Today I was reading a post on a facebook group from a guy, let’s call him Jack, concerned with a master that was clean in the DAW and clipped when it played streaming from Soundcloud. He checked for intersample peaks and left some headroom (0.3dBFS) but still it clipped when streaming.
Then I went to get my afternoon coffee.
As I’m filling the cup I realized that I can use a cup of coffee to explain headroom. Bear with me a sec.
Here’s the cup. It only holds so much. Pour the coffee in, leave some room for cream and sugar, and some extra room to stir and to walk from the kitchen to the studio. Don’t leave enough room in the cup and it spills.
The coffee is the mix, the cream and sugar is the mastering, and the walk from the kitchen to the studio is the SoundCloud encode (or any lossy format conversion) and streaming. There wasn’t enough wiggle room in Jack’s master for the conversion to mp3, so some coffee got spilled while the drink was being delivered.
When I’m mastering I set my limiter ceiling to -0.7dBFS which is pretty close to the recommended -1dBFS level for Mastered for iTunes albums. I’d much rather have slightly lower peak levels for a cleaner master without any crunchiness on various playback systems.
Makes sense right?
BTW, if you’re interested in having me master one of your projects I can be reached at www.epicsounds.ca, I do free test masters.