Test Project & Principle：
| Test Project | Test Principle | |
| Microphone | Mic FR | 1.Benchmark speaker playing sweep frequency; 2. The main and secondary microphones of the DuT record at the same time, and then re-cord again in the blocked state; 3.The software adopts harmonic analysis; 4. Calculate frequency response/distortion/sensitivity and the difference before and after plugging; 5.Addition and subtraction are compensated according to standard values. |
| Mic THD(Total Harmonic Distortion) | ||
| Mic Phase | ||
| Mic Phase | ||
| Mic Seal FR | ||
| Speaker | Speaker FR | 1.The DuT speaker emits a software-defined sweep 2The artificial ear also makes sound recordings 3.The software adopts harmonic analysis 4.Calculate frequency response/distartion/phase 5.Addition and subtraction are compensated according to standard values |
| Speaker THD | ||
| Speaker R&B | ||
| Loopback | Speaker-Mic Loopback | 1.Command/script control product one speaker sound and all microphones record 2. Complete the other speakers in turn and record all the micraphones 3The software performs fundamental wawe analysis and calculates trequency respanse |
| Far Field | Chamber Environment | 1.Command/script control product one speaker sound and all microphones record 2. Complete the other speakers in turn and record all the micraphones 3The software performs fundamental wawe analysis and calculates trequency respanse |
