Audiometer Calibration System for Pure Tone and Impedance Audiometers
This Audiometer Calibration System provides an integrated solution for the verification, calibration, development and quality control of pure-tone and impedance audiometers.
It combines acoustic analyzers, ear simulators, acoustic couplers, a mechanical coupler, pressure measurement equipment, standard volume cavities and dedicated measurement software.
- System Type: Integrated verification/calibration solution
- Applicable Devices: Pure-tone audiometers, impedance audiometers, tympanometers
- Measurement: Acoustic, mechanical, pressure, cavity-volume
- Standards: IEC 60645-1, IEC 60645-5
- End Users: Metrology institutes, calibration labs, manufacturers
- Configuration: Turnkey system or custom lab setup
Audiometer Calibration System Product Overview
The Audiometer Calibration System is designed for metrology institutes, calibration laboratories, third-party testing organizations and audiometer manufacturers that require a coordinated measurement solution rather than separate test instruments.
Unlike a standalone sound analyzer or acoustic coupler, the Audiometer Calibration System covers different audiometer transducers and measurement principles within one configured platform. The appropriate ear simulator, acoustic coupler or mechanical coupler is selected according to the transducer type and applicable standard.
Dedicated software guides the operator through the measurement process, applies stored correction data, calculates results, compares measured values with predefined limits and generates test records. By combining acoustic, mechanical, pressure and cavity-volume references, the Audiometer Calibration System reduces the integration work required when establishing a new audiometer calibration capability.
One coordinated platform
Measurement hardware, reference devices and software are configured together.
Pure-tone and impedance
Supports both audiometer categories without building two separate systems.
Laboratory and manufacturing
Suitable for routine calibration, R&D adjustment and quality control.
Technical Specifications
The following Audiometer Calibration System specifications are based on the available technical materials. Final values are subject to the approved configuration and calibration documentation.
| Item | Reference Requirement |
|---|---|
| Ear Simulator Frequency Range | Typically 20 Hz to 10 kHz, depending on simulator type |
| Supra-Aural Acoustic Coupler Range | 125 Hz to 8 kHz |
| Occluded-Ear Simulator Range | Typically 20 Hz to 10 kHz for the specified configuration |
| 2 cm³ Acoustic Coupler Range | 125 Hz to 8 kHz |
| Mechanical Coupler Range | At least 125 Hz to 8 kHz |
| Mechanical Coupler Expanded Uncertainty | 1.5 dB, k=3 |
| Acoustic Measurement Expanded Uncertainty | Up to 0.6 dB, k=2, for specified simulator and coupler configurations |
| Conditioning Amplifier Range | 20 Hz to 20 kHz |
| Conditioning Amplifier Frequency Response | Maximum permissible error ±0.3 dB |
| Conditioning Amplifier Level Linearity | Maximum permissible error ±0.4 dB |
| Acoustic Analyzer Range | 20 Hz to 20 kHz for the specified configuration |
| Acoustic Analyzer Frequency Response | Maximum permissible error ±0.2 dB |
| Acoustic Analyzer Indication | Maximum permissible error ±0.2 dB |
| Frequency Measurement | Maximum permissible error ±0.1% |
| Pressure Measurement | Maximum permissible error ±0.2% of full scale |
| Headband Force Measurement | 0 to 15 N |
| Headband Force Maximum Permissible Error | ±0.1 N |
| Standard Cavity Range | 0.1 cm³ to 8.0 cm³ |
| Standard Cavity Quantity | At least 11 cavities |
| Cavity-Volume Tolerance | ±2% of nominal value or 0.05 cm³, whichever is greater |
System Coverage
The Audiometer Calibration System combines two specialist workflows for air-conduction, bone-conduction and impedance/admittance audiometer measurement.
Pure Tone Audiometer Calibration System
The Pure Tone Audiometer Calibration System supports the calibration and performance evaluation of air-conduction and bone-conduction audiometers.
