IEC 60645-2:2013 is an international standard that specifies basic acoustical and electroacoustical measurement procedures for airborne sound stimuli. It provides guidelines for measuring the acoustic characteristics of various audio devices, including microphones, headphones, and in-ear devices. These measurements are crucial in evaluating the performance and accuracy of such equipment, ensuring they meet industry standards.
Measurement Procedures
The standard outlines specific measurement procedures that need to be followed when assessing audio devices. Various aspects such as frequency response, sensitivity, and impedance are covered in detail. For instance, the frequency response is measured by sweeping a range of frequencies through the audio device and recording the output. Similarly, sensitivity is determined by measuring the electrical output level generated by a standardized acoustic input signal.
Calibration and Verification
Calibration plays a vital role in ensuring accurate and reliable measurements. The standard defines calibration methods for reference microphones used in the measurements to establish traceability and consistency. It also emphasizes the importance of regular verification checks to maintain measurement integrity over time. This ensures that the results obtained are consistent and comparable across different testing facilities and locations.
Importance of Compliance
Adhering to IEC 60645-2:2013 is crucial for manufacturers and designers in the audio industry. Compliance with this standard ensures that audio devices meet the required performance criteria and deliver accurate and reliable results. The standard also serves as a benchmark to compare different products in the market, helping consumers make informed decisions based on objective measurements and technical specifications.
Nina She