The lenses are precision molded from a high impact, non- reverberant, clear plastic. The shells reflect fully 94% of the sound energy that strikes them. They also reject noise which comes from your sides and your back. This deceptively simple device has some sound science behind it: 1. Improved Haas Precedence Effect - the direct sound from a source like a TV loudspeaker tends to mask the distracting noise of room "echoes" that have been reflected and delayed by up to 30 milliseconds.This is a sonic benefit called the Haas Precedence Effect. But sounds that travel over 35 feet, reflecting off of walls, floors, ceilings and back again, can overcome the Haas effect. This can blunt your ability to understand words, and can blur sounds from audio systems or live musicians. Earglasses® lenses can block out over 55% of those sound-image-destroying room reflections.

2. Less Off-Axis Response – almost all loudspeakers' most accurate frequency response comes straight out from their fronts. Unfortunately, a loudspeaker's "off-axis" sounds make up most of a listening room's reflections. These sounds are more highly distorted as well as less dynamically accurate. Here again, by reducing the ears' acceptance of reflected sound, Earglasses® lenses can make any decent loudspeaker with good on-axis response sound much more accurate. Even a boombox can begin to have some of the listening quality of a high-end audio system. 3. Non-electronic Amplification - our reflectors amplify mid-to-high-frequency sounds by over twelve decibels. Though lower in amplitude than the gain produced by electronic hearing aids or personal sound amplifiers, this amplification can be more useful in several respects. The lenses' amplification frequency curve complements the frequencies most often lost due to age-induced hearing declines. Also, the gain is perfectly phase-coherent, and noise free. The lenses of course can't be damaged by perspiration, and never need batteries or electronic repairs. The sounds which are most powerfully amplified are those which carry sounds' details, and the most delicate, easily muffled overtones.

The chart shows the frequencies boosted by Earglasses® new model’s lenses. These results from a sound technician’s measures show that our new model amplifies even better than our old headband-mounted lenses did. The increased volume of sound at frequencies above 8,000 cycles per second are of great importance, since that’s where people tend to lose their hearing first. And this is the region where our new model shows the greatest improvement over our old model. 4. Out-Of-Home Use - their appearance aside, Earglasses® lenses are well suited to use in venues where delicate sounds die quickly. At "packed house" musical performances, in the thinner air of mountain altitudes, or in sound-damping humid weather, musical instruments' overtones can lose over 25 decibels in volume just moving from the front to the rear of a concert hall. Users at lectures, plays, operas and concerts will immediately notice the reduced distractions of audience noise, and the way performers' or lecturers' intelligibility is enhanced, even from seats in the very back row. 5. Ergonomics - the shape of the Earglasses® lens has been carefully determined by merging human factors and acoustic data. For example, the lens' size is based on medical census data regarding the typical size of the human ear, and the position of the ear canal opening in relation to the rear of the typical pinna. And the curve of the lens is designed to preserve phase coherency of sound waves as they bounce off of the lens and the concha, and are sent into the opening of the ear canal. 6. Research and Development - we learned a great deal from testing our first model's shape in a sound laboratory's anechoic chamber. These findings plus empirical testing of prototypes produced by "3D Printing" aided design of our new model. Without the application of the findings from these experiments, the product's performance and comfortability would have been significantly reduced.