Patent application number | Description | Published |
20100067709 | Loudness Measurement with Spectral Modifications - The perceived loudness of an audio signal is measured by modifying a spectral representation of an audio signal as a function of a reference spectral shape so that the spectral representation of the audio signal conforms more closely to the reference spectral shape, and determining the perceived loudness of the modified spectral representation of the audio signal. | 03-18-2010 |
20100198378 | Audio Processing Using Auditory Scene Analysis and Spectral Skewness - A method for controlling the loudness of auditory events in an audio signal. In an embodiment, the method includes weighting the auditory events (an auditory event having a spectrum and a loudness), using skewness in the spectra and controlling loudness of the auditory events, using the weights. Various embodiments of the invention are as follows: The weighting being proportionate to the measure of skewness in the spectra; the measure of skewness is a measure of smoothed skewness; the weighting is insensitive to amplitude of the audio signal; the weighting is insensitive to power; the weighting is insensitive to loudness; and any relationship between signal measure and absolute reproduction level is not known at the time of weighting; the weighting includes weighting auditory-event-boundary importance, using skewness in the spectra. | 08-05-2010 |
20110274281 | Method for Determining Inverse Filter from Critically Banded Impulse Response Data - A method for determining an inverse filter for altering the frequency response of a loudspeaker so that with the inverse filter applied in the loudspeaker's signal path the inverse-filtered loudspeaker output has a target frequency response, and optionally also applying the inverse filter in the signal path, and a system configured (e.g., a general or special purpose processor programmed and configured) to determine an inverse filter. In some embodiments, the inverse filter corrects the magnitude of the loudspeaker's output. In other embodiments, the inverse filter corrects both the magnitude and phase of the loudspeaker's output. In some embodiments, the inverse filter is determined in the frequency domain by applying eigenfilter theory or minimizing a mean square error expression by solving a linear equation system. | 11-10-2011 |
20120155659 | Audio Gain Control Using Specific-Loudness-Based Auditory Event Detection - In one disclosed aspect, dynamic gain modification s are applied to an audio signal at least partly in response to auditory events and/or the degree of change in signal characteristics associated with said auditory event boundaries. In another aspect, an audio signal is divided into auditory events by comparing the difference in specific loudness between successive time blocks of the audio signal. | 06-21-2012 |
20150146873 | Rendering and Playback of Spatial Audio Using Channel-Based Audio Systems - Embodiments are described for a method and system of rendering and playing back spatial audio content using a channel-based format. Spatial audio content that is played back through legacy channel-based equipment is transformed into the appropriate channel-based format resulting in the loss of certain positional information within the audio objects and positional metadata comprising the spatial audio content. To retain this information for use in spatial audio equipment even after the audio content is rendered as channel-based audio, certain metadata generated by the spatial audio processor is incorporated into the channel-based data. The channel-based audio can then be sent to a channel-based audio decoder or a spatial audio decoder. The spatial audio decoder processes the metadata to recover at least some positional information that was lost during the down-mix operation by upmixing the channel-based audio content back to the spatial audio content for optimal playback in a spatial audio environment. | 05-28-2015 |
20150223002 | System for Rendering and Playback of Object Based Audio in Various Listening Environments - Embodiments are described for a system of rendering object-based audio content through a system that includes individually addressable drivers, including at least one driver that is configured to project sound waves toward one or more surfaces within a listening environment for reflection to a listening area within the listening environment; a renderer configured to receive and process audio streams and one or more metadata sets associated with each of the audio streams and specifying a playback location of a respective audio stream; and a playback system coupled to the renderer and configured to render the audio streams to a plurality of audio feeds corresponding to the array of audio drivers in accordance with the one or more metadata sets. | 08-06-2015 |
20150350804 | Reflected Sound Rendering for Object-Based Audio - Embodiments are described for rendering spatial audio content through a system that is configured to reflect audio off of one or more surfaces of a listening environment. The system includes an array of audio drivers distributed around a room, wherein at least one driver of the array of drivers is configured to project sound waves toward one or more surfaces of the listening environment for reflection to a listening area within the listening environment and a renderer configured to receive and process audio streams and one or more metadata sets that are associated with each of the audio streams and that specify a playback location in the listening environment. | 12-03-2015 |
