Acoustic photo- and cinematography based on interference transformation

A time-domain technique is introduced to localize far and moving acoustic objects (compare URL http://www.gfai.de/www—open/perspg/heinz.htm). The algorithm is called ‘‘Heinz Interference Transformation’’ (HIT) [Heinz et al.: ‘‘Time pattern, data addressing, coding and topographic maps between multiple connected neural fields—a physical approach to neural superimposition and interference,’’ BioNet’96, Berlin, ISBN 3-00-001107-2]. HIT reproduces mirrored (optical) projections just as nonmirrored reconstructions of different sources depend on the direction of time axis. Based on time-domain calculations, the introduced method reproduces an approximation for different source points in a grid matrix, arranged in an virtual space or array or field in physical dimensions of the measured scene. It is possible to reconstruct acoustic single-time events to cinematographies (movies). Maximum image rate is the sample frequency of time functions. Independent of the integration interval, it is possible to reconstruct in cinematographies the wave field or movies. Properties of HIT, influence of time functions’ properties and channel number, different algorithmical tasks, relations between time and space, aliasing and reconstruction parameters are discussed as examples. [Work supported by German BMWi, Marktvorbereitende Industrieforschung.]