AURA’s highly efficient algorithms developed by ADA  in conjunction with Aachen University drastically reduce the calculation time required for detailed reflection studies, while increasing accuracy. AURA calculates with greater detail using both diffusion/scattering and ray tracing models.

AURA takes full advantage of multi-threading, multi-core PCs to reduce calculation times by a factor of 10 or more and calculate all the key room parameters defined in ISO 3382. Perhaps a word of explanation is in order.  The classic measures simulated in EASE and EASE JR, such as RT60, D/R Ratio and Critical Distance, are useful indicators of the acoustic performance of the room and its sound system, but do not fully take into account the subjective listening experience. Over the years, acousticians have developed other measures that more fully reflect the listener’s tonal perception of sound. ISO 3382, the International Standard on Room Acoustic Measurements defines these measures.

Acoustical Measures offered by AURA include:

- Earl Decay Time (EDT) - Reverberation Time (T10, T20, T30) - Lateral Fraction (LF) & Lateral Fraction Coefficient (EFC) - Clarity (C80) - Definition (C50) - Sound Strength, - Center Time - Echo Criteria for Speech & Music - STI & Articulation Loss

The lower calculation times required when coupled with speedy computers, allow reflection based studies that encompass the entire impulse response length. This eliminate the need to add a statistical tail to the impulse response and improves the realism of auralizations.

AURA also includes a Scattering Wizard that allows real-life approximations of scattering coefficients and a Diffuse Rain option that allows the program to accurately include the effects of diffusion in its simulations.