We show that the free-by-cyclic groups of the form F2 o Z act properly cocompactly on CAT(0) square complexes. We also show using generalized Baumslag–Solitar groups that all known groups defined by a 2-generator 1-relator presentation are either SQ-universal or are cyclic or isomorphic to a soluble Baumslag–Solitar group.

There are strong indications that musical sound and body motion are related. For instance, musical sound is often the result of body motion in the form of sound-producing actions, and muscial sound may lead to body motion such as dance. The research presented in this dissertation is focused on technologies and methods of studying lower-level features of motion, and how people relate motion to s...

Soundscapes of a city as cultural-symbolic space mediating our perception sounds and noises are dynamic, changeable heterogeneous. The way everyday life, cultural experience, audio-visual texts consumed outline different trajectories interaction with sonic environment make the border between sound noise quite fluid. This article presents ethnographic data, important for understanding process fo...

This paper presents a method to synthesize aircraft noise. The method provides designers with a tool for sound quality evaluation with which target sounds for future aircraft design can be developed. Quick and economic evaluations concerning the quality of sounds of different design alternatives or improvements on existing aircraft become possible. The method has the potential to become a cruci...

A new method is introduced for encapsulating the properties of a musical instrument for synthesis that is realistic both in terms of sound quality and responsiveness. Sound quality is achieved using analysissynthesis techniques for capturing and reproducing the sounds of an instrument from actual recordings. The concept of the Musical Instrument Character Map (MICMap) is introduced as the basis...