- Supra-aural earphones
- Circumaural earphones
- Insert earphones
- Bone vibrators
Frequency
Linearity
Distortion
Impedance Audiometer Calibration System
The Impedance Audiometer Calibration System is intended for impedance/admittance audiometers and tympanometers with probe-tone and acoustic reflex functions.
- Probe-tone channels
- Ipsilateral acoustic reflex channels
- Contralateral acoustic reflex channels
- Pressure and cavity-volume indication
Acoustic Reflex
Pressure
Cavity Volume
Audiometer Measurement Scope
Pure-Tone Measurement
- Output sound pressure level
- Hearing-level reference-zero verification
- Bone-conduction output force level
- Test signal frequency
- Level linearity
- Harmonic distortion
- Earphone headband force
- Applicable timing characteristics
For air-conduction measurements, the earphone is connected to the appropriate ear simulator or acoustic coupler. Bone vibrators are applied to a mechanical coupler or artificial mastoid under a specified static force.
Impedance and Tympanometer Measurement
- Probe-tone frequency
- Probe-tone sound pressure level
- Ipsilateral reflex signal level
- Contralateral reflex signal level
- Harmonic distortion
- Pressure indication
- Standard cavity-volume indication
The Audiometer Calibration System uses defined acoustic cavities, ear simulators and pressure references to evaluate acoustic and pressure-related performance.
How the Measurement Works
In each Audiometer Calibration System workflow, the audiometer transducer is connected to a standardized acoustic or mechanical load before the measurement data is evaluated by the software.
Select the Interface
Select the suitable ear simulator, coupler, mechanical coupler or standard cavity.
Acquire the Signal
Measure acoustic pressure, vibratory force, frequency, pressure or cavity response.
Apply Corrections
Use stored simulator sensitivities and reference data to calculate the result.
Evaluate and Record
Compare results with configured limits and generate a structured measurement record.
Key Features
The Audiometer Calibration System is designed around the operating requirements of professional calibration laboratories and audiometer manufacturers.
01
Integrated Measurement Chain
Combines acoustic, mechanical, pressure and cavity-volume measurement equipment.
02
Broad Transducer Coverage
Supports supra-aural, circumaural and insert earphones as well as bone vibrators.
03
Guided Software Workflow
Guides operators through measurement, correction, calculation and result evaluation.
04
Integrated Reference Data
Stores and applies reference-zero values, simulator sensitivities and correction data.
05
Automatic Evaluation
Compares measured results with configured limits for clear pass/fail interpretation.
06
Test Record Generation
Produces structured records for calibration, quality control and development work.
07
R&D Adjustment Support
Helps identify deviations and compare performance before and after adjustment.
08
Flexible Configuration
The Audiometer Calibration System can be supplied as a complete package or integrated with existing equipment.
Applicable International Standards
The Audiometer Calibration System can be configured around the following audiometer, ear simulator and reference-zero standards.
| Standard | Application |
|---|---|
| IEC 60645-1:2017 | Equipment for pure-tone and speech audiometry |
| IEC 60645-5:2004 | Instruments for measuring aural acoustic impedance/admittance |
| IEC 60318-1:2009 | Ear simulator for supra-aural and circumaural earphones |
| IEC 60318-3:2014 | Acoustic coupler for supra-aural audiometric earphones |
| IEC 60318-4:2010 | Occluded-ear simulator for insert earphones |
| IEC 60318-5:2006 | 2 cm³ coupler for insert earphones |
| IEC 60318-6:2007 | Mechanical coupler for bone vibrators |
| ISO 389 Series | Reference zero for the calibration of audiometric equipment |
Typical System Configuration
A typical Audiometer Calibration System may include the following reference devices, measurement instruments, adapters and software.
