Bruel-Kjaer – 4157 IEC 60318-4

The Bruel-Kjaer 4157 IEC 60318-4 Artificial Ear is a high-precision acoustic measurement device designed to simulate the acoustic impedance of the human ear in accordance with IEC 60318-4 standards. This advanced ear simulator is widely used in research laboratories, hearing aid manufacturing, and quality control applications, ensuring accurate and repeatable test results.

Equipped with a high-quality microphone and preamplifier, the Bruel-Kjaer 4157 IEC 60318-4 Artificial Ear delivers exceptional sensitivity and precision. It enables engineers and researchers to accurately measure the performance of earphones, hearing aids, and other audio devices under standardized conditions. By replicating the acoustic properties of the average human ear canal, this device ensures that measurements closely match real-world listening scenarios.

The microphone integrated into the Bruel-Kjaer 4157 IEC 60318-4 Artificial Ear captures sound with high fidelity, while the preamplifier ensures a low-noise, high-output signal for accurate data acquisition. This combination makes it suitable for use in both R&D environments and production testing lines, where consistency and compliance with international standards are critical.

One of the main advantages of this artificial ear is its compliance with IEC 60318-4 specifications. This means it can be used in legal metrology, product certification, and research projects requiring standardized ear simulators. Its robust and precise design guarantees long-term stability, minimizing calibration needs and maintenance costs.

Applications for the Bruel-Kjaer 4157 model include:

• Hearing aid performance verification

• Earphone and headphone quality testing

• Acoustic research and calibration work

• Conformance testing to international audio standards

Manufactured by Bruel-Kjaer, a global leader in acoustic measurement solutions, the 4157 IEC 60318-4 Artificial Ear stands out for its durability, accuracy, and ease of integration with measurement systems. Its ergonomic design allows for quick setup, while its stable electrical and acoustic properties ensure reliable results over time.

In summary, the Bruel-Kjaer 4157 IEC 60318-4 Artificial Ear is the industry standard for precise and repeatable ear simulation. Whether for laboratory testing or production line verification, it provides engineers and researchers with the trusted performance needed to meet both regulatory and technical requirements in acoustic testing.