1. With your recording equipment go to the noisy environment and record your two volunteers having a conversation amidst the noise. The recorded conversation should be very difficult but not impossible to hear.
2. Note the length and type of musical experience your musician test subjects have.
3. Have test subjects listen to the recording, picking out and writing down as much of it as they can hear.
4. Compare the results of this hearing test for your musician and non-musician test subjects. Did the musicians do better on the test?
5. Analyze results more carefully. Did any patterns emerge relating length or type of musical training or practice to how well test subjects did?