ANC Capability
We realize the ANC effect by two Stages:
（2）Production Stage

     •  The Deviation on microphone and loudspeaker, and the cavity in the assembly process, will impact the ANC effect.
     •  To reduce this impact and realize target ANC result , the noise reduction gain value needs to be fine tuned,                                              

1. R&D Stage: Optimized Product Filter Link Design
（1）Test in R&D stage:

     •  Frequency sweep test
     •  Sweep pressure test
     •  Phase test
     •  Thiele-Small test
•  Sensitivity test(Mic & speaker)
•  SNR test
•  Balance test
•  Rub&Buzz Testing
•   Impedance test
modified, on spot tested and burned