Active Noise Reduction Advanced Hearing Protection Technology Noise & Echo Cancellation Algorithms Technology Pro Tech Communications, Inc. has rights to more than 50 technology patents relating to Active Noise Reduction (ANR) and noise and echo cancellation.   As an industry leader, the Pro Tech engineering team continues to apply these patents in developing award winning audio and communications solutions for hearing protection, safety and comfort. The Pro Tech core technologies are the basis for delivering enhanced audio clarity of communications.   Pro Tech is committed to the development of innovative products that enhance the sound experience for business users, industrial users, and consumers.

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