The widths of excursion on Békésy audiogram are commonly calculated by means of obtaining mean value of widths in dB between each top and bottom of recorded zigzag tracing. But, by this method the calculation is rather time consumptive.
The authors devised a calculating method of the width of excursion for the purpose of saving time.
Firstly, the widths of excursion of 2.5, 5.0, 7.5, 10.0, 12.5 and 15.0dB were accurately recorded as zigzag tracings on a paper of audiometer. And then, the recording time of drawing 20 of tops and bottoms on each tracing was measured.
The recording times and the widths of excursion showed linear function.
In the patients, the widths of excursion were practically able to be calculated easily by this function.
