Author(s)

P. Krumbiegel, 0. Herbarth, G. Despang, E. Oberst, L. Kleinmann & H. Fritzsch

Abstract

Asthmatic and bronchitic attacks are often a reaction to air pollution. Such effects often fail to be detected during medical examinations, especially short-time sounding. To solve the problem of continuously monitoring human airway obstructions, an automatic miniature system was developed comprising the following elements. - Acoustic detector - Frequency filter - Recognition unit - Registrator working on a time scale - Data export module - Power source. Wheezing was chosen as a characteristic pathological sound. Only typical frequencies are

Keywords