Audiometric Training. Noise Measurement. Audiologist Reviews. CAHOC Certification and Training Course Registration Our Mission Assisting our customers in Audiometric Certification and Training. Training & Certification Audiologist Review Noise Measurement I valued the knowledge, experience and delivery skills of the instructor.Gail, Seattle “Beyond my expectations. Not boring at all. I enjoyed the class. The instructor was very knowledgeable in all subjects.”Janelle, Ontario “I valued the knowledge, experience and delivery skills of the instructor.”Kathe, Ontario Want to be the first to know about training or prevention? Check out our courses and get on the list!