| Component | Reference Model or Description | Quantity |
|---|---|---|
| Multifunction Acoustic Analyzer | AWA6292 or approved equivalent | 1 |
| Sound Calibrator | AWA6021A or approved equivalent | 1 |
| Artificial Mastoid / Mechanical Coupler | Model 4930 or approved equivalent | 1 |
| Conditioning Amplifier | Matched to the measurement chain | 1 |
| 6 cm³ Acoustic Coupler | Model 317-J or equivalent | 1 |
| IEC 60318-1 Ear Simulator Set | Model 318-J or equivalent | 1 |
| Occluded-Ear Simulator and Adapters | Model 711-J or equivalent | 1 |
| 2 cm³ Coupler and Adapters | LXY-2CC-1 or equivalent | 1 |
| Frequency Counter | Laboratory-grade configuration | 1 |
| Earphone Headband Force System | LXY-TGFM or equivalent | 1 |
| Standard Weight | 510 g | 1 |
| Standard Volume Cavity Set | 0.1 to 8.0 cm³, 11 cavities | 1 set |
| Digital Pressure Meter | LXY-SZYLJ or equivalent | 1 |
| Audiometer Measurement Software | 15-PATSLM-2 or current version | 1 |
| Connection Cables and Adapters | According to the approved configuration | 1 set |
| Computer or Display Device | According to project requirements | 1 |
Typical Applications
An Audiometer Calibration System can support calibration, verification, development and quality-control work in the following professional environments.
Metrology Institutes
Establish or extend pure-tone and impedance audiometer verification capability.
ISO/IEC 17025 Laboratories
Perform repeatable measurements using traceable reference equipment and structured records.
Third-Party Testing
Evaluate audiometers used by hospitals, hearing centers and medical equipment suppliers.
Audiometer Manufacturers
Use the Pure Tone Audiometer Calibration System for R&D, output adjustment and quality control.
Tympanometer Manufacturers
Use the Impedance Audiometer Calibration System to verify probe tones, pressure and cavity volume.
Medical Engineering Departments
Support equipment comparison, performance checks and internal quality management.
Installation, Training and Documentation
Compliance & Regulatory Assurance
Compliance & Regulatory Assurance
The Audiometer Calibration System supports the verification and calibration of pure-tone audiometers, impedance audiometers and tympanometers according to IEC 60645-1:2017 and IEC 60645-5:2004.
Final conformity depends on the selected configuration, reference-equipment traceability, measurement uncertainty, test procedure and applicable standard edition. Relevant calibration and test documentation can be confirmed according to project requirements.
Applicable StandardsIEC 60645-1:2017
IEC 60645-5:2004
Test ObjectsPure-tone and impedance audiometers
Key VerificationLevel, frequency, distortion, pressure and volume
DocumentationCertificates, test records and traceability files
Technical Inquiry & Expert Support
To confirm whether the Audiometer Calibration System matches your laboratory requirements, please provide the key information below when submitting an inquiry. This helps our technical team confirm the applicable standards, audiometer type, transducer configuration, measurement scope and required documentation before quotation.
| Information Needed | Description |
|---|---|
| Applicable Standard | IEC 60645-1, IEC 60645-5, relevant IEC 60318 or ISO 389 requirements, or the applicable national adoption used by your laboratory. |
| Audiometer Type | Confirm whether the device under test is a pure-tone audiometer, impedance audiometer or tympanometer, including its brand and model. |
| Transducer Configuration | Specify supra-aural, circumaural, insert or bone-conduction transducers, as well as probe-tone and acoustic-reflex channels where applicable. |
| Measurement Scope | Confirm the required frequency range and test items, such as output level, linearity, distortion, pressure indication or standard cavity volume. |
| Documentation Needs | Specify any required datasheets, calibration certificates, test records, software reports or traceability documentation. |
Note:
Final suitability should be reviewed together with the complete laboratory setup, existing reference equipment, required measurement uncertainty and applicable standard edition.
Audiometer Calibration System Detail Display
Audiometer Calibration System FAQ
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