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Our experimental results show that our proposed methods significantly outperform existing leading approaches on buzz clustering and buzz-type prediction.
Non-rotor-alone scattered tones can be a significant source of buzz-saw noise at low supersonic fan speeds.
This article contends that the practice of buzz marketing is usefully framed within the study of everyday communication, which has shown considerable growth in the field of communication studies over the past decade.
Open accessProceedings ArticleDOI
Henri Siller, Ulf Michel 
17 Jun 2002
The characteristics of buzz-saw noise are seen to vary between individual engines and even, for the same engine, between different fly-overs.
Results show that shot noise events are less frequent in the industrial than at the urban environment, but when a noise event occurs, noise pulses appear more grouped in bursts, exhibit larger amplitude and wider bandwidth.
Present results indicate that if, to challenge stimuli in or near the transition region, high‐pass noise (1000‐cps cutoff) is added the “buzz” quality associated with the pulse‐rate mode can be masked and a fundamental‐frequency pitch judgment elicited.
Installation noise increases not only the total aircraftnoiseinthe flyoverplanebutalsointhesidelinedirections. It is especially important during landings and takeoffs when the flaps are down.
Proceedings ArticleDOI
Sebastien Guerin, Ulf Michel 
08 May 2006
This study shows that the prediction of jet mixing noise collapses reasonably well with the measurements, a modal analysis of buzzsaw tones based on the farfield directivity gives results in agreement with the theory of buzz-saw tone generation, the amplitude of the blade passing frequency tone depends on the slat/flap settings and airspeed but not on the landing gear position.
The second optimal trajectory requires higher launch energy, but it renders a dramatic 97% maximum noise decrease.
This analysis shows the existence of precursor phenomena that can appear several tenths of seconds before the onset of buzz.
The results show that this technique can measure exact value of buzz frequency as well as its onset.
Proceedings ArticleDOI
01 Apr 1993
19 Citations
Results obtained suggest that shock-induced separation may not be an essential driving force behind all buzz phenomena.
The detection of these precursors could, with the appropriate activation of a control device, allow the avoidance of buzz.
Moreover, these parameters postpone the buzz onset.
Proceedings ArticleDOI
11 Apr 2011
19 Citations
The present engine system will also solve the problem of the buzz at highersonic conditions.
The results of these studies reveal the detailed effects of the throttling ratio and the structural deformation on the buzz characteristics.

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