Valuable information on NoiseGardTM/digital
When compared with other adaptive technologies that are on the market, the particular strength of the fully-adaptive FF-NoiseGard is its ability to cancel broadband noise and not just individual tonal components. Cockpit noise consists of a mixture of broadband noise components and individual tonal components (e.g. the fundamentals and harmonics of propeller rotation). If only the tonal components are canceled, the broadband noise remains unaffected and no significant noise reduction can be achieved in practice. Because it is fully adaptive, the NoiseGardTM/digital technology is able to simultaneously cancel both broadband and tonal sound components, resulting in excellent performance at all times.
Overall noise compensation (principle)The attenuation curves of the passive attenuation and of the digital FB-ANR are fixed, whereas the attenuation of the digital adaptive FF-ANR depends on the sit- uation. This reveals the powerful effect of adaptivity, which always provides the greatest attenuation of the loudest noise components.
| dB | Noise Attenuation |
| |
| 0 | |
| -5 | |
| -10 | Passive |
| Dig. FB |
| |
| -15 | |
| -20 | Dig. Adaptive FF |
-25
-30
-35