Patent application number | Description | Published |
20120063614 | AUDIO SIGNAL DYNAMIC EQUALIZATION PROCESSING CONTROL - Apparatuses for and methods of carrying out dynamic equalization processing of an audio signal, and apparatuses for and methods of controlling such equalization processing of the audio signal to dynamically adjust the time-varying spectrum of an audio signal to more closely match a user specified target time-invariant perceived audio signal spectrum while preserving the original dynamic range of the audio signal. The dynamic equalization is according to a user-defined spectral profile specified by a control interface that allows a user to define, create, modify and/or apply the user-defined spectral profile. | 03-15-2012 |
20120063615 | EQUALIZATION PROFILES FOR DYNAMIC EQUALIZATION OF AUDIO DATA - Apparatuses for and methods of carrying out dynamic equalization processing of an audio signal, and apparatuses for and methods of controlling such equalization processing of the audio signal to dynamically adjust the time-varying spectrum of an audio signal to more closely match a user specified target time-invariant perceived audio signal spectrum while preserving the original dynamic range of the audio signal. The dynamic equalization is carried out according to a user-defined spectral profile specified by a control interface that allows a user to define, create, modify and/or apply the user-defined spectral profile. | 03-15-2012 |
20120078402 | UPGRADEABLE ENGINE FRAMEWORK FOR AUDIO AND VIDEO - An audio/video (A/V) system includes an audio/video (A/V) component configured to generate audio or video data. The A/V system includes one or more processing devices configured to implement an audio or video processing engine to process the audio or video data to generate one or more different domain representations of the audio or video data. The A/V system includes one or more audio or video processing applications that are each configured to access one or more of the different domain representations of the audio or video data, and to perform audio or video processing on the one or more accessed domain representations of the audio or video data. Each of the one or more processing applications access and process the domain representations independently of each other. | 03-29-2012 |
20120092555 | HIERARCHY AND PROCESSING ORDER CONTROL OF DOWNLOADABLE AND UPGRADEABLE MEDIA PROCESSING APPLICATIONS - A method for an audio/video (A/V) system includes accessing processing modules for downloadable applications. Each downloadable application can have at least one processing module and data for a graphical user interface (GUI), and each processing module can be configured to interact with an upgradable engine to adjust a performance or a setting of an audio and video (A/V) equipment. The method includes arranging an order of two or more of the processing modules in a processing chain to share processing resources, to reduce a processing requirement of the A/V equipment, or to enhance a level of performance of the A/V equipment. | 04-19-2012 |
20120096353 | USER-SPECIFIC FEATURES FOR AN UPGRADEABLE MEDIA KERNEL AND ENGINE - An audio/video (A/V) system includes an audio/video (A/V) component configured to generate audio or video data. The A/V system includes one or more processing devices, and one or more storage devices storing instructions that, when executed by the one or more processing devices, cause the one or more processing devices to implement one or more audio or video processing applications for the A/V system. Each of the applications can include a processing module and data for a graphical user interface (GUI) for presentation on the A/V system. The applications can be configured to adjust a performance or a setting of the A/V equipment. The A/V system includes an audio or video processing engine configured to interact with the processing modules for the applications, where the audio or video processing engine is configured to share processing resources among two or more of the processing modules. | 04-19-2012 |
20120106747 | System and Method for Automatic Selection of Audio Configuration Settings - In one embodiment the present invention includes a circuit for automatically adjusting an output of an audio device. The circuit includes a memory circuit, a detector circuit, a control circuit, and an output circuit. The memory circuit stores configuration information. The detector circuit detects environment information related to an environment in which the apparatus is present. The control circuit selects selected configuration information from the memory circuit according to the environment information detected by the detector circuit. The output circuit receives an input audio signal and the selected configuration information, modifies the input audio signal according to the selected configuration information, and generates an output audio signal corresponding to the input audio signal as modified according to the selected configuration information. | 05-03-2012 |
20130013096 | Techniques for Distortion Reducing Multi-Band Compressor with Timbre Preservation - Distortion reducing multi-band compressor with timbre preservation is provided. Timbre preservation is achieved by determining a time-varying threshold in each of a plurality frequency bands as a function of a respective fixed threshold for the frequency band and, at least in part, an audio signal level and a fixed threshold outside such frequency band. If a particular frequency band receives significant gain reduction due to being above or approaching its fixed threshold, then a time-varying threshold of one or more other frequency bands are also decreased to receive some gain reduction. In a specific embodiment, time-varying thresholds can be computed from an average difference of the audio input signal in each frequency band and its respective fixed threshold. | 01-10-2013 |
