how to implement and show Sound Amplitude graphically on iOS?

Question

The task is to show amplitude of the voice spoken into the Mic of the phone and show the amplitude like this:

Can someone please guide me how can i achieve this.

Thanks everyone.

Answer 1

is not so easy..

you can check:

• for the "animated wave graph" you can check Apple example "aurioTouch"
• for handling audio you can check also "SpeakHere"

Answer 2

Look into Core Graphics and drawRect.

Helped you search:

How do I draw a line on the iPhone?

Answer 3

I believe this can be done only by core plot framework.. you can look here at Brad larson's answer.