Содержание
- 2. Abstract In this model the acoustics of a small concert hall, with a volume of 422.5
- 3. Ray Acoustics Interface The Ray Acoustics physics interface is used to compute the trajectories, phase, and
- 4. Geometry windows seating area stage microphone location: (x_m,y_m,z_m) diameter: D_m entrance door
- 5. Definitions: Selections Set up selections for the different boundaries
- 6. Set the number of secondary rays to 0 if the Material Discontinuity conditions is not used.
- 7. Physics Setup 2 The Material Discontinuity condition can be used on interior boundaries between domains with
- 8. Source 1: Release from Grid Select the source location or locations (several can be entered) Select
- 9. Source 2: Release from Grid In this second release feature the source is assumed to contain
- 10. Wall: Specular Reflection Specular reflection wall condition Optionally manually control the phase shift at a boundary
- 11. Wall: Diffuse Scattering The Diffuse scattering wall condition causes the wave to leave the surface in
- 12. Wall: Mixed Specular and Diffuse For a Mixed diffuse and specular reflection condition enter the Probability
- 13. Study 1 and 2 Two studies are set up: Study 1: Single Frequency: Rays with a
- 14. Study: Ray Tracing Solve the model for 1.5 s in steps of 0.1 s. This will
- 15. Results 1 (Single Frequency) Start by deselecting the Automatic update of plots option under the Results
- 16. Results 2 (Single Frequency) SPL at the seats surface found by plotting the accumulator variable. The
- 17. Results 3 (Single Frequency)
- 18. Results 4 (Single Frequency) NB: Before plotting set the Time selection to Last! The energy response
- 19. Results 5 (Single Frequency) NB: Before plotting set the Time selection to Last! Impulse response as
- 20. Results 5 (Single Frequency) Plot the ray trajectories as lines. Filter out the number of rays
- 21. Results 1 (Frequency Distribution) Analyze the impulse response of an emitted frequency distribution by summing (over
- 22. Results 2 (Frequency Distribution)
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