Patent application number | Description | Published |
20150240682 | SYSTEMS AND METHODS TO MITIGATE NOx AND HC EMISSIONS - Systems and methods are provided for managing low temperature NO | 08-27-2015 |
20150241399 | SYSTEMS AND METHODS FOR DETERMINING COMBUSTION PROPERTIES OF WELLHEAD GAS - Disclosed are methods, systems, and computer-readable mediums for determining combustion properties of wellhead gas. A methane concentration of a gas mixture is measured. A non-methane hydrocarbon concentration of the gas mixture is measured. An inert concentration of the gas mixture is calculated. A first surrogate for the non-methane hydrocarbon concentration is selected, where the first surrogate is selected as propane if the methane concentration is greater than a first threshold, and where the first surrogate is selected as pentane if the methane concentration is less than or equal to the first threshold. A methane number of the gas mixture is determined, where the methane number is based on the methane concentration, the first surrogate, and the inert concentration. | 08-27-2015 |
20150275730 | SYSTEMS AND METHODS TO REDUCE REDUCTANT CONSUMPTION IN EXHAUST AFTERTREAMENT SYSTEMS - Systems, apparatus and methods are provided for reducing reductant consumption in an exhaust aftertreatment system that includes a first SCR device and a downstream second SCR device, a first reductant injector upstream of the first SCR device, and a second reductant injector between the first and second SCR devices. NOx conversion occurs with reductant injection by the first reductant injector to the first SCR device in a first temperature range and with reductant injection by the second reductant injector to the second SCR device when the temperature of the first SCR device is above a reductant oxidation conversion threshold. | 10-01-2015 |
Patent application number | Description | Published |
20140074183 | Spectral Contrast Enhancement in a Cochlear Implant Speech Processor - Among other things, enhancing spectral contrast for a cochlear implant listener includes detecting a time domain signal. A first transformation is applied to the detected time domain signal to convert the time domain signal to a frequency domain signal. A second transformation is applied to the frequency domain signal to express the frequency domain signal as a sum of two or more components. A sensitivity of the cochlear implant listener to detect modulation of each component is obtained. | 03-13-2014 |
20140243928 | COMPENSATION CURRENT OPTIMIZATION FOR COCHLEAR IMPLANT SYSTEMS - An exemplary system includes a sound processor configured to process one or more audio signals and an implantable cochlear stimulator configured to apply stimulation representative of the one or more audio signals to a patient via a plurality of electrodes. In some embodiments, the sound processor directs the implantable cochlear stimulator to 1) apply a main current to a first electrode included in the plurality of electrodes and associated with a first pitch, 2) concurrently apply, during the application of the main current, a compensation current to a second electrode included in the plurality of electrodes and associated with a second pitch that is lower than the first pitch, and 3) adjust the compensation current to result in a target pitch being presented to the patient, the target pitch being higher than the first pitch. | 08-28-2014 |
20140257431 | COMPENSATION CURRENT OPTIMIZATION FOR AUDITORY PROSTHESIS SYSTEMS - An exemplary system includes an implantable cochlear stimulator implanted within a patient, a short electrode array coupled to the implantable cochlear stimulator and having a plurality of electrodes disposed thereon, and a sound processor communicatively coupled to the implantable cochlear stimulator. The sound processor may direct the implantable cochlear stimulator to apply a main current to a first electrode included in the plurality of electrodes and associated with a first pitch, direct the implantable cochlear stimulator to concurrently apply, during the application of the main current, a compensation current to a second electrode included in the plurality of electrodes and associated with a second pitch, and optimize an amount of the compensation current to result in a target pitch being presented to the patient that is distanced from the first pitch in a pitch direction opposite a pitch direction of the second pitch in relation to the first pitch. | 09-11-2014 |
20140277276 | METHODS AND SYSTEMS FOR OPTIMIZING SPEECH AND MUSIC PERCEPTION BY A BILATERAL COCHLEAR IMPLANT PATIENT - An exemplary method of optimizing speech and music perception by a bilateral cochlear implant patient includes identifying a first ear of a bilateral cochlear implant patient as being relatively more suited for processing speech than a second ear of the patient, directing a first cochlear implant subsystem associated with the first ear to operate in accordance with a first sound processing program configured to enhance speech perception by the patient, and directing a second cochlear implant subsystem associated with the second ear to operate in accordance with a second sound processing program configured to enhance music perception by the patient. Corresponding methods and systems are also disclosed. | 09-18-2014 |
20140309712 | SYSTEMS AND METHODS FOR SYNCHRONIZING AN OPERATION OF A MIDDLE EAR ANALYZER AND A COCHLEAR IMPLANT SYSTEM - An exemplary system for synchronizing an operation of a middle ear analyzer and a cochlear implant system includes 1) a mapping facility configured to maintain mapping data representative of an association between a plurality of sound levels and a plurality of current levels and between a plurality of frequencies and a plurality of electrodes, 2) a detection facility configured to receive an acoustic signal transmitted by the middle ear analyzer and detect a sound level and a frequency of the acoustic signal, and 3) a processing facility configured to identify, based on the mapping data, a current level associated with the detected sound level and one or more electrodes associated with the detected frequency and direct the cochlear implant system to apply electrical stimulation having the identified current level to one or more stimulation sites within a patient by way of the identified one or more electrodes. | 10-16-2014 |
20140323905 | STAPEDIUS REFLEX MEASUREMENT SAFETY SYSTEMS AND METHODS - An exemplary stapedius reflex measurement safety system includes a stimulation management facility configured to direct a cochlear implant system to apply an electrical stimulus to an auditory pathway of a patient and a detection facility configured to determine that a change in acoustic immittance that occurs as the electrical stimulus is being applied by the cochlear implant system is likely representative of a rise time phase associated with an occurrence of a stapedius reflex within the patient. The stimulation management facility is further configured to direct, in response to the determination, the cochlear implant system to cease applying the electrical stimulus. | 10-30-2014 |
20140336725 | METHODS AND SYSTEMS FOR LOWERING A PITCH SENSATION AS PERCEIVED BY A COCHLEAR IMPLANT PATIENT - An exemplary method of lowering a pitch sensation as perceived by a cochlear implant patient includes 1) identifying a most apical electrode included in a plurality of electrodes disposed within a cochlea of the patient, 2) directing a cochlear implant communicatively coupled to the plurality of electrodes to apply one or more anodecathode biphasic stimulation pulses to the most apical electrode during a stimulation period, and 3) directing the cochlear implant to apply one or more cathode-anode biphasic stimulation pulses to one or more other electrodes included in the plurality of electrodes during the stimulation period. Corresponding methods and systems are also disclosed. | 11-13-2014 |
20150230030 | Spectral Contrast Enhancement in a Cochlear Implant Speech Processor - Among other things, enhancing spectral contrast for a cochlear implant listener includes detecting a time domain signal. A first transformation is applied to the detected time domain signal to convert the time domain signal to a frequency domain signal. A second transformation is applied to the frequency domain signal to express the frequency domain signal as a sum of two or more components. A sensitivity of the cochlear implant listener to detect modulation of each component is obtained. | 08-13-2015 |