Abstract: An apparatus for processing an audio signal includes an audio signal analyzer and a filter. The audio signal analyzer is configured to analyze an audio signal to determine a plurality of noise suppression filter values for a plurality of bands of the audio signal, wherein the analyzer is configured to determine a noise suppression filter value so that a noise suppression filter value is greater than or equal to a minimum noise suppression filter value and so that the minimum noise suppression value depends on a characteristic of the audio signal. The filter is configured for filtering the audio signal, wherein the filter is adjusted based on the noise suppression filter values.

Abstract: A microscope-autofocus device for feedback-controlling a focal position of an imaging system of a microscope apparatus, wherein the imaging system includes a microscope objective, a monitoring beam source for creating a monitoring beam, a detector device for detecting a drift variation of an axial objective distance between the microscope objective and a sample by sensing the monitoring beam directed through the imaging system to the sample and reflected by the sample, and a feedback loop device for controlling the imaging system in dependency on the detected objective distance variation of the microscope objective.

Abstract: An apparatus for processing an audio signal includes an audio signal analyzer and a filter. The audio signal analyzer is configured to analyze an audio signal to determine a plurality of noise suppression filter values for a plurality of bands of the audio signal, wherein the analyzer is configured to determine a noise suppression filter value so that a noise suppression filter value is greater than or equal to a minimum noise suppression filter value and so that the minimum noise suppression value depends on a characteristic of the audio signal. The filter is configured for filtering the audio signal, wherein the filter is adjusted based on the noise suppression filter values.

Abstract: An apparatus for processing an audio signal includes an audio signal analyzer and a filter. The audio signal analyzer is configured to analyze an audio signal to determine a plurality of noise suppression filter values for a plurality of bands of the audio signal, wherein the analyzer is configured to determine a noise suppression filter value so that a noise suppression filter value is greater than or equal to a minimum noise suppression filter value and so that the minimum noise suppression value depends on a characteristic of the audio signal. The filter is configured for filtering the audio signal, wherein the filter is adjusted based on the noise suppression filter values.

Abstract: A microscope-autofocus device for feedback-controlling a focal position of an imaging system of a microscope apparatus, wherein the imaging system includes a microscope objective, a monitoring beam source for creating a monitoring beam, a detector device for detecting a drift variation of an axial objective distance between the microscope objective and a sample by sensing the monitoring beam directed through the imaging system to the sample and reflected by the sample, and a feedback loop device for controlling the imaging system in dependency on the detected objective distance variation of the microscope objective.

Abstract: An apparatus for multichannel interference cancellation in a received audio signal including two or more received audio channels to obtain a modified audio signal including two or more modified audio channels is provided. The apparatus includes a first filter unit being configured to generate a first estimation of a first interference signal depending on a reference signal. Moreover, the apparatus includes a first interference canceller being configured to generate a first modified audio channel of the two or more modified audio channels from a first received audio channel of the two or more received audio channels depending on the first estimation of the first interference signal. Furthermore, the apparatus includes a second filter unit being configured to generate a second estimation of a second interference signal depending on the first estimation of the first interference signal.

Abstract: An apparatus for processing an audio signal includes an audio signal analyzer and a filter. The audio signal analyzer is configured to analyze an audio signal to determine a plurality of noise suppression filter values for a plurality of bands of the audio signal, wherein the analyzer is configured to determine a noise suppression filter value so that a noise suppression filter value is greater than or equal to a minimum noise suppression filter value and so that the minimum noise suppression value depends on a characteristic of the audio signal. The filter is configured for filtering the audio signal, wherein the filter is adjusted based on the noise suppression filter values.