Ulrich Kraemer
Fraunhofer Society
11 Papers
301 Citations
Ulrich Kraemer is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Audio signal & Speech coding. The author has an hindex of 10, co-authored 11 publications.
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Papers
Patent
Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic
Juergen Herre,Bernhard Grill,Markus Multrus,Stefan Bayer,Ulrich Kraemer,Jens Hirschfeld,Stefan Wabnik,Gerald Schuller +7 more
- 30 Jun 2006
TL;DR: In this article, a controller is connected for providing the time-varying control signal, which depends on the audio signal, and the controller is introduced to an encoding processor having different encoding algorithms adapted to a specific signal pattern.
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Patent
Audio signal synthesizer and audio signal encoder
Frederik Nagel,Sascha Disch,Nikolaus Rettelbach,Max Neuendorf,Bernhard Grill,Ulrich Kraemer,Stefan Wabnik +6 more
- 19 Jun 2009
TL;DR: In this article, a patch generator, a spectral converter, a raw signal processor and a combiner are adapted to select one of the at least two different patching algorithms in response to a control information for a first-time portion and the other-time-partitioning algorithm was selected to obtain the raw signal for the first and second-time portions.
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Patent
Low bitrate audio encoding/decoding scheme with common preprocessing
Bernhard Grill,Stefan Bayer,Guillaume Fuchs,Stefan Geyersberger,Ralf Geiger,Johannes Hilpert,Ulrich Kraemer,Jeremie Lecomte,Markus Multrus,Max Neuendorf,Harald Popp,Nikolaus Rettelbach,Frederik Nagel,Sascha Disch,Juergen Herre,Yoshikazu Yokotani,Stefan Wabnik,Gerald Schuller,Jens Hirschfeld +18 more
- 06 Jul 2009
TL;DR: An audio decoder comprises a spectral domain decoding branch, an LPC-domain decoding branch and one or more switches for switching between the branches and a common post processing stage for post-processing a time-domain audio signal for obtaining a post-processed audio signal.
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•Journal Article
A Guideline to Audio Codec Delay
TL;DR: This paper describes the delay sources and magnitude of the most common audio codecs and thus provides a guideline for the choice of themost suitable codec for a given application.
Patent
An apparatus and a method for generating bandwidth extension output data
Max Neuendorf,Bernhard Grill,Ulrich Kraemer,Markus Multrus,Harald Popp,Nikolaus Rettelbach,Frederik Nagel,Markus Lohwasser,Marc Gayer,Manuel Jander,Virgilio Bacigalupo +10 more
- 23 Jun 2009
TL;DR: In this paper, an apparatus for generating bandwidth extension output data for an audio signal has a noise floor measurer, a signal energy characterizer and a processor, which is adapted to control a synthesis of the components in the second frequency band.
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