Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Friedrich-schiller-universitat Jena

Daniel Richter

Sascha Disch

Nikolaus Rettelbach

Max Neuendorf

Oliver Hellmuth

Jürgen Herre

Christian Uhle

Peter Prokein

Patrick Gampp

Julia Havenstein

Antonios Karampourniotis

Stefan Nolte

Bernd Herrmann

Malte Per Siems

Ria Krämer

Thorsten Albert Goebel

Wahaj Aslam

Christina Mittag

Agathe Deniau

A method and an apparatus for processing an object by generation of laser radiation as a collimated laser beam, influencing the intensity distribution and/or the phase progression over the cross section of the laser beam, splitting the laser beam into two partial beams, and deflection and focusing of the partial beams so that the partial beams are superimposed in a processing zone in the material of the object.

Method and device for machining by means of interfering laser radiation

What is described is an apparatus for post-processing an audio signal, having: a time-spectrum-converter for converting the audio signal into a spectral representation having a sequence of spectral frames; a prediction analyzer for calculating prediction filter data for a prediction over frequency within a spectral frame; a shaping filter controlled by the prediction filter data for shaping the spectral frame to enhance a transient portion within the spectral frame; and a spectrum-time-converter for converting a sequence of spectral frames having a shaped spectral frame into a time domain.

Apparatus and method for post-processing an audio signal using prediction based shaping

Apparatus for post-processing an audio signal, including: a converter for converting the audio signal into a time-frequency representation; a transient location estimator for estimating a location in time of a transient portion using the audio signal or the time-frequency representation; and a signal manipulator for manipulating the time-frequency representation, wherein the signal manipulator is configured to reduce or eliminate a pre-echo in the time-frequency representation at a location in time before the transient location or to perform a shaping of the time-frequency representation at the transient location to amplify an attack of the transient portion.

Apparatus for post-processing an audio signal using a transient location detection

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Ludwigsburg, Germany

Daniel Richter