Live Microphone : announcements mike is very simple app just sends audio from the mic to the speaker
plug it into your computer or whatever using a 3.5mm male to male headphone jack and you get a free mic.

You can use it for voice chatting recording and recognition.
It has nearly unnoticeable lag (depending on transport and environment)
just like REAL microphone devices!

You can have fun using Microphone Live app sing and show them you capabilities.

The connection between PC and Android phone can be via Bluetooth
USB.

It isn't possible to make a lag free mic on Android yet but it's good enough for emergency use.
How to use:
1. Connect your device to an external speaker and speak in front of the internal microphone
2. Use a deconcentrator/an adapter (e.g. iRig) connect an external speaker and microphone

It is suitable for:

1. Music Performance
2. Presentation
3. Outdoor Activity
4. Audio Amplification