This is a proof-of-concept created in the process of my bachelor's thesis on geometric acoustics simulation in moving scenes. A link to the thesis itself will be provided here once it is published.
Note that only an energetic response is calculated - while audio is auralized using it, this is only to be taken as a rough example and not at all an accurate simulation.
To run this app, either download it through the releases section or clone and build it yourself. The following command line arguments are supported:
--fname=NAME: The file name of the audio (in .wav format) to apply the resulting energetic response to. Required.--scene=0: The scene to simulate. The supported scenes are listed below. Required.--rays=100000: The number of rays to simulate per energetic response. Defaults to 100000.--scaling-factor=10000: Scale up the auralized audio's amplitude by this factor. Defaults to 10000.--snapshot-method: If set, run the simulation using the snapshot rather than the interpolated method.--single-ir: If set, only calculate a single impulse response at time 0 and apply it to the entire audio.--outfile=NAME: The file name to write the resulting audio to. Defaults to "result.wav".--irfile=NAME: If set, the energetic response is written in CSV format to this file.
To reproduce the tests from the bachelor thesis, install cargo/the rust toolchain,
then run run_all_tests.sh and run_scene_1.sh.
- 0: Static 4x4x3 cube scene, with the receiver in the middle and the emitter above the receiver.
- 1: Receiver sits 343.2m away from the emitter, the emitter only emits rays in the receiver's direction.
- 2: Scene 1, but the receiver moves towards the emitter at 1/9th the speed of sound.
- 3: Scene 2, but the receiver starts 4x as far away from the emitter.
- 4: Scene 0, but rotating once per second.
- 5: L-Shaped room rotating around one of its ends, with the receiver in the rotation axis and the emitter above the receiver.