HTML5 and decibel counter

Question

Is there anyway using HTML5 and Javascript to capture the sound and get its decibel value? Can this be done on mobile devices using PhoneGap?

Answer 1

You cannot listen to audio through a browser unless you use something like Flash. Thus, PhoneGap MAY work on devices other than iPhone (without Flash support).

Despite the fact that PhoneGap does the Media API , you cannot just listen to the Mic input, instead it will start audio capture and give you access to the recorded audio.

However, you could write your own PhoneGap Plugin , which will provide you with this functionality.

Cm.

• http://mobileorchard.com/tutorial-detecting-when-a-user-blows-into-the-mic/ (Xcode)
• Android decibel meter (Android)

And as I mentioned above, you need to write your own PhoneGap plugin to use them.

Answer 2

DecibelMeter: Monitoring dB Levels Using HTML5 Audio API https://github.com/jasonpecor/DecibelMeter