Mission Critical Systems

SPEAR Labs, LLC is located in Nashville, Tennessee. Our company designs mission critical communication, hearing protection, and situation awareness systems for the modern warfighter. SPEAR Labs works with industrial, motorsports, military, aviation, and aerospace customers to develop, prototype, test and manufacture highly ruggedized equipment for mission critical applications.

Active Noise Reduction Systems

Active Noise Reduction (ANR) is an electronic process which samples sound within an enclosed space with a microphone, then plays the sound back out of phase. The result is the ambient noise level is significantly reduced in the lower frequencies. This reduction allows for greater speech intelligibility when using communications, lower noise levels, and less user fatigue caused by droning low frequency noise. SPEAR Labs employs A.R.T. (Amplitude Reduction Tuning) to design state-of-the-art ANR systems for headsets, ground crew helmets, and flight helmets. SPEAR Labs has many custom ANR solutions for use in motorsports, industrial, aviation, and military applications. SPEAR Labs uses many exclusive technologies in our ANR systems. We have Commercial-off-the-Shelf (COTS) ANR systems designed to meet mission critical requirements. Additionally, we can design custom systems for unique applications.


Tactical Hearing Protection

Hearing protection while maintaining situation awareness has always been a problem. The use of helmets and headsets restricts the user’s ability to monitor audio not transmitted into the helmet or headset. SPEAR Labs' proprietary designed Hearing Enhancement Amplitude Reduction System (H.E.A.R.S.) allows the user to monitor outside audio source while still wearing a helmet or headset. This is done by monitoring sound outside the helmet and dynamically adjusting the audio level sent to the user’s ears to maintain safe listening levels. User selectable level adjustments maintain a selected volume level even in dynamic high noise environments. Additionally, H.E.A.R.S. will react to impulse noises (such as gunfire) to protect hearing. H.E.A.R.S. is an integrated feature of our ANR technology for the ultimate in hearing protection, speech intelligibility, and improved situational awareness.


Tactical Voice Communication

Voice communication in a dynamic environment becomes difficult due to the conflict of isolating the user's voice when transmitting while attempting to mask the background noises of the user's environment. SPEAR Labs has devised solutions that virtually eliminate unwanted noise from the user's transmission. The microphones used on our products are robust for any environment, but highly sensitive to transmitting the user's voice in environments ranging from high-winds to loud engine noises. This allows the user to not only to be heard clearly but allows them to talk lower increasing their ability to stay as covert as possible. Some of the microphones compensate for pressure change in order to allow constant and stable communication in environments as harsh as full pressure suits. The clarity of all of the microphones improve speech intelligibility which in turn further aids the use of voice recognition by providing a clear signal to the interpreting computer software.


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