Rich Notes supports dictation via the iOS Siri Feature. Instead of typing, tap the microphone icon on the keyboard. Then say what you want to say and Siri listens. Tap Done, and your words are converted to text.
If you do not see the microphone icon, make sure that Dictation is enabled in your device settings:
Turn on Dictation: Go to, Settings > General > Keyboard > Dictation.
Siri dictation is available on iPad 3rd Gen and iPhone 4S or newer devices.