Abstract: A method for eliminating acoustic reverberation in an audio signal. First and second level measurements are performed on the audio signal. The first level measurement uses a first attack parameter and a first decay parameter to measure a first attack time and a first decay time. The second level measurement uses a second attack parameter and a second decay parameter to form a second attack time that is identical to the first attack time and a second decay time that is longer than the first decay time. A difference between the first and second level measurements is calculated. The difference and the second level measurement are used to estimate a reverberation interference level, and the first level measurement and the reverberation interference level are used to ascertain a gain parameter for the audio signal.

Abstract: A method of suppressing an acoustic reverberation in an audio signal includes providing an audio signal, carrying out a first level measurement of the audio signal and carrying out a second level measurement of the audio signal at least temporarily during the first level measurement. The first level measurement is carried out with a decay time and/or adjustment time that differs from a decay time or adjustment time of the second level measurement. An acoustic reverberation of the sound event in the audio signal is suppressed by attenuating the audio signal in response to a sound event in the audio signal. The attenuation is controlled as a function of a difference between the first level measurement and the second level measurement. A hearing device is also provided.

Abstract: A method for operating a hearing device. In the hearing device a first directional signal and a second directional signal are generated from an ambient sound signal. The first directional signal and the second directional signal are used to determine at a first response time a first adaptation coefficient for a first superposition of the first directional signal with the second directional signal for the purpose of noise suppression. It is intended here that the first directional signal and the second directional signal are used to determine at a second response time a second adaptation coefficient for a second superposition of the first directional signal with the second directional signal for the purpose of noise suppression. The first adaptation coefficient and the second adaptation coefficient are used to determine an output adaptation coefficient for forming an output signal by superposition of the first directional signal and the second directional signal.

Abstract: A method of suppressing an acoustic reverberation in an audio signal includes providing an audio signal, carrying out a first level measurement of the audio signal and carrying out a second level measurement of the audio signal at least temporarily during the first level measurement. The first level measurement is carried out with a decay time and/or adjustment time that differs from a decay time or adjustment time of the second level measurement. An acoustic reverberation of the sound event in the audio signal is suppressed by attenuating the audio signal in response to a sound event in the audio signal. The attenuation is controlled as a function of a difference between the first level measurement and the second level measurement. A hearing device is also provided.

Abstract: A method for reducing the latency period of a filter bank for filtering an audio signal. A large number of signal blocks in the time domain are formed from the audio signal, wherein for at least a plurality of the signal blocks in each instance a filter function is predetermined, at least one partial interval of the signal block is predetermined as a prediction period, signal components of the signal block in the at least one partial interval are estimated for the prediction period, and a predicted signal block is generated from the signal components estimated for the prediction period and from the signal components of the signal block outside the prediction period. The predicted signal block, filtered with the predetermined filter function, is transformed into the frequency domain to form a transformed signal block. Signal components of the transformed signal block are output for further processing.

Abstract: A method for operating a hearing device. In the hearing device a first directional signal and a second directional signal are generated from an ambient sound signal. The first directional signal and the second directional signal are used to determine at a first response time a first adaptation coefficient for a first superposition of the first directional signal with the second directional signal for the purpose of noise suppression. It is intended here that the first directional signal and the second directional signal are used to determine at a second response time a second adaptation coefficient for a second superposition of the first directional signal with the second directional signal for the purpose of noise suppression. The first adaptation coefficient and the second adaptation coefficient are used to determine an output adaptation coefficient for forming an output signal by superposition of the first directional signal and the second directional signal.

Abstract: A method for reducing the latency period of a filter bank for filtering an audio signal. A large number of signal blocks in the time domain are formed from the audio signal, wherein for at least a plurality of the signal blocks in each instance a filter function is predetermined, at least one partial interval of the signal block is predetermined as a prediction period, signal components of the signal block in the at least one partial interval are estimated for the prediction period, and a predicted signal block is generated from the signal components estimated for the prediction period and from the signal components of the signal block outside the prediction period. The predicted signal block, filtered with the predetermined filter function, is transformed into the frequency domain to form a transformed signal block. Signal components of the transformed signal block are output for further processing.

Abstract: Psychoacoustic boundary conditions are to be better taken into account in the amplification of input signals of a hearing apparatus. To this end, a channel-specific compression characteristic curve is predetermined in a number of spectrally-separated processing channels of the hearing apparatus, which defines a relationship between an input level and an output level in the respective processing channel of the hearing apparatus. A respective input signal portion is amplified in each processing channel as a function of a channel-specific operating compression characteristic curve. A channel-specific input level threshold is predefined here for each processing channel.

Abstract: The noise reduction for signals which can contain speech at least part of the time is to be improved. To this end a hearing apparatus and especially a hearing device with a first estimation device for estimating a first value of an input signal with a first estimation algorithm and a noise reduction device for reducing noise in the input signal are provided. A second estimation device, which is parameterized with the estimated first value, is used for estimating a second value of the input signal with a second estimation algorithm. The noise reduction device receives the estimated second value from the second estimation device for reducing the noise. The two-stage estimation method enables an adaptive estimation to be carried out which is always currently adapted to an input signal.

Abstract: The object is to improve the effect of a noise reduction algorithm for hearing apparatuses and in particular hearing aids. This is achieved by a method wherein the input signal is modeled by a wanted signal model and a noise signal model. In addition, a signal statistic of the input signal is recorded in a data logging unit. The wanted signal model and/or the noise signal model can now be changed as a function of said signal statistic. Finally the noise component of the input signal is reduced using the noise signal model and/or the wanted signal model. This means that the models used can be continuously adapted to the hearing apparatus user's current situation.

Abstract: A method for noise reduction in a hearing aid device is described, with a signal, which comprises a useful and an interference signal part, being processed in the hearing aid device and with the interference signal part being reduced to the benefit of the useful signal part and with the reduction of the interference signal part being carried out as a function of the input level of the signal, with the interference signal part being more heavily attenuated with a high input level than with a low input level.