| Business | Phone |
| Arcos Acoustical Consulting 1400 Kensington Rd Nw #101, Calgary T2N 3P9 | (403) 283-1191 |
| Patching Associates Acoustical 7777 10 St Ne #100, Calgary T2E 8X2 | (403) 274-5882 |
| Trilex Vibroacoustical Corp 6311 Bowness Rd Nw, Calgary T3B 0E4 | (403) 202-9248 |
| Faszer Farquharson & Assoc Ltd 605 1 St Sw #304, Calgary T2P 3S9 | (403) 508-4996 |