Andreas Niedermeier — accepted AI-conference papers

2016

Harmonic-percussive-residual sound separation using the structure tensor on spectrograms

Richard Fug, Andreas Niedermeier, Jonathan Driedger, Sascha Disch, Meinard Müller

ICASSP 2016accepted

Harmonic-percussive-residual (HPR) sound separation is a useful preprocessing tool for applications such as pitched instrument transcription or rhythm extraction. Recent methods rely on the observation that in a spectrogram representation, harmonic sounds lead to horizontal structures and percussive…

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2015

Spectral envelope reconstruction via IGF for audio transform coding

Christian R. Helmrich, Andreas Niedermeier, Sascha Disch, Florin Ghido

ICASSP 2015accepted

In low-bitrate audio coding, modern coders often rely on efficient parametric techniques to enhance the performance of the waveform preserving transform coder core. While the latter features well-known perceptually adapted quantization of spectral coefficients, parametric techniques reconstruct the…

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