It does not replace the noise cancelling headsets since it does not properly cancel the noises but by automatically setting the output sound volume, it "masks" the noises.

Designed for transportations or at work.

Feat:
- User's mp3 compatible
- 3 different built-in noise masks
- Run in background
- Possibility to adjust the mic sensitivity
- Possibility to adjust the min & max output volume

最近没有更改。