Simulation und Implementation eines Audio Interface in Wellenfeldsynthese

Diploma thesis (pdf 7.595KB)

The aim of this thesis is to develop an immersive audio environment for desktop applications without using headphones. Loudspeaker signals are derived by combining the holopgraphic approach (wave field synthesis) with various panning laws. This reproduction technique has no "sweet spot" like conventional stereo or surround setups. Localisation of virtual sources occurs naturally by diffracting waves around the listeners head. The user faces highest possible freedom of movement. For loudspeaker based approaches individual head related transfer functions (HRTF's) don't have to be taken into account. Any state of the art PC running Pure Data delivers enough performance for real time calculation of the speaker signals. A simulation environment in MATLAB has been implemented to obtain theoretical information that depend on the design of a prototype like spatial radiation and bandwidth of speaker arrrays. Beside numerical results, the quality of the synthesized wave field can be evaluated graphically.

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