20130083939 | METHOD AND APPARATUS FOR REDUCING THE EFFECT OF ENVIRONMENTAL NOISE ON LISTENERS - A method and apparatus for enhancing a desired audio signal for delivery through an electroacoustic channel include obtaining a noise estimate attributable to an external disturbance, applying the noise estimate to a dynamic noise compensation (DNC) process to thereby condition the desired audio signal as a function of the spectral characteristics of the noise estimate, applying the noise estimate to an adaptive equalization (AEQ) process to thereby condition the desired audio signal as a function of the electroacoustic response of the electroacoustic channel, and applying the noise estimate to an active noise cancellation (ANC) process configured to generate anti-noise for delivery into the electroacoustic channel. | 04-04-2013 |
20130243222 | Audio Control Using Auditory Event Detection - In one disclosed aspect, modifications are applied to an audio signal at least partly in response to auditory events. In another aspect, an input channel is divided into auditory events by detecting changes in a measurable characteristic of the input signal. | 09-19-2013 |
20140211946 | Loudness Modification of Multichannel Audio Signals - Scaling, by a desired amount s | 07-31-2014 |
20150245157 | Virtual Rendering of Object-Based Audio - Embodiments are described for a system for virtual rendering of object based audio through binaural rendering of each object followed by panning of the resulting stereo binaural signal between a plurality of cross-talk cancelation circuits feeding a corresponding plurality of speaker pairs. In comparison to prior art virtual rendering utilizing a single pair of speakers, the described embodiments improve the spatial impression for both listeners inside and outside of the cross-talk canceller sweet spot. Also described is an improved equalization technique for a crosstalk canceller that is computed from both the crosstalk canceller filters and the binaural filters and applied to a monophonic audio signal being virtualized. The described techniques improve timbre for listeners outside of the sweet-spot as well as a smaller timbre shift when switching from standard rendering to virtual rendering. | 08-27-2015 |
20150270819 | Techniques for Distortion Reducing Multi-Band Compressor with Timbre Preservation - Distortion reducing multi-band compressor with timbre preservation is provided. Timbre preservation is achieved by determining a time-varying threshold in each of a plurality frequency bands as a function of a respective fixed threshold for the frequency band and, at least in part, an audio signal level and a fixed threshold outside such frequency band. If a particular frequency band receives significant gain reduction due to being above or approaching its fixed threshold, then a time-varying threshold of one or more other frequency bands are also decreased to receive some gain reduction. In a specific embodiment, time-varying thresholds can be computed from an average difference of the audio input signal in each frequency band and its respective fixed threshold. | 09-24-2015 |
20150304791 | VIRTUAL HEIGHT FILTER FOR REFLECTED SOUND RENDERING USING UPWARD FIRING DRIVERS - Embodiments are directed to speakers and circuits that reflect sound off a ceiling to a listening location at a distance from a speaker. The reflected sound provides height cues to reproduce audio objects that have overhead audio components. The speaker comprises upward firing drivers to reflect sound off of the upper surface and represents a virtual height speaker. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The virtual height filter may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the upward-firing driver. | 10-22-2015 |
20150332680 | Object Clustering for Rendering Object-Based Audio Content Based on Perceptual Criteria - Embodiments are directed a method of rendering object-based audio comprising determining an initial spatial position of objects having object audio data and associated metadata, determining a perceptual importance of the objects, and grouping the audio objects into a number of clusters based on the determined perceptual importance of the objects, such that a spatial error caused by moving an object from an initial spatial position to a second spatial position in a cluster is minimized for objects with a relatively high perceptual importance. The perceptual importance is based at least in part by a partial loudness of an object and content semantics of the object. | 11-19-2015 |
20160072467 | Frequency Band Compression With Dynamic Thresholds - Disclosed are examples of systems, apparatus, methods and computer-readable storage media for dynamically adjusting thresholds of a compressor. An input audio signal having a number of frequency band components is processed. Time-varying thresholds can be determined. A compressor performs, on each frequency band component, a compression operation having a corresponding time-varying threshold to produce gains. Each gain is applied to a delayed corresponding frequency band component to produce processed band components, which are summed to produce an output signal. In some implementations, a time-varying estimate of a perceived spectrum of the output signal and a time-varying estimate of a distortion spectrum induced by the perceived spectrum estimate are determined, for example, using a distortion audibility model. An audibility measure of the distortion spectrum estimate in the presence of the perceived spectrum estimate can be predicted and used to adjust the time-varying thresholds. | 03-10-2016 |
