| Patent application number | Description | Published |
|---|
| 20080240448 | Simulation of Acoustic Obstruction and Occlusion - Realistic simulation of acoustic obstruction/occlusion effects in virtual-reality software applications is achieved by specifying whether a type of filter function is low-pass or high-pass and a cut-off frequency and stop-band attenuation of the filter function. The stop-band attenuation can be specified merely qualitatively, for example as “weak”, “nominal”, or “strong”. As a complement or alternative, obstruction/occlusion can be specified in terms of obstruction objects, such as blocking objects, enclosure objects, surface objects, and medium objects. An obstruction object is specified in terms of one or more environmental parameters and corresponds to naturally occurring acoustically obstructive/occlusive objects, such as curtains, walls, forests, fields, etc. The two specification types—filter specification parameters and environmental parameters—may co-exist in the same implementation or one or the other of the interfaces can be used in a particular implementation. | 10-02-2008 |
| 20080273708 | Early Reflection Method for Enhanced Externalization - Scenes having at least one simulated sound source and simulated sound-reflecting objects are simulated by processing a direct-sound signal with at least one head-related transfer-function, thereby generating a simulated direct-sound signal, and generating simulated early-reflection signals from the simulated direct-sound signal, including simulating early reflections having incidence angles different from the incidence angle of the direct-sound signal. Externalization of the simulated sound source is enhanced. | 11-06-2008 |
| 20090172060 | FILTER ADAPTIVE FREQUENCY RESOLUTION - In signal processing using digital filtering the representation of a filter is adapted depending on the filter characteristics. If e.g. a digital filter is represented by filter coefficients for transform bands Nos. 0, 1, . . . , K in the frequency domain, a reduced digital filter having coefficients for combined transform bands, i.e. subsets of the transformed bands, Nos. 0, 1, . . . , L, is formed and only these coefficients are stored. When the actual filtering in the digital filter is to be performed, an actual digital filter is obtained by expanding the coefficients of the reduced digital filter according to a mapping table and then used instead of the original digital filter. | 07-02-2009 |
| 20090262947 | Apparatus and Method for Producing 3D Audio in Systems with Closely Spaced Speakers - An audio processing circuit includes a crosstalk cancellation circuit that is advantageously simplified for use in audio devices that have closely-spaced speakers. In particular, crosstalk filtering as implemented in the circuit assumes that the external head-related contralateral filters are time-delayed and attenuated versions of the external, head-related ipsilateral filters. With this assumption, the circuit's crosstalk filtering is configurable for varying audio characteristics, according to a small number of settable parameters. These parameters include configurable first and second attenuation parameters for cross-path signal attenuation, and configurable first and second delay parameters for cross-path delay. Optional sound normalization, if included, uses similar simplified parameterization. Further, in one or more embodiments, the audio processing circuit and method include or are associated with a defined table of parameters that are least-squares optimized solutions. The optimized parameter values provide wider listening sweet spots for a greater variety of listeners. | 10-22-2009 |
| 20100217585 | Method and Arrangement for Enhancing Spatial Audio Signals - In a method of enhancing spatial audio signals, receiving (S | 08-26-2010 |
| Patent application number | Description | Published |
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| 20080227206 | METHOD AND SYSTEM FOR DETERMINATION OF MOLECULAR INTERACTION PARAMETERS - A method of determining kinetic parameters for a reversible molecular interaction between a ligand immobilized to a solid support surface and a binding partner to the ligand in solution, comprises sequentially, without intermediate regeneration or renewal of the immobilized ligand, flowing a plurality of fluid volumes containing different known concentrations of the binding partner over the solid support surface, monitoring the momentary amount of binding partner bound to the solid support surface related to time and solution concentration of binding partner and collecting the binding data, and determining the kinetic parameters by globally fitting a predetermined kinetic model for the interaction between the binding partner and the immobilized ligand to the collected binding data, which model allows for mass transport limitation at the solid support surface. An analytical system for carrying out the method, a computer program, a computer program product and a computer system for performing the method are also disclosed. | 09-18-2008 |
| 20110152118 | METHOD AND SYSTEM FOR DETERMINATION OF MOLECULAR INTERACTION PARAMETERS - A method of determining kinetic parameters for a reversible molecular interaction between a ligand immobilized to a solid support surface and a binding partner to the ligand in solution, comprises sequentially, without intermediate regeneration or renewal of the immobilized ligand, flowing a plurality of fluid volumes containing different known concentrations of the binding partner over the solid support surface, monitoring the momentary amount of binding partner bound to the solid support surface related to time and solution concentration of binding partner and collecting the binding data, and determining the kinetic parameters by globally fitting a predetermined kinetic model for the interaction between the binding partner and the immobilized ligand to the collected binding data, which model allows for mass transport limitation at the solid support surface. An analytical system for carrying out the method, a computer program, a computer program product and a computer system for performing the method are also disclosed. | 06-23-2011 |
| 20110152120 | METHOD OF CHARACTERIZING ANTIBODIES - A method of characterizing a population of antibodies to an antigen comprises contacting a sensor surface having the antigen immobilized thereto with a sample containing the antibody population to bind antibodies to the surface, and detecting dissociation of antibodies from the sensor surface during a dissociation phase when sample no longer contacts the surface. Based on the dissociation behaviour, the antibody population is characterized in terms of subpopulations of more and less stable antibodies, respectively. The method may be used to determine the immunogenicity of drug by monitoring the appearance of anti-drug antibodies in a patient over time, and determining any shift in proportions between more stable and less stable antibodies. | 06-23-2011 |
