[Ardour-Users] Peak levels on master bus vs single track

Will Godfrey willgodfrey at musically.me.uk
Thu Mar 2 15:03:31 PST 2017

On Thu, 2 Mar 2017 23:51:51 +0100
Alf Haakon Pietruszka Lund <alf at mellomrommet.no> wrote:

> On 02. mars 2017 21:39, Robin Gareus wrote:
> <snip>
> > The signal level of a sum of 2 signals may be higher (up to 6dB in case
> > of 2 signals) or it may be lower in case some parts cancel each other out.
> >
> > If you sum two tracks both having the same sine-wave at -6dBFS, the
> > result (on master) is 0dBFS [1].  
> One of the reasons I was surprised was that it was 'the sum' of ONE 
> TRACK peaking differently in Master Bus. I should have mentioned in my 
> OP that I was checking with a single track as well as with combinations 
> of tracks.
> Paul's answer really is the right - the track meter (peak) is configured 
> differently from the master meter (RMS / K).
> And if I understand those readings I did correctly [1], the Master Bus 
> peaking at 0.9 is not really 'clipping'...
> Regards, Al F

Getting back on topic, I'm finding this very interesting. It all fits in quite
closely with the Sound On Sound forum, where metering comes up frequently!

Will J Godfrey
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.

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