Quote:
Originally Posted by bezusheist
at 0 dBFS is not clipping, over 0 dBFS is clipping...
|
Are you sure about that? Maybe you are right, but I'm not sure. I'm thinking of the fixed-point representation you get when you render to 16-bit or 24-bit PCM.
For example, suppose you're rendering to 2-bit PCM. 2-bit PCM samples can take 4 values total:
11
10
01
00
Reordering to put 0 in the middle:
01
00
11
10
But there is no middle, since the number of possible values is even. Different audio software deals with this dilemma in different ways. Some might map like this:
Code:
+1.0 amplitude -> CLIP
+0.5 amplitude -> 01
0.0 amplitude -> 00
-0.5 amplitude -> 11
-1.0 amplitude -> 10
In that case, 0 dB may or may not be a clip, depending on whether it corresponds to -1.0 amplitude or +1.0 amplitude.
16-bit and 24-bit PCM have the same issue. I don't know how Reaper maps floats to fixed-point PCM, but it's a factor.