Using CARL as a teaching & training tool allows for:
1.  Engaging, realistic, and competency-based learning compared to slides-based lectures
2. Unlimited practice for students without the need for a partner
3. Let students test the accuracy and reliability of their work without head movement
4. Easily supervise tens of students at once with CARL's predictable fittings
5. Student error-detection and correction in a safe environment
6. Set up equivalent stations for practical exams
Below are sample lessons illustrating how CARL has been used at our training sites:

An introductory lesson that introduces the various kinds of hearing aids and allows for students to become familiar with the different technology and terms available. Using CARL, students learn all parts of the equipment (mics, volume controls, filters, domes, etc.) in a more fun and engaging lesson typical slide-based lectures. 

Hearing Aid Styles & Terms

CARL's realistic ears and acoustics allow for the entire fitting procedure on CARL. Fit high-gain devices with consistent and predictable ear canal acoustics. Simulate sloped losses. Receive feedback/insertion depth for location of microphones, probes, eartips, earmolds, and devices within CARL's ear canal (using Camera CARL). Set up several equivalent stations using CARL's consistent ear for between-brand comparisons across stations showing multiple types of directionality, feedback management, noise reduction, or frequency lowering. Learn to place a probe tube to recommended depths in a realistic yet simulated ear. 

Fitting Hearing Aids On-ear


With earmold impressions being one of the high-risk procedures during the hearing aid prescription process, CARL allows instructors to take the liability away from the students with all trainees practicing on CARL first. With Camera CARL, trainees can receive feedback for the position of the otoblock, visualize blow-bys, and watch as the earmold impression expands into CARL's ear canal. Use CARL for competency-based evaluations of clinicians before performing on patients.

Earmold Impressions

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