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Biomedical subjects

F Schwetz

Publications and source records attributed to F Schwetz.

31 records · Page 2Linked to original sources
PubMedDate not supplied

Experimental exposure to impulse noise in the especially pathogenic impact frequency range.

The pathogenicity of impulse-induced noise depends not only on its intensity, but also on the repetition rate of the individual sound impacts. The reason is the effect exercised by the acoustical reflex. Its protective function is said by some experts to last for only little more than 2 seconds. For this reason, two groups of young persons were exposed to noise impacts whose repetition rates were 2 and 3 seconds, thus falling within the period of time in question. The resulting auditory fatigue (TTS) is analysed. The results of the measurements suggest that the activity of the acoustical reflex lasts less than 2 seconds under these test conditions.

Acoustic Stimulation↗
PubMedDate not supplied

The critical intensity for occupational noise.

Decades of medical examinations have shown that large-scale risks of hearing defects exist not only from 90 dB(A) upwards, but even from 85 dB(A) upwards. This experience is confirmed by the analysis of 25,000 tone threshold audiograms and by the results of experimental hearing fatigue tests.

Audiometry, Pure-Tone↗