Subjective Evaluation
Focused on end-user auditory experience, it evaluates audio devices like speakers and headsets, plus audio content such as music and film soundtracks via multi-user listening tests to match daily audio usage expectations.

Objective Evaluation
Widely used in R&D and production, it accurately measures audio equipment technical metrics to verify standard compliance and analyze audio algorithm performance. For speakers, it quantifies frequency response, distortion and other parameters for quality inspection and acoustic tuning.