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, modified, on spot        tested and burned

1. R&D Stage: Optimized Product Filter Link Design
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