摘要:
A method and circuit for signal amplification in digital hearing aids, in particular in hearing aids with automatic gain control (AGC). In the method there first ensues a digitization of an input signal from the signal path of the hearing aid, then a rectification of sampled values of the digitized input signal. Next a determination of gain values is allocated to the sampled values, after which there is a smoothing of the gain values. Finally, after previous allocation of the smoothed gain values to the sampled values, allocated values, reconverted to analog form, are outputted into the signal path of the hearing aid.
摘要:
In a method for processing data, in particular signal data in a programmable digital hearing aid, first a data memory is searched to locate a stored comparison input value corresponding with a current, incoming input data value E which satisfies a comparison condition. Subsequently the data memory is searched for a stored output value allocated in a predetermined manner now-identified to the stored input data value via a characteristic function. Subsequently the determined comparison output value is emitted as an output value, and the procedure is repeated for further incoming input data values. In a circuit for processing data, particularly signal data, in a programmable hearing aid, the incoming input data value is supplied via a data input/output unit of a processor to a comparison element for determining whether there exists a stored input value corresponding to the current input data value by satisfying a comparison condition. The circuit also includes a data base in which the allocated input and output values are stored.
摘要:
A digital hearing aid is employable for tinnitus therapy, as well as for retraining tinnitus therapy, in combination with correction of other hearing impairments of a user of the hearing aid. For this purpose, the hearing aid contains a signal processing chain, between a hearing aid input and a hearing aid output, which is responsible for producing a useful signal by acting on the input signal in a manner to correct the hearing impairment of a user of the hearing aid. The signal processing chain also includes an arrangement for generating a tinnitus therapy signal, which is combined in the signal processing chain with the useful signal, dependent on a mode of operation which has been selected or set.
摘要:
In a method for detecting and/or removing errors in the transmission and storage of data in a digital hearing device and a digital hearing device operating according to the method, an internal check of transmitted and stored data occurs within the hearing device itself. The digital hearing device has an input transducer, an output transducer, a processor and a program memory, with a checking element for internal checking of transmitted and stored data within the hearing device, being connected at least to the program memory and the processor.
摘要:
A digital hearing aid with a variable directional microphone characteristic, has a signal processing unit, an earphone and at least two microphones, with a sigma-delta converter as well as a delay element following immediately thereafter in at least one microphone signal path. In a method for the operation of such a digital hearing aid, an A/D conversion with the sigma-delta converter ensues in the signal path of at least one microphone and the resulting 1-bit signal is delayed.
摘要:
In a method and a hearing device for allowing processes arising in non-synchronous fashion relative to the execution of loaded programs for signal processing in a hearing device with digital signal processing to be taken into consideration at a time approximately contemporaneous with the occurrence of the non-synchronous process, first the occurrence of a non-synchronous process is detected, followed by an interruption of the execution of the loaded program or an avoidance of the starting of a new program. In a further step a classification of the non-synchronous process with respect to the process type and a decision is made as to whether the loaded program should be continued at a new program step or a suitable new program should be selected, depending on this decision, either a continuation of the loaded program takes place at a new program step, or a selection, loading and execution of a new program is undertaken.
摘要:
In a method for determining a parameter set for a hearing aid during the computerized setting of the hearing aid, a macro call is determined, the macro call is converted into at least one setting command according to a macro definition, and the parameter set is determined dependent on the at least one setting command. Such a method is high-performance and nonetheless flexible and easy to manipulate.
摘要:
The method for adjusting a hearing system to individual hearing needs and preferences of a specific hearing system user by means of a fitting system comprising a visual display comprises: a) presenting on the visual display a visualization (33) simultaneously visualizing for each of a group of data sets: whether or not the respective data set is accessible to a user of said fitting system; and for each device selected in said fitting system to be part of said hearing system: whether or not the respective device is accessible to a user of said fitting system; by b1) displaying on the visual display a graphics object (33a, 33b, . . . ) representing the respective data set or device, in case the respective data set and the respective device, respectively, is accessible to a user of said fitting system; and b2) not displaying on said visual display a graphics object (33a, 33b, . . . ) representing the respective data set or device, in case the respective data set and the respective device, respectively, is not accessible to a user of said fitting system.
摘要:
A hearing device has a microphone, a signal processor, an earphone and a number of externally accessible final control elements for setting audiological/acoustical parameters of the signal processor. An allocation stage is connected between the signal processor and the final control elements for allowing a number of combined and/or derived parameters to be simultaneously set by actuation of a single final control element.
摘要:
In a method and apparatus for producing constant sound pressure level in a hearing aid, a microphone, a receiver and a signal processing unit are provided. A switching unit produces constant sound pressure levels. The switching unit has an envelope generator for producing an envelope value of a signal value to be processed and a divider for calculating the ratio of the signal value and the envelope value as the signal to be output or further processed.