How Automated In-House Audiometric Testing Works

Automated in-house audiometric testing solves the fundamental scheduling and record custody problems of mobile van programs. Under OSHA 1910.95, the compliance requirements for audiometric testing don't depend on how the test is administered. According to CDC/NIOSH, approximately 22 million U.S. workers face hazardous occupational noise annually.

The Testing Workflow

The worker sits at the testing station, puts on calibrated headphones, and follows audio prompts. The system presents pure tones at each test frequency (500-6000 Hz) in each ear, records responses, and calculates hearing thresholds. Simultaneously, ambient noise levels are measured at each test frequency to verify ANSI S3.1-1999 compliance. Results upload immediately to the cloud for Professional Supervisor review.

Automated STS Detection

Results are compared to the worker's stored baseline audiogram immediately. If the 2000, 3000, and 4000 Hz average shift reaches 10 dB, the system flags the potential STS and notifies the Professional Supervisor. The PS reviews the audiogram, makes the clinical determination, and the employer receives the STS determination within hours rather than the weeks or months typical with batched mobile van programs.

What OSHA Requires of Automated Systems

ANSI S3.6 audiometer calibration, ANSI S3.1 ambient noise documentation per test, Professional Supervisor review of all audiograms, and complete 1910.95(m) recordkeeping. The automated system must document its calibration status and ambient noise measurements per audiogram to demonstrate these requirements are met. See: Type 4 microprocessor audiometer: employer guide.