diff --git a/shared/VimicSurfaceProperties.txt b/shared/VimicSurfaceProperties.txt
index e16fbb7..f04104c 100644
--- a/shared/VimicSurfaceProperties.txt
+++ b/shared/VimicSurfaceProperties.txt
@@ -1,8 +1,11 @@
 zero, 0.1 0.1 0.1 500 3500;
 full, 99.9 99.9 99.9 500 3500;
+acoustic_tiles, 40. 58. 53. 88 2840;
 audience, 40. 98. 91.5 500 3500;
 brick, 2. 4. 5. 500 3500;
 carpet, 6. 37. 63. 500 3500;
+carpet_thin, 5. 20. 44. 355 2840;
+drywall, 19. 50. 68. 355 2840;
 grass, 40. 35. 32. 500 3500;
 metal, 76. 95. 77. 500 3500;
 sand, 35. 50. 67.5 500 3500;