A blue dot next to an audio or video file in iTunes indicates that you have not yet listened to or watched the media file. This marker helps you quickly find media files that you haven't yet heard or watched and allows you to automatically synchronize unplayed media to your iPod.
Headland definition: A headland is a narrow piece of land which sticks out from the coast into the sea. | Meaning, pronunciation, translations and examples English Dictionary | Thesaurus | Translator | Grammar | Scrabble | Blog
Headroom (audio signal processing) In digital and analog audio, headroom refers to the amount by which the signal-handling capabilities of an audio system exceed a designated nominal level. Headroom can be thought of as a safety zone allowing transient audio peaks to exceed the nominal level without damaging the system or the audio signal, e.g., via clipping.