Patent application number | Description | Published |
20140185846 | HEARING AID WITH IMPROVED LOCALIZATION - A hearing aid includes: a cue filter having an input that is provided with an output from the BTE sound input transducer; an adaptive feedback canceller configured to provide an output modelling a feedback path between the output transducer and the BTE sound input transducer, wherein the output modelling the feedback path is provided to a subtractor for subtraction of the output modelling the feedback path from the output of the BTE sound input transducer to obtain a difference, the subtractor outputting the difference to the cue filter; and a feedback and cue controller connected to the adaptive feedback canceller and the cue filter, wherein the feedback and cue controller is configured to control the cue filter to reduce a difference between an output of the ITE microphone and a combined output that is obtained using at least the cue filter. | 07-03-2014 |
20140185847 | HEARING AID WITH IMPROVED LOCALIZATION - A method of determining parameters of a BTE hearing aid having at least one ITE microphone and at least one BTE microphone, the method includes: determining Head-Related Transfer functions HRTF | 07-03-2014 |
20140185849 | HEARING AID WITH IMPROVED LOCALIZATION - A hearing aid includes: a feedback monitor connected to the adaptive feedback canceller and configured to monitor a state of feedback and having an output providing an indication of the state of feedback; and a cue controller connected to the feedback monitor and the at least one adaptive cue filter, and configured to control, in response to an output of the feedback monitor, the at least one adaptive cue filter so that the difference between the output of the at least one ITE microphone and the combined output of the at least one adaptive cue filter is reduced. | 07-03-2014 |
Patent application number | Description | Published |
20110064252 | HEARING AID WITH MEANS FOR DECORRELATING INPUT AND OUTPUT SIGNALS - A hearing aid includes a microphone for converting sound into an audio input signal, a hearing loss processor configured for processing the audio input signal or a signal derived from the audio input signal in accordance with a hearing loss of a user of the hearing aid, a synthesizer configured for generation of a synthesized signal based at least on a sound model and the audio input signal, the synthesizer comprising a noise generator configured for excitation of the sound model for generation of the synthesized signal including synthesized vowels, and a receiver for generating an output sound signal based at least on the synthesized signal. | 03-17-2011 |
20110064253 | HEARING AID WITH MEANS FOR ADAPTIVE FEEDBACK COMPENSATION - A hearing aid includes a microphone for converting sound into an audio input signal, a hearing loss processor, an adaptive feedback suppressor configured for generation of a feedback suppression signal by modelling a feedback signal path of the hearing aid, a subtractor coupled to an output of the adaptive feedback suppressor, wherein the subtractor is configured for subtracting the feedback suppression signal from the audio input signal, and outputting a feedback compensated audio signal to the hearing loss processor, and wherein the hearing loss processor is configured for processing the feedback compensated audio signal in accordance with a hearing loss of a user of the hearing aid, a synthesizer configured for generation of a synthesized signal based at least on a sound model and the audio input signal, and a receiver for generating an output sound signal based at least on the synthesized signal. | 03-17-2011 |
20110293124 | FITTING DEVICE AND A METHOD OF FITTING A HEARING DEVICE TO COMPENSATE FOR THE HEARING LOSS OF A USER; AND A HEARING DEVICE AND A METHOD OF REDUCING FEEDBACK IN A HEARING DEVICE - A fitting device for fitting a hearing device to compensate for a hearing loss of a user is disclosed, the hearing device comprising a receiver and a microphone, wherein a feedback path exists between the receiver and the microphone, wherein the hearing device further comprises an adaptive feedback canceller configured to reduce feedback, the adaptive feedback canceller comprising a fixed filter corresponding to an invariant portion of the feedback path, and an adaptive filter corresponding to a variant portion of the feedback path, the fitting device comprising a processor configured to determine the invariant portion of the feedback path, wherein the processor is configured to provide the fixed filter with information relating to the invariant portion of the feedback path independently of the user using the hearing device. | 12-01-2011 |
20130010972 | BINAURAL COMPRESSOR PRESERVING DIRECTIONAL CUES - A hearing aid system includes a first hearing aid configured to communicate with a second hearing aid, wherein the first hearing aid comprises a microphone and an ND converter for provision of a digital input signal in response to sound signals received at the microphone, a processor that is configured to process the digital input signal in accordance with a signal processing algorithm into a processed digital output signal, the processor including a compressor, a D/A converter and an output transducer for conversion of the processed digital output signal to an acoustic output signal, and a transceiver for data communication with the second hearing aid, wherein, a gain of the compressor of the first hearing aid is controlled by a first compressor control signal with a value that is substantially equal to a value of a second compressor control signal controlling a gain of a compressor in the second hearing aid, whereby a sense of direction is maintained. | 01-10-2013 |
20130010973 | WIRELESS BINAURAL COMPRESSOR - A binaural hearing aid system includes a first hearing aid and a second hearing aid, each of which comprising a processor that is configured to process the digital input signal in accordance with a signal processing algorithm into a processed digital output signal, the processor including a compressor for compensation of dynamic range hearing loss based on the signal level, wherein wireless data communication of signal parameter from one of the first and the second hearing aids is performed at a data transmission rate with a time period between consecutive transmissions of the signal parameter from the one of the first and second hearing aids that is longer than an attack and release time of at least one of the compressors. | 01-10-2013 |
