY-ADAPTIVE AUDIO SIGNAL QUANTIZATION - The invention provides an audio encoder for encoding an audio signal so as to produce therefrom an encoded signal, the audio encoder including: a framing device configured to extract frames from the audio signal; a quantizer configured to map spectral lines of a spectrum signal derived from the frame of the audio signal to quantization indices, wherein the quantizer has a dead-zone, in which the input spectral lines are mapped to quantization index zero; and a control device configured to modify the dead-zone; wherein the control device includes a tonality calculating device configured to calculate at least one tonality indicating value for at least one spectrum line or for at least one group of spectral lines, wherein the control device is configured to modify the dead-zone for the at least one spectrum line or the at least one group of spectrum lines depending on the respective tonality indicating value. | 01-28-2016 |
20160050420 | APPARATUS AND METHOD FOR GENERATING AN ENCODED SIGNAL OR FOR DECODING AN ENCODED AUDIO SIGNAL USING A MULTI OVERLAP PORTION - An apparatus for generating an encoded signal includes: a window sequence controller for generating a window sequence information for windowing an audio or image signal, the window sequence information indicating a first window for generating a first frame of spectral values, a second window function and at least one third window function for generating a second frame of spectral values, wherein the first window function, the second window function and the one or more third window functions overlap within a multi-overlap region; a preprocessor for windowing a second block of samples corresponding to the second window function and the at least one third window functions using an auxiliary window function to acquire a second block of windowed samples, a spectrum converter for applying an aliasing-introducing transform; and a processor for processing the first frame and the second frame to acquire encoded frames of the audio or image signal. | 02-18-2016 |
20160078875 | APPARATUS AND METHOD FOR ENCODING OR DECODING AN AUDIO SIGNAL USING A TRANSIENT-LOCATION DEPENDENT OVERLAP - An apparatus for encoding an audio or image signal, includes: a controllable windower for windowing the audio or image signal to provide the sequence of blocks of windowed samples; a converter for converting the sequence of blocks of windowed samples into a spectral representation including a sequence of frames of spectral values; a transient location detector for identifying a location of a transient within a transient look-ahead region of a frame; and a controller for controlling the controllable windower to apply a specific window having a specified overlap length to the audio or image signal in response to an identified location of the transient, wherein the controller is configured to select the specific window from a group of at least three windows, wherein the specific window is selected based on the transient location. | 03-17-2016 |
20160104487 | APPARATUS AND METHOD REALIZING A FADING OF AN MDCT SPECTRUM TO WHITE NOISE PRIOR TO FDNS APPLICATION - An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal includes a receiving interface for receiving one or more frames comprising information on a plurality of audio signal samples of an audio signal spectrum of the encoded audio signal, and a processor for generating the reconstructed audio signal. The processor is configured to generate the reconstructed audio signal by fading a modified spectrum to a target spectrum, if a current frame is not received by the receiving interface or if the current frame is received by the receiving interface but is corrupted, wherein the modified spectrum includes a plurality of modified signal samples, wherein, for each of the modified signal samples of the modified spectrum, an absolute value of the modified signal sample is equal to an absolute value of one of the audio signal samples of the audio signal spectrum. | 04-14-2016 |
20160104488 | APPARATUS AND METHOD FOR IMPROVED SIGNAL FADE OUT FOR SWITCHED AUDIO CODING SYSTEMS DURING ERROR CONCEALMENT - An apparatus for decoding an audio signal includes a receiving interface, wherein the receiving interface is configured to receive a first frame and a second frame. Moreover, the apparatus includes a noise level tracing unit for determining noise level information being represented in a tracing domain. Furthermore, the apparatus includes a first reconstruction unit for reconstructing a third audio signal portion of the audio signal depending on the noise level information and a second reconstruction unit for reconstructing a fourth audio signal portion depending on noise level information being represented in the second reconstruction domain. | 04-14-2016 |
20160104489 | APPARATUS AND METHOD REALIZING IMPROVED CONCEPTS FOR TCX LTP - An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided. The apparatus includes a receiving interface, a delay buffer and a sample processor for processing the selected audio signal samples to obtain reconstructed audio signal samples of the reconstructed audio signal. The sample selector is configured to select, if a current frame is received by the receiving interface and if the current frame being received by the receiving interface is not corrupted, the plurality of selected audio signal samples from the audio signal samples being stored in the delay buffer depending on a pitch lag information being included by the current frame. | 04-14-2016 |
20160104490 | METHOD AND APPARATAUS FOR OBTAINING SPECTRUM COEFFICIENTS FOR A REPLACEMENT FRAME OF AN AUDIO SIGNAL, AUDIO DECODER, AUDIO RECEIVER, AND SYSTEM FOR TRANSMITTING AUDIO SIGNALS - An approach is described that obtains spectrum coefficients for a replacement frame of an audio signal. A tonal component of a spectrum of an audio signal is detected based on a peak that exists in the spectra of frames preceding a replacement frame. For the tonal component of the spectrum a spectrum coefficients for the peak and its surrounding in the spectrum of the replacement frame is predicted, and for the non-tonal component of the spectrum a non-predicted spectrum coefficient for the replacement frame or a corresponding spectrum coefficient of a frame preceding the replacement frame is used. | 04-14-2016 |