20160078879 | Apparatuses and Methods for Audio Classifying and Processing - Apparatus and methods for audio classifying and processing are disclosed. In one embodiment, an audio processing apparatus includes an audio classifier for classifying an audio signal into at least one audio type in real time; an audio improving device for improving experience of audience; and an adjusting unit for adjusting at least one parameter of the audio improving device in a continuous manner based on the confidence value of the at least one audio type. | 03-17-2016 |
Patent application number | Description | Published |
20080248522 | HIGH-PRESSURE INCLUSION BODY SOLUBILIZATION AND PROTEASE CLIPPING OF RECOMBINANT FUSION PROTEINS - Described herein are methods for the solubilization and proteolytic cleavage of fusion protein aggregates, including autocatalytic fusion proteins, at pressures greater than atmospheric pressure to yield soluble target polypeptides. | 10-09-2008 |
20080249286 | HIGH-PRESSURE REFOLDING OF PROTEINS IN THE PRESENCE OF BINDING PARTNERS - Methods for producing biologically active protein from aggregated and/or denatured proteins which comprise subjecting the protein to high hydrostatic pressure in the presence of a ligand or specific binding agent are disclosed. The ligand can be a macromolecule, such as another protein, a nucleic acid, or other macromolecules, or the ligand can be a small organic molecule. | 10-09-2008 |
20090076247 | HIGH PRESSURE REFOLDING OF MONOCLONAL ANTIBODY AGGREGATES - Methods for refolding antibodies, particularly monoclonal antibodies, from aggregated and/or denatured preparations by subjecting the antibody preparation to high hydrostatic pressure are provided. Refolded preparations of antibodies produced by the methods described herein are also provided. | 03-19-2009 |
20090208453 | High pressure treatment of aggregated interferons - High pressure to treat aggregated interferons, particularly recombinant human interferon-β, to reduce the aggregate content of interferon material. Highly pure, soluble monomeric recombinant interferon-β is prepared in representative embodiments. Multiple strategies may be used in combination that make nonglycosylated IFN-β more amenable to high pressure treatment. It has been found that refolding yields of high pressure treatment can be significantly improved by use of a combination of strategies, including, or example a pre-treatment of the IFN-β that involves solubilizing and then precipitating the protein. This pre-treatment is particularly effective with respect to recombinant IFN-β inclusion bodies recovered from host cells such as | 08-20-2009 |
20090215998 | DEVICES AND METHODS FOR HIGH-PRESSURE REFOLDING OF PROTEINS - Disclosed are devices for holding samples, particularly liquid samples, during high-pressure treatment. The devices enable a variety of functions, such as high-throughput screening of samples in multi-compartment device embodiments, and adjustment of solution conditions during high-pressure treatment. The devices are designed to maintain integrity during the high-pressure conditions, and are optionally substantially impermeable to oxygen. | 08-27-2009 |
20110070219 | HIGH PRESSURE PROTEIN CRYSTALLIZATION - The present disclosure provides an effective method for the crystallization of proteins at high pressure. A preferential excluding agent, and optionally other reagents may be incorporated into the method. The method is applicable to substantially all proteins. | 03-24-2011 |
20130058895 | High Pressure Treatment of Aggregated Interferons - Methods are provided using high pressure to treat aggregated interferons, to reduce the aggregate content of interferon material. In particular, recombinant human interferon-β may be so treated. Multiple strategies may be used in combination to make nonglycosylated IFN-β more amenable to high pressure treatment. When coupled with purification techniques, these strategies singly or in combination provide a low aggregate or substantially aggregate free, biologically active solution. In certain aspects, pharmaceutical compositions containing nonglycosylated interferon having less than about 5 weight percent of protein aggregation are provided. | 03-07-2013 |
20160002285 | THERAPEUTIC PROTEIN COMPOSITIONS HAVING REDUCED IMMUNOGENICITY AND/OR IMPROVED EFFICACY - The present invention provides methods for reducing and/or evaluating the immunogenic potential of a therapeutic protein preparation. The present invention further provides pharmaceutical compositions of therapeutic proteins and methods of treatment with the same, the compositions having low immunogenic potential and/or improved efficacy. The invention achieves these goals by evaluating therapeutic protein preparations for subvisible protein particulates, which can contribute significantly to the overall immunogenic potential of the protein preparation. Further, by maintaining the content of such subvisible protein particulates to below an immunogenic threshold level, the resulting pharmaceutical composition is less likely to result in a loss of tolerance (e.g., upon repeated administration), thereby improving both the safety and efficacy profile of the therapeutic. | 01-07-2016 |