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[Bone conduction receiver for the measurement of the auditory thresholds over a broad frequency range]
Meditsinskaia Tekhnika
|November 1, 1982
Summary
This study introduces a piezoelectric bone telephone capable of measuring hearing thresholds across an expanded 0.25 kHz to 20.0 kHz frequency range. This overcomes limitations of electromagnetic devices, enabling broader audiological assessments.
Area of Science:
- Audiology
- Biomedical Engineering
- Transducer Technology
Context:
- Limitations of existing electromagnetic bone conduction devices at higher frequencies (>6 kHz).
- Need for expanded frequency range in bone conduction audiometry.
- Development of novel audiological testing equipment.
Purpose:
- To describe a piezoelectric bone telephone for determining audible thresholds.
- To analyze the limitations of electromagnetic bone telephones.
- To demonstrate the feasibility of measuring audible thresholds up to 20 kHz using piezoelectric technology.
Summary:
- A piezoelectric bone telephone was developed to measure audible thresholds via bone conduction from 0.25 kHz to 20.0 kHz.
- Fundamental limitations of electromagnetic bone telephones above 6 kHz were identified.
- Analysis of the piezoelectric transducer's equivalent circuit confirmed the potential for extended frequency range measurements.
Impact:
- Enables more comprehensive audiological assessments by extending the measurable frequency range.
- Offers a potential alternative to electromagnetic devices for bone conduction threshold determination.
- Provides a model conforming to IEC recommendations for piezoelectric bone telephones.