20160104497 | APPARATUS AND METHOD FOR GENERATING AN ADAPTIVE SPECTRAL SHAPE OF COMFORT NOISE - An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided, having: a receiving interface for receiving one or more frames, a coefficient generator, and a signal reconstructor. The coefficient generator is configured to determine one or more first audio signal coefficients, and one or more noise coefficients. Moreover, the coefficient generator is configured to generate one or more second audio signal coefficients, depending on the one or more first audio signal coefficients and depending on the one or more noise coefficients. The audio signal reconstructor is configured to reconstruct a first portion of the reconstructed audio signal depending on the one or more first audio signal coefficients and the audio signal reconstructor is configured to reconstruct a second portion of the reconstructed audio signal depending on the one or more second audio signal coefficients, if the current frame is not received by the receiving interface or if the current frame being received by the receiving interface is corrupted. | 04-14-2016 |
20160111094 | APPARATUS AND METHOD FOR IMPROVED CONCEALMENT OF THE ADAPTIVE CODEBOOK IN A CELP-LIKE CONCEALMENT EMPLOYING IMPROVED PULSE RESYNCHRONIZATION - An apparatus for reconstructing a frame including a speech signal as a reconstructed frame is provided, the apparatus including a determination unit and a frame reconstructor being configured to reconstruct the reconstructed frame, such that the reconstructed frame completely or partially includes the first reconstructed pitch cycle, such that the reconstructed frame completely or partially includes a second reconstructed pitch cycle, and such that the number of samples of the first reconstructed pitch cycle differs from a number of samples of the second reconstructed pitch cycle. | 04-21-2016 |
Patent application number | Description | Published |
20090083110 | FORMAL MODEL FOR BUSINESS PROCESSES - Various embodiments described herein provide one or more of systems, methods, and software for formal modeling of business processes. Some embodiments provide a formal model for business processes that allows for expressive querying and reasoning over process models. Some such models provide mechanisms for rich descriptions of processes from different workflow perspectives that may allow automated process verification, simulation, execution, and querying in the process space. Some embodiments include receiving a mapping of at least a portion of a process and determining an order of tasks of the process as a function of π-calculus formulas associated with each type of the tasks of the process map. The ordered tasks may then be translated into a process modeling language representation of the at least a portion of the process. | 03-26-2009 |
20090216731 | Enhanced Process Query Framework - An enhanced process query framework, including receiving a user input defining behavioral and static aspects of a target process artifact, and automatically defining a query specification including an axiom component expressing the static aspect using a logical expression, and a process definition component expressing the behavioral aspect using ontologized π-calculus. The process further includes querying a process artifact library using the automatically defined query specification, and outputting a candidate process artifact matching the defined behavioral and static aspects, based on querying the process artifact library. | 08-27-2009 |
20110029947 | SYSTEMS AND METHODS FOR INTEGRATING PROCESS PERSPECTIVES AND ABSTRACTION LEVELS INTO PROCESS MODELING - Methods and systems for integrating process perspectives and abstraction levels into business process modeling are described. In one example embodiment, modeling business processes for an enterprise can include selecting a segmented view of an enterprise meta-model. The segmented view is associated with a business process to be modeled. The enterprise meta-model is a machine-readable representation of business rules and policies for the enterprise. A business process model is created using a set of visual modeling tools, which are limited by the segmented view. A business policy having some relevance to the process being modeled can be selected for annotation to the business process. Once completed, the business process model is transformed into a machine-readable representation and stored in a repository. | 02-03-2011 |
Patent application number | Description | Published |
20100211118 | BONE SCREW AND METHOD OF MANUFACTURING SAME - The invention relates to a self-tapping bone screw, in particular for use as a compression screw or a locking screw for an implant. The bone screw has screw shank, which has a front tip, a cutting region, an intermediate region and a rear head region. In a transition region comprising mutually adjoining parts of the cutting region and the intermediate region the root diameter of the screw shank in the cutting region is greater than the root diameter of the screw shank in the intermediate region, and the outside diameter of the screw shank is constant. | 08-19-2010 |
20140012335 | BONE SCREW AND METHOD OF MANUFACTURING SAME - Disclosed is a self-tapping bone screw, in particular for use as a compression screw or a locking screw for an implant. The bone screw has screw shank, which has a front tip, a cutting region, an intermediate region, and a rear head region. In a transition region including mutually adjoining parts of the cutting region and the intermediate region, the root diameter of the screw shank in the cutting region is greater than the root diameter of the screw shank in the intermediate region, and the outside diameter of the screw shank is constant. | 01-09-2014 |