Effect of Fixing Different Positions of the Wire Linked to FMT on FMT Vibration / 听力学及言语疾病杂志

ABSTRACT

Objective To find an optimum fixed position on the wire linked to floating mass transducer(FMT)by measuring FMT vibration with laser doppler vibrometer(LDV).Methods Fixing three points on the wire linked with FMT:10 mm,5 mm away from the FMT and the end of the wire.The vibration intensity of the FMT was measured with LDV when the FMT received continuous pure-tone stimuli at 100 and 80 dB SPL,respectively.Results The vibration amplitude of FMT was the highest at 1.5 and 2 kHz,and the lowest at 0.25 and 8 kHz when the FMT received pure-tone stimuli from 0.25 to 8 kHz.When the wire was fixed at/above different points,the FMT produced similar positive vibration amplitude.Conclusion The wire is fixed linked with FMT at/above three different points,FMT produces similar vibration amplitude when receiving pure tone stimuli.