#73 AudioIoRt: Create real-time capture & playback object

[Nick]

Create a real-time audio capture & playback object:

• So a microphone can be recorded
• So captured audio can be processed and sent out of the sound-card
• After experimentation, perhaps only a AudioCaptureRt object is needed
  • Can captured audio be sent to an AudioPlaybackRt object and be keept up to date?
  • Probably need to have both capture and playback with one protaudio object (but we'll have to find out)
• Create a real-time example, perhaps capturing audio on a mic and performing a vocoder or dalek-like effect