According to statistics, more than half of soldiers who have been in a combat zone have hearing problems. The United States has created the Tactical Communication and Protective System (TCAPS), which will help solve this problem. The system is based on smart earplugs that significantly reduce high levels of impulse noise and amplify the voice frequency band, giving service members super hearing in the literal sense of the word. Incidentally, besides the military, the device can also be used by construction workers and music lovers.
According to one of the system's developers, Captain Jack Moore, the headphones will not only solve the problem of blast-related hearing injuries but also significantly enhance hearing.
To start using TCAPS, a special insert must be placed in the ear; it automatically expands within 15–20 seconds to fit snugly. The device reduces the noise of loud gunfire, for example, from 150 to 85 decibels. By allowing a soldier to hear and communicate with fellow service members while protecting their hearing, TCAPS also serves as a means of communication.
Outwardly, the device resembles ordinary modern headphones, which, however, have a number of high-tech features. The user does not need to reduce the noise level manually, as TCAPS does this automatically.
The louder the sound coming from the environment, the more actively the noise cancellation works. A person wearing TCAPS can still hear, but the sound is no longer able to cause damage.
— Doug Brungart, chief scientist at NMASC
According to him, about 20,000 TCAPS sets are currently in service with the U.S. Army. Researchers continue to upgrade the device; the next stated goal is to develop technology that will protect service members' hearing from delayed damage and impulse noise.