| Headroom....is exactly as it states.
If you standing in a room and your 6 feet tall and the room has a ceiling of 10 feet then the room above your head is 4 feet....headroom!
It's exactly the same thing in audio or practically any bandwidth related topic.
From a nominal level like say 0db say 100db SPL how much room above that can the amplification system provide before clip.
Clipping is a precise point and measured level and can be determined with a scope and a sine wave on any given system or chain of amplification.
So if your system can provide +30db above 0db without clipping then your headroom is 30db.
Dynamic Range on the other hand is the complete range.
If your noise floor or point at which you can detect noise is say -60db and your system is capable of +30db before clip you have a dynamic range of +30 to 0 to -60 or 90db of dynamic range. |