O'Reilly logo

Windows® Phone 8 Unleashed by Daniel Vaughan

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Creating a Helium Voice App

They are a dime a dozen, and you may be surprised by just how simple it is to create a helium voice app, which can modulate the pitch of the user’s voice. This section creates a page that allows the user to record audio, which is saved to isolated storage, and to play back the sample with the option to change the pitch of the playback using a slider.

The code for this section is located in the Sensors/Microphone directory of the WPUnleashed.Examples project in the downloadable sample code.

The MicrophoneViewModel class includes the following two commands:

Image ToggleRecordCommandStarts the microphone recording if not recording; ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required