![]() ![]() The result is then referred to as the absolute hearing threshold. depending on whether the rising intensity is in descending or ascending order. This procedure gives a curve that is convexly curved downwards or upwards, i.e. Hearing threshold curve is defined by acoustically precise tones of different frequencies in Hz (X-axis) and the intensity or magnitude of sound pressure in dB (Y-axis). workers in noisy workplaces.Ībsolute hearing threshold It is used for orientation and screening of hearing disorders in selected groups in society, e.g. It allows the examination of hearing threshold at a few selected frequencies. It is one of the simplest types of audiometry.
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