Case Studies & Results
Real Programs.
Measurable Outcomes.
See how organizations across industries have transformed their hearing conservation programs with Soundtrace - from peer-reviewed university research to multi-site enterprise deployments.
Purdue University
Higher Education · West Lafayette, IN
The Challenge
Purdue's hearing conservation program relied on traditional booth-based testing that required dedicated space, lengthy appointments, and significant coordination across departments. Testing throughput was limited, and scheduling bottlenecks meant some employees went beyond their annual testing window.
The Solution
Implemented Soundtrace's boothless audiometric testing platform across the university, enabling testing without dedicated sound booths. The platform's continuous ambient noise monitoring validated test environments automatically.
Read the Full StudyFrom 27 minutes to 12 minutes per employee
Full 29 CFR 1910.95 compliance without a sound booth
Baseline testing available during onboarding
The Soundtrace platform allowed us to fundamentally rethink how we deliver hearing conservation services across the university.
- Purdue University Hearing Conservation Program
Published: The Hearing Journal, November 2025
"Hearing Conservation Program Model in a University Setting"
Client Outcomes
Results Across Industries
Ozinga
Concrete & Logistics · 5 States, 81 Yards · 850+ employees
Challenge
With 81 yards and 850+ employees across five states, Ozinga needed a streamlined hearing program that didn't slow down operations. Mobile vans and off-site clinics caused excessive downtime, and noise levels varied by truck age and yard design, complicating exposure assessments. Managing records across five states required a centralized solution.
Solution
Ozinga implemented Soundtrace's on-demand audiometric testing before shifts to eliminate downtime. Intelligent noise monitoring tracked exposure variations across yards, ensuring accurate risk assessment. Cloud-based recordkeeping integrated with Ozinga's HRIS via API, automating compliance tracking and standardizing testing protocols across all sites.
Results
Saved in costs & downtime
37% lower spend plus $58K in avoided employee downtime
Yards monitored
Scalable program implemented in under 6 months
Employees protected
Data-driven prevention of hearing decline across all sites
On-demand testing before shifts keeps our drivers on schedule. We avoided $58K in downtime in the first year alone.
- Ozinga Safety Team
Siemens Healthineers
Healthcare Technology · Rock Creek Plant · 30+ employees
Challenge
Siemens Healthineers needed a quick-to-implement hearing testing solution for 30 employees at a single location. Mobile vans were disruptive and lacked flexibility, making scheduling difficult. They needed an efficient, employee-friendly process that met compliance needs while providing a better overall experience.
Solution
Led by a CAOHC-certified user, Siemens Healthineers transitioned to Soundtrace's audiometry system, providing an easy on-site testing experience. Testing was completed over four days at the start of shifts, ensuring minimal production disruption and allowing employees to avoid noise exposure beforehand.
Results
Reduction in program spend
Compared to previous mobile van program costs
Reduction in employee downtime
Testing time dropped from 26 min to 10 min average
Recordable hearing loss injuries
Improved engagement through 1:1 safety team time
You guys aren't allowed to go anywhere!
- Neil N., EHS Manager - Siemens Healthineers
TW Metals
Metals Distribution · 17 Plants, Nationwide · 300+ employees
Challenge
With 17 plants and 300+ employees across the U.S., TW Metals needed a simpler way to manage hearing conservation. Mobile vans and off-site clinics caused excessive downtime, with different vendors at each plant adding inconsistency. Noise levels fluctuated throughout the year, making one-day surveys unreliable, and tracking OSHA compliance across all locations was a challenge.
Solution
TW Metals implemented Soundtrace's on-demand audiometric testing before shifts to eliminate downtime. Employee engagement improved through 1:1 time with the safety team. Automatic recordkeeping by employee and location replaced tracking down PDFs and paper records. Multi-day noise surveys replaced one-day snapshots to capture real day-to-day fluctuations.
Results
Reduction in program spend
Compared to previous multi-vendor program costs
Reduction in employee downtime
Testing time cut from 26 to 12 minutes with added 1:1 safety time
Recordable hearing loss injuries
Improved engagement and data-driven hearing protection
731 days without a recordable. Multi-day noise surveys replaced one-day snapshots - now we see the real picture across all 17 plants.
- TW Metals Safety Team
What Our Clients Say
Real feedback from safety professionals, HR teams, and operations leaders using Soundtrace.
"Soundtrace has completely changed how we handle hearing testing. 10/10 experience."
Bob H.
VP of Ops
"Soundtrace resolved the challenge of coordinating testing across three shifts."
Kevin G.
Safety Manager
"Soundtrace has given us the flexibility to do Audiometric testing around our busy production schedule. With a great support team to help get the job done!"
Tyler L.
Safety Manager
Your Program Could Be Next
Whether you're managing hearing conservation at one facility or one hundred, Soundtrace adapts to your needs. Talk to our team about how organizations like yours are getting results.