Une note sur l'instantaneite, la continuite et l'integration des niveaux de bruit

摘要

This paper concerns the notions of acoustic pressure and "instant" levels in environmental acoustics. These o are cited in numerous papers, but sometimes with different definitions, and this may induce confuseness. uation may be the result of a confusion between the physical values, that may vary quickly, and their ransforms at the end of an acquisition or measure instrument; and perhaps is there attention and language ns between these two notions. is paper, we try to distinguish between these two aspects, and we explain the mathematic properties of isformation of a signal by an instrument (convolution). We then discuss the properties and consequences ilse responses convolution, the notion of temporal interval of acoustic signal integration, and exponential responses.