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Cross-Spectrum.com
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Massachusetts firm offering sound and vibration measurement and consulting services for environmental, municipal, engineering and architectural applications.
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RMP Acoustics
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UK firm specialising in acoustic design, building services noise, sound insulation, planning and research and development of acoustic building products.
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Acoustic Associates, Ltd.
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A consulting firm in Palatine, Illinois specializing in audiometric testing, room acoustics, sound assessment, noise control, hearing conservation, and audiology.
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