miidio Noise Meter

miidio Noise meter is one of the toolkit projects. It calculates the sound pressure level in dB with your smart phone. It is based on partial components of miidio Recorder and done some improvements. miidio Noise meter is simple and pure.

miidio Noise meter has the following features:
1. SPL calculation
2. maximum SPL
3. manual calibration
4. multiple refreshing frequency.

We will do our best to add more and more features to it.