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Dive into the research topics where Martin Gasser is active.

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Featured researches published by Martin Gasser.


Proceedings of the 1st ACM workshop on Audio and music computing multimedia | 2006

Detecting harmonic change in musical audio

Christopher Harte; Mark B. Sandler; Martin Gasser

We propose a novel method for detecting changes in the harmonic content of musical audio signals. Our method uses a new model for Equal Tempered Pitch Class Space. This model maps 12-bin chroma vectors to the interior space of a 6-D polytope; pitch classes are mapped onto the vertices of this polytope. Close harmonic relations such as fifths and thirds appear as small Euclidian distances. We calculate the Euclidian distance between analysis frames n +1 and n -1 to develop a harmonic change measure for frame n. A peak in the detection function denotes a transition from one harmonically stable region to another. Initial experiments show that the algorithm can successfully detect harmonic changes such as chord boundaries in polyphonic audio recordings.


eurographics | 2004

Case study: visual analysis of complex, time-dependent simulation results of a diesel exhaust system

Helmut Doleisch; Michael Mayer; Martin Gasser; Roland Wanker; Helwig Hauser

In previous work we have presented visualization techniques that provide engineers with a high degree of interactivity and flexibility for analyzing large, time-dependent, and high-dimensional data sets resulting from CFD (computational fluid dynamics) simulations. In this case study we apply our techniques in the fields of the automotive engineering industry and demonstrate how users benefit from using them during their routine analysis, as well as for exploring new phenomena. For coping with some of the special requirements in this application, we adapted and extended parts of the system. A comparison of two related cases of a diesel exhaust system is presented, and some important questions about these cases are addressed.


audio mostly conference | 2010

Limitations of interactive music recommendation based on audio content

Arthur Flexer; Martin Gasser; Dominik Schnitzer

We present a study on the limitations of an interactive music recommendation service based on automatic computation of audio similarity. Songs which are, according to the audio similarity function, similar to very many other songs and hence appear unwantedly often in recommendation lists keep a significant proportion of the audio collection from being recommended at all. This problem is studied in-depth with a series of computer experiments including analysis of alternative audio similarity functions and comparison with actual download data.


Simulation | 2006

Interactive Focus+Context Analysis of Large, Time-Dependent Flow Simulation Data

Helmut Doleisch; Helwig Hauser; Martin Gasser; Robert Kosara

The visualization of time-dependent simulation data, such as data sets from computational fluid dynamics (CFD) simulation, is still a very challenging task. In this paper, we present a new approach for the interactive visual analysis of flow simulation data, which is especially targeted at the analysis of time-dependent data. This supports the flexible specification and visualization of flow features in an interactive setup of multiple linked views. Special emphasis is put on new mechanisms to capture time-dependent features (i.e. flow features that are inherently dependent on time). We propose the integration of attribute derivation into the process of interactive visual analysis to enable the subsequent user access to otherwise implicit properties of the unsteady data in our interactive feature specification framework. All views of this flow analysis setup are linked, in the sense that the features in focus are consistently emphasized in the visualization (more colorful, less transparent) whereas the rest of the data are only shown as context in reduced style. In addition to introducing our new approach, we also demonstrate its use in the context of several application examples.


VISSYM '03 Proceedings of the symposium on Data visualisation 2003 | 2003

Interactive feature specification for focus+context visualization of complex simulation data

Helmut Doleisch; Martin Gasser; Helwig Hauser


international symposium/conference on music information retrieval | 2008

PLAYLIST GENERATION USING START AND END SONGS

Arthur Flexer; Dominik Schnitzer; Martin Gasser; Gerhard Widmer


SimVis | 2005

Interactive Feature Specification for Simulation Data on Time-Varying Grids.

Helmut Doleisch; Michael Mayer; Martin Gasser; Peter Priesching; Helwig Hauser


international symposium/conference on music information retrieval | 2013

Automatic Alignment of Music Performances with Structural Differences.

Maarten Grachten; Martin Gasser; Andreas Arzt; Gerhard Widmer


Archive | 2009

FM4 SOUNDPARK AUDIO-BASED MUSIC RECOMMENDATION IN EVERYDAY USE

Martin Gasser; Arthur Flexer


international symposium/conference on music information retrieval | 2006

An Implementation of a Simple Playlist Generator Based on Audio Similarity Measures and User Feedback

Elias Pampalk; Martin Gasser

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Arthur Flexer

Austrian Research Institute for Artificial Intelligence

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Gerhard Widmer

Johannes Kepler University of Linz

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Andreas Arzt

Johannes Kepler University of Linz

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Dominik Schnitzer

Austrian Research Institute for Artificial Intelligence

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Maarten Grachten

Johannes Kepler University of Linz

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Thassilo Gadermaier

Austrian Research Institute for Artificial Intelligence

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Elias Pampalk

Austrian Research Institute for Artificial Intelligence

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