Using the Audio sensing feature in Scratch

Attending the three day Junior Hackathon for Scratch is fruitful. Here’s some of the projects done during the workshop. By allowing the Adobe Flash Player accessing your Camera and Microphone, you may detect the level of audio through visual presentation such as the following projects.
These are the challenges that I have tried out.

The sound level is shown through the number of bars:

The meter using an arm as indicator: