Daniel Rudrich

Kunstuniversität Graz | KUG · Institute of Electronic Music and Acoustics

Acoustically transparent headphones are an important tool for Augmented Reality (AR) research. To supplement a real acoustic scene with virtual sound sources or virtual acoustics, previous studies have used the very open AKG K1000. Since this model was discontinued and is expensive on the second-hand market, we present modifications to a regular op...

The constant-Q transform (CQT) is a valuable tool for music information retrieval, e.g. for chroma calculation and harmonic analysis. In this E-Brief, we propose a block based, real-time capable, efficient analysis algorithm resting upon a subsampling technique performed with fast Fourier transform. In addition, advanced features such as time resol...

Ambisonics has become the standard audio format for 360-degree videos and virtual reality. Content is typically created by Ambisonic microphone recordings, single synthetically spatialized/encoded sources, or a combination of both. Whereas real-world recordings include room information by nature, synthetically spatialized sources often lack in phys...

A measurement repository (DirPat) has been set up to archive all 3D and 2D directivity patterns measured at the Institute of Electronic Music and Acoustics, University of Music and Performing Arts in Graz. Directivity measurements have been made of various loudspeakers, microphones, and also of human speakers/singers for specific phonemes. The repo...

Our contribution presents free guitar samples, their score, and documentation. While the original idea is to provide ecologically valid testing material for virtual auditory environments (VAEs), the use of the guitar samples is not restricted to this application and also permits various other, free, academic, and non-academic applications. In parti...

Loopers become more and more popular due to their growing features and capabilities, not only in live performances but also as a rehearsal tool. These effect units record a phrase and play it back in a loop. The start and stop positions of the recording are typically the player's start and stop taps on a foot switch. However, if these cues are not...

Animated by the award-winning, free ambiX/mcfx VST plugins that improve efficiency and applicability of 3D audio productions in Ambisonics, this contribution demonstrates an example of their successful usage and extension as live effects in a latency-critical sound-reinforcement situation. We present 3D-audio live effects developed for and used dur...