The electroacoustic performance of the emergency call system (eCall) is tested and verified mainly in accordance with ITU-T P.1140 Speech communication requirements for vehicle emergency calls, GOST 33468 Audio test standard for ERA-GLONASS on-board emergency call systems, and GB/T 45314-2025 Road vehicles — Performance requirements and test methods for hands-free communication and voice interaction.

As competition in the automotive industry intensifies and high-end acoustic configurations become mainstream for intelligent cockpits, excessive hardware stacking has turned into an industry trend. Against this backdrop, establishing a scientific vehicle-mounted acoustic evaluation system, balancing hardware parameters with actual auditory experience, and linking objective testing results to subjective perception have become core challenges in the field of intelligent cockpit acoustics.

Within the modern aviation pilot training system, high-end simulators equipped with six-degree-of-freedom motion platforms, ultra-wide field-of-view visual systems and high-fidelity acoustic environments can undertake 70% to 90% of training tasks that would otherwise require real flights. It is worth emphasizing that a high-fidelity acoustic environment is far more than simple audio playback; it refers to dynamic acoustic simulation technology that performs dynamic signal processing based on pilot control inputs and actual simulated operating conditions.