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tic omni speakers; 360° omni directional hearing and why is it so important?

"In real life, our ears and brain interpret sounds from every direction, in a 360-degree circle, including even the dimension of height, according to Alan Lofft, the former editor of Sound and Vision and Audio magazines, in an article he wrote for the Web site www.axiomaudio.com.

The Human Ear hears in 360 degrees
         Courtesy of NASA

Like a super computer running in high gear, our sophisticated hearing system decodes spatial and directional information in real time, telling us instantly the tonality, frequency content and loudness of sounds from all directions.

Simple stereo uses just two speakers, at the front right and left to try and create complex directional sound. Even as early as the 1930's, Bell Telephone scientists concluded that a minimum of three channels were necessary to convey a reasonable simulation of an orchestra performance, according to Lofft.

In the 1950s and 1960s, Hollywood engineers began adding channels to sound systems. There was a center channel behind the screen for actor dialogue, right and left front speakers for music and eventually right and left speakers on each side for ambient sounds such as wind in the trees and crickets in summer, Lofft said."

What they all miss is a true 360° omni-directional experience. TIC Corporation's famous OmniSpeakers® provide all that.

frequency and loudness response of the human ear

The Human Ear cannot respond to all frequencies in an unbiased manner. Audible range of human being is commonly quoted as from 20 Hz to 20,000 Hz, which in fact will vary with age, health, past exposure to noises, and so forth. The Human Ear also acts like a filter and will favor certain frequencies over the others. The Human Ear is most sensitive to sounds at the range of 1,000 to 5,000 Hz, and particularly at about 4,000 Hz.

Changes in Sound Pressure Levels Noticeable Change in Loudness
3 dB Just noticeable
5 dB Clearly noticeable
10 dB Twice or half as loud
20 dB 4 times or 1/4 as loud
Table 1. Human Hearing Subjective Reactions to Changes in db pressure
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