Wolfson recently boasted a partnership with Audyssey, set to revolutionize audio recordings on mobile devices with Audyssey's so-called AudioFrame. Running on Wolfson's WM8280 Audio Hub solution, AudioFrame correlates the audio signals of two microphones to focus on the signal coming from the front (facing the smartphone's camera) and then reduces the uncorrelated ambient signals from the side.
Audyssey's AudioFrame microphone zooming feature
In effect, the recorded audio signal can be dynamically adjusted to match the video zoom, making the subject in the center of the frame sound closer.
That's more microphones directed at you -- think audio crowd-sourcing. If such audio zooming capabilities can be integrated into mobiles, you can bet they will combine well with audio analytics in surveillance cameras.
Audio analytics are already used to detect specific classes of sound (breaking glass, gunshots) or simply for keyword detection to trigger video data retrieval.