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Today's efficient audio codecs for low bitrate application scenarios often rely on parametric coding of the upper frequency band portion of a signal while the lower frequency band portion of the same is conveyed by a waveform preserving coding method. At the decoder, the upper frequency signal is approximated from the lower frequency data using the upper(More)
The consequence of neuronal regeneration on the affected cell body has not been well documented previously. The long-term effects of either successful peripheral nerve (sciatic) regeneration or exogenously administered nerve growth factor (NGF) on dorsal root ganglion (DRG) neurons were determined. The degree of neuronal death and changes in neuronal size(More)
1 At recent AES conventions, authors have had the option of submitting complete 4-to 10-page manuscripts for peer-review by subject-matter experts. The following two papers have been recognized as co-winners of the AES 132nd Convention Peer-Reviewed Paper Award. The AES has launched a new opportunity to recognize student members who author technical papers.(More)
Bandwidth extension (BWE) is an important parametric technique applied by modern audio coders in order to achieve efficient data rate compression at low bitrates. The perceptual quality of BWE enhanced signals is, however, often hampered by artifacts caused by inharmonicity. We propose hence a bandwidth extension method that avoids inharmonicity, and, at(More)
The decomposition of audio signals into perceptually meaningful multiband modulation components opens up new possibilities for advanced signal processing. The signal adaptive analysis approach proposed in this paper will be shown to provide a powerful handle on the signal's perceptual properties: pitch, timbre or roughness can be manipulated straight(More)
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 signal parts that have been quantized to zero by the(More)
In recent years, methods to decompose an audio signal into a harmonic and a percussive component have received a lot of interest and are frequently applied as a processing step in a variety of scenarios. One problem is that the computed components are often not of purely harmonic or percussive nature but also contain noise-like sounds that are neither(More)
At low bitrates, next generation audio coders apply waveform preserving transform coding only for the perceptually most relevant parts of the signal. The resulting spectral gaps are filled in the decoder through techniques like Intelligent Gap Filling (IGF). IGF is currently being standardized in MPEG-H 3D-Audio and also in 3GPP Enhanced Voice Service(More)