Sound Transmission Class (STC) Rating Scale
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Vibration & Noise Control Solutions:
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The Built Environment: Noise, Vibration &
Acoustical Engineering Solutions
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Transportation & Traffic Sources: Rail, Subway, Bridge, Tunnel & Aircraft Environmental Noise/Vibration Impact & Mitigation Solutions
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Defense and Security: Acoustical Consulting for Health & Safety
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Product Research & Development: Sound, Noise & Vibration Test, Measure & Analysis
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