Image-source method for room acoustics
This code is a transcription for python. The original work for matlab is found at Lehmann's main page.
Execute test_rir.py found in the test folder
$ python test/test_rir.py- Enable additional reveberation algorithm.
- numpy
- scipy
- pathos (Optional): Parallel processing.
Time evaluated for a 3-microphones array (in seconds):
| Language | T60 (Reveb. 200ms) |
T60 (Reveb. 800ms) |
T20 (Reveb. 200ms) |
|---|---|---|---|
| Matlab | 5 | 900 | 774 |
| Python (no pool) | 7 | 600 | 276 |
| Python (3 cpus) | 6 | 360 | 166 |
[1] E. Lehmann and A. Johansson, Prediction of energy decay in room impulse responses simulated with an image-source model, Journal of the Acoustical Society of America, vol. 124(1), pp. 269-277, July 2008.
[2] E. Lehmann, A. Johansson, and S. Nordholm, Reverberation-time prediction method for room impulse responses simulated with the image-source model, Proceedings of the IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA'07), pp. 159-162, New Paltz, NY, USA, October 2007.