The invention provides a labeling and content authoring scheme that enables seamless labeling, authoring, and playback of authored content, e.g., audio. In an embodiment of the invention, an apparatus comprises a scanner for acquiring an index value associated with a label, a microphone for recording...http://www.google.de/patents/US20030089777?utm_source=gb-gplus-sharePatent US20030089777 - Method and system for authoring and playback of audio coincident with label detection
