Related Experiment Videos
Assessment of bone conduction prosthesis in situ
1University of Oulu, Department of Otolaryngology, Finland.
Revue De Laryngologie - Otologie - Rhinologie
|January 1, 1995
Summary
A new method uses accelerometers to measure bone conduction hearing aid vibrations, reducing the need for lengthy patient testing. This technique offers a more efficient way to adjust and compare hearing aid performance.
Area of Science:
- Audiology
- Biomedical Engineering
- Signal Processing
Background:
- Conventional bone conduction hearing aids require time-consuming psychoacoustic audiometry for adjustment.
- Existing free-field testing methods can be demanding for patients.
Observation:
- A novel method utilizes accelerometers to capture hearing aid-induced skull vibrations.
- Recordings are analyzed using Fast Fourier Transformation (FFT) with a signal processor.
Findings:
- White noise signals effectively monitor changes in frequency characteristics.
- Pure tones reliably analyze harmonic distortion and dynamic response.
- Calibration based on individual bone-conduction thresholds allows inter-individual comparisons.
Implications:
- This technique offers a more efficient and less demanding approach to hearing aid testing and adjustment.
- Objective measurement of skull vibrations can improve the precision of hearing aid fitting.
- The method facilitates reliable inter-individual comparisons for better hearing aid selection.