Audiometer
（重定向自Tympanometer）
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![Ärztliche Gehöruntersuchung mit Tonaudiometer der 1970er. Der Proband sitzt in einer Hörkabine.](/Images/godic/202502/18/Fotothek_df_n-08_00001242451.jpg")
![Audiomètre de David Edward Hughes (1880)](/Images/godic/202502/18/'Professor_Hughes'_audiometer'._Wellcome_L00134512451.jpg")
An audiometer is a machine used for evaluating hearing acuity. They usually consist of an embedded hardware unit connected to a pair of headphones and a test subject feedback button, sometimes controlled by a standard PC. Such systems can also be used with bone vibrators, to test conductive hearing mechanisms.