Digital Wave Corporation Digital Wave Corporation is the authority in acoustic emission and ultrasonic cylinder testing. Whether you require non-destructive evaluation (NDE) services or or DOT cylinder testing equipment, Digital Wave's diverse and innovative line of products can meet your needs. Click the buttons on the right to learn more about our acoustic emission products and services, our testing and R&D services, or our ultrasonic cylinder testing equipment for compressed gas cylinders governed by DOT, EN, and ISO regulations. Click here to view videos of our cylinder testing equipment and software! Download our complete pricelist (pdf)