20130170680 | HEARING AID WITH IMPROVED LOCALIZATION - A BTE hearing aid includes a BTE hearing aid housing, at least one BTE sound input transducer, a processor configured to generate a hearing loss compensated output signal, a sound signal transmission member for transmission of a signal from a sound output of the BTE hearing aid housing to an ear canal of a user at a second end of the sound signal transmission member, an earpiece configured to be inserted in the ear canal, an output transducer, and an ITE microphone housing accommodating at least one ITE microphone, wherein the ITE microphone housing is configured to be positioned in an outer ear, wherein the processor is further configured for processing an audio signal from the at least one ITE microphone and an audio signal from the at least one BTE sound input transducer in such a way that the hearing loss compensated output signal substantially preserves spatial cues. | 07-04-2013 |
20140112508 | FITTING DEVICE AND A METHOD OF FITTING A HEARING DEVICE TO COMPENSATE FOR THE HEARING LOSS OF A USER; AND A HEARING DEVICE AND A METHOD OF REDUCING FEEDBACK IN A HEARING DEVICE - A fitting device for fitting a hearing device to compensate for a hearing loss of a user is disclosed, the hearing device comprising a receiver and a microphone, wherein a feedback path exists between the receiver and the microphone, wherein the hearing device further comprises an adaptive feedback canceller configured to reduce feedback, the adaptive feedback canceller comprising a fixed filter corresponding to an invariant portion of the feedback path, and an adaptive filter corresponding to a variant portion of the feedback path, the fitting device comprising a processor configured to determine the invariant portion of the feedback path, wherein the processor is configured to provide the fixed filter with information relating to the invariant portion of the feedback path independently of the user using the hearing device. | 04-24-2014 |
Patent application number | Description | Published |
20090280029 | High Throughput Materials-Processing System - The present invention discloses a materials-processing system, which comprises an inputting subsystem, a processing apparatus coupled to the inputting subsystem and a collecting subsystem coupled to the processing apparatus. The inputting subsystem comprises three or more sample vessels, which can be connected to the processing apparatus. Since the processing system includes multiple sample vessels, which can be grouped into different groups so that each group contains two or more of the multiple sample vessels. High throughput materials transport can be realized by sequentially connecting different groups of sample vessels to the processing apparatus, thereby overcoming a limitation of the prior art that cannot continuously perform multiple batches of materials processing and improving material processing efficiency. | 11-12-2009 |
20090304557 | REACTION SYSTEM - A system for conducting one or more reactions is provided. The system includes one or more reaction chambers, a temperature controller and an insulator each thermally coupled to the reaction chambers, and a heat radiation shield. The insulator comprises a vacuum environment. The system is provided with the temperature controller, heat radiation shield and insulator such that the temperature of the reaction chambers can be accurately controlled, heat loss, gain and fluctuation of the reaction chambers can be minimized, and temperature uniformity of the reaction chambers can be ensured. | 12-10-2009 |
Patent application number | Description | Published |
20100003176 | PROCESS FOR PRETREATING ORGANIC EXTRACTANTS AND ITS PRODUCT AND APPLICATION - A process for pretreating organic extractants and its product and application in SX separation of rare earth. The pretreating method is that extractant and rare earth solution are mixed with powder or slurry of alkaline earth metal compound containing magnesium and/or calcium to realize pre-extraction, or the organic extractant are mixed with rare earth carbonate slurry to realize pre-extraction. When rare earth ion in aqueous phase is extracted into organic phase, the exchanged hydrogen ions enter into aqueous phase and dissolve the alkaline earth metal compound or the rare earth carbonate which helps to keep the acidity equilibrium of the system. The obtained organic extractant loaded with rare earth is used for unsaponificated SX separation of rare earth. | 01-07-2010 |
20110274597 | USE OF Mg(HCO3)2 AND/OR Ca(HCO3)2 AQUEOUS SOLUTION IN METAL EXTRACTIVE SEPARATION AND PURIFICATION - The application of aqueous solution of magnesium bicarbonate and/or calcium bicarbonate in the process of extraction separation and purification of metals is disclosed, wherein the aqueous solution of magnesium bicarbonate and/or calcium bicarbonate is used as an acidity balancing agent, in order to adjust the balancing pH value of the extraction separation process which uses an acidic organic extractant, improve the extraction capacity of organic phase, and increase the concentration of metal ions in the loaded organic phase. | 11-10-2011 |
20110280778 | METHOD OF PRECIPITATION OF METAL IONS - The present invention relates to a method of precipitation of metal ions. Mineral(s), oxide(s), hydroxide(s) of magnesium and/or calcium are adopted as raw materials, and the raw material(s) is processed through at least one step of calcination, slaking, or carbonization to produce aqueous solution(s) of magnesium bicarbonate and/or calcium bicarbonate, and then the solution(s) is used as precipitant(s) to deposit rare earth, such as nickel, cobalt, iron, aluminum, gallium, indium, manganese, cadmium, zirconium, hafnium, strontium, barium, copper and zinc ions. And at least one of metal carbonates, hydroxides or basic carbonates is obtained, or furthermore the obtained products are calcined to produce metal oxides. The invention takes the cheap calcium and/or magnesium minerals or their oxides, hydroxides with low purity as raw materials to instead common precipitants such as ammonium bicarbonate and sodium carbonate etc. The calcium, magnesium, carbon dioxide etc are efficiently and circularly used, and the environment pollution by ammonium-nitrogen wastewater, high concentration salts wastewater is avoided, and both of the discharge of greenhouse gas carbon dioxide and the production cost of metal are decreased. | 11-17-2011 |