Auditory Steady State Evoked Responses ASSR takes the guesswork out of audiometric evaluation by providing accurate threshold detection using statistical analysis, greatly reducing the potential for human error. SmartEP-ASSR features include: Dual ear stimulation and dual channel acquisition. Simultaneous multi-frequency testing. Test at the four main audiometric frequencies or create your own protocol. “Response” or “No Response” evaluation result for each frequency and intensity level tested Automatically generated estimated audiogram.