On Vibrations producing Sound

Effect of whole body vibrations on sound localization

Sound-producing sand avalanches

Sound-producing sand grains constitute one of nature’ s more puzzling and least understood physical phenomena. They occur naturally in two distinct types: booming and squeaking sands. Although both varieties of sand produce unexpectedly pure acoustic emissions when sheared, they diŒer in their frequency range and duration of emission, as well as the environment in which they tend to be found. L...

The initial vibrations of the first heart sound.

The major component of the normal first heart sound is that due to valvular closure. Preceding this there occur low frequency, low amplitude vibrations commonly attributed to auricular systole. It has been shown in this study that such vibrations appear invariably even though the auricles are fibrillating, and in heart block when auricular systole is widely seperated from ventricular systole. I...

Influence of wall vibrations on the sound of brass wind instruments.

The results of an experimental and theoretical investigation of the influence of wall vibrations on the sound of brass wind instruments are presented. Measurements of the transmission function and input impedance of a trumpet, with the bell both heavily damped and freely vibrating, are shown to be consistent with a theory that assumes that the internal pressure causes an oscillation of the diam...

The influence of vibrations on perceptual sound attributes: Application to Diesel vehicles

In this thesis work we focus on the influence of seat and steering wheel vibrations on the sound perception of Diesel vehicles, and we try to extract positive characteristics, related to the preference rating. In addition to this multimodal approach, the cross-cultural question between France and Germany is investigated to compare user judgments between two European countries which use many Die...