Multifrequency simulation for acoustics

Room acoustics simulation for multichannel microphone arrays

A new and efficient room acoustics simulation software package for MATLAB is presented which can simulate recordings of arbitrary microphone arrays within an echoic room. This simulator supports research related to developing and experimenting with multichannel microphone arrays and higher order ambisonic playback. Based upon the work by Schimmel et al. [1], this new simulation software package...

Virtual Acoustics by Numerical Simulation

New emerging multimedia standards, like the MPEG-4 standard allow the creation of virtual or synthetic acoustical environments. To auralize an environment from its geometric description, simulation algorithms for acoustic wave propagation are required. The different methods used for computational modeling of room acoustics can be divided into three groups [1]: statistical models, ray-based mode...

Geometrical-Acoustics-based Ultrasound Image Simulation

Brightness modulation (B-Mode) ultrasound (US) images are used to visualize internal body structures during diagnostic and invasive procedures, such as needle insertion for Regional Anesthesia. Due to patient availability and health risks—during invasive procedures—training is often limited, thus, medical training simulators become a viable solution to the problem. Simulation of ultrasound imag...

Sound Field Simulation by Computational Acoustics - Part I: Simulation Algorithm

Real-Time Acoustics Simulation using Mesh-Tracing

A number of techniques have been presented recently to simulate or predict the acoustics of a room. Among these we can find reverberation algorithms based on waveguide meshes and acoustic ray-tracing. Both approaches have disadvantages, such as an excessive amount of computation required (resulting in only off-line simulations) or aliasing phenomena caused by non-uniform speed of sound distribu...