HF Direct and Noise Management

HF Direct^TM and Noise Management

HF Direct is a dual band directional system which allows effective directionality more often in more situations. In conjunction with the Noise Management system, HF Direct performs a two-pronged attack on extraneous noise.

As shown in the graphs on the following page, HF Direct applies directionality to the frequencies where the speech information is greatest i.e. in the higher range; Noise Management is then applied judiciously at these frequencies.

By contrast, in the range which determines speech loudness, i.e the lower frequencies, HF Direct remains in omni-directional mode. Since this is also where most noise is found, Noise Management can be applied more strongly, while voices remain clear and natural sounding.

The result is that the important voice components are preserved, while noise is reduced to a minimum. In addition the loudness aspect of speech is maintained,

Yet another benefit of this approach is the ability to localize sounds thanks to the combination of HF Direct with OpenEarT Acoustics. By allowing some sounds to enter the ear from all directions, the brain can identify the location of the source.

So, it's no longer adequate to talk about directional systems and noise reduction systems in isolation. Intelligent synergies are now an essential part of a new definition of mid-priced hearing care.