No more "yell" phones?Have you ever noticed how loudly people speak into cell phones? Perhaps it's because they think the person on the other end of the line can't hear them, or maybe they just can't hear the person on the other end of the line. Regardless, we can hear them loud and clear. NASA NASA: see National Aeronautics and Space Administration. NASA in full National Aeronautics and Space Administration Independent U.S. is working on a solution. Scientists have found that by placing small sensors on the throat, they can capture the nerve impulses nerve impulse n. A wave of physical and chemical excitation that moves along a nerve fiber in response to a stimulus. that result from sub-vocal speech--the nearly silent speech that results when you talk to yourself. In the experiments, the subject talks to himself so quietly he can't be heard. But, the tongue and vocal cords vocal cords: see larynx. Vocal cords The pair of elastic, fibered bands inside the human larynx. The cords are covered with a mucous membrane and pass horizontally backward from the thyroid cartilage (Adam's apple) to insert on still receive recordable speech signals that are then processed through a speech recognition program. In their first experiment, scientists trained their speech recognition software to recognize six words and 10 digits repeated sub vocally. Initial word recognition averaged 92 percent accurate. Another benefit is a reduction of how much ambient Surrounding. For example, ambient temperature and humidity are atmospheric conditions that exist at the moment. See ambient lighting. noise the microphone picks up. NASA hopes to eventually use the system in space suits, but it would also be useful for air-traffic controllers air-traffic controller air n → aiguilleur m du ciel air-traffic controller air n → Fluglotse m in noisy airport towers, and yell--er ... cell phones, of course. |
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