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Open accessProceedings ArticleDOI
02 Jun 1998
113 Citations
It is shown that important airframe noise sources can be identified in spite of the presence of engine noise, i. e., landing-gear noise, flap side-edge noise, flap-gap noise, jet-flap interaction noise, slat-horn noise, slat-track noise.
Wideband noise is much more comfortable and less annoying than narrowband noise.
Combustion noise analysis provided the best correlation to microphone noise, especially at lower speeds where engine noise is dominated by combustion noise rather than mechanical noise.
A smaller maximal noise, which must be supported, is desirable both for reasons of security and efficiency.
Open accessJournal ArticleDOI
45 Citations
From this we can get an idea about which filters is best for removing which types of noises.
To the authors' knowledge, these results demonstrate the best silicon low-noise amplifier performance up to date in this frequency range.
Finally, experiments in a reverberant room reveal that the polyhedral microphone array associated with both criteria provides the best noise source map.
In order to allow least resistance to air-traffic expansion, the acceptance of aircraft noise has to be increased, for which such a new approach to noise assessment is required.
To the authors' knowledge, this demonstrates the best noise performance up to date on a silicon platform in this frequency range.
With this tool we are able to quantify different noise sources, which is important to determine realistic noise specifications for the design of electronic neural recording interfaces.

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