Important safety note: Never point a laser into anyone's eyes, including your own!
While your device is on a table, carefully aim the laser beam at the mirror on the membrane. You may need to adjust either the laser pointer or the vibration chamber to get it just right. Use the T-joint to tilt the laser pointer up or down. You might also need to rotate the vibration chamber to line up the laser and the mirror perfectly.
Once the laser is hitting the center of the plastic mirror, check to make sure that a crisply reflected laser spot is visible.
Aim your Vocal Visualizer at a wall, screen, floor, or other flat reflective surface. Again, never aim the laser pointer or the reflected beam directly at your own or anyone else’s face or eyes.
Hold the Vocal Visualizer’s vibration chamber close to your mouth. Hum, sing, speak, or make weird noises into it. As you vocalize, try changing your pitch (frequency) and your volume (amplitude) and take note of the different results.