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Giving vocals a consistent volume through the mix

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Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 15, 2019 4:56 pm
by The Elf
Have I successfully scared everyone into stupefaction?! :lol:

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 15, 2019 6:24 pm
by blinddrew
We're cogitating...

Or waiting until we're at a screen where we can zoom in enough on the screen shots to see what's actually going on! :)

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:15 pm
by The Elf
Image

Image

Image

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:20 pm
by Wonks
As clear as Brexit so far.

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:29 pm
by Wonks
Possibly because you've posted two pictures of a low pass filter, when you wanted one low pass, one band pass and one high-pass filter.

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:37 pm
by Wonks
And without being able to see where the outputs of the channels are being sent to (I can see where aux sends are going) it's impossible to work out the full routing path.

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:37 pm
by The Elf
Wonks wrote:Possibly because you've posted two pictures of a low pass filter, when you wanted one low pass, one band pass and one high-pass filter.
Nope - it's correct as shown. It's all about polarity and routing. Take another look!

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:38 pm
by The Elf
Wonks wrote:And without being able to see where the outputs of the channels are being sent to (I can see where aux sends are going) it's impossible to work out the full routing path.
It's all there - top of the channels.

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:41 pm
by Wonks
No, not getting it. And the second photo shows the audio has already come from a high pass filter, so it is effectively a band-pass filter for the mids.

I know you know what you're doing, but it's not as easy to let us know what you are doing.

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:41 pm
by Wonks
The Elf wrote:
Wonks wrote:And without being able to see where the outputs of the channels are being sent to (I can see where aux sends are going) it's impossible to work out the full routing path.
It's all there - top of the channels.

:thumbup: missed that - all rather small.

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 3:59 pm
by The Elf
OK...

What is happening is this:

The original audio is split, using sends, to three 'Mult' channels, each containing a filter. The original channel has no output destination (though it could be routed to its inversion channel, I suppose - more on that later).

'Mult Lo' gets a LPF that limits it to frequencies below 200Hz.
'Mult Md' gets a LPF that limits it to frequencies below 2kHz.
'Mult Hi' gets a instance of the same filter, but I don't switch on any processing in there - it's simply to ensure that any oddities of the plug-in (delays, distortions, etc) are present in each band. Strictly speaking it needn't be there.

'Mult Lo' is sent to a channel where it is inverted in polarity and this inverted version sent to 'Mult Md' and 'Mult Hi'. This cleanly removes anything below that set 200Hz frequency from both the 'Mult Hi' and Mult Md' channels.

'Mult Md' is sent to a channel where it is inverted in polarity and this inverted version sent to 'Mult Hi'. This cleanly removes anything below that set 2kHz frequency from the 'Mult Hi' channel.

(The inverted channels are not routed to an output, as I only need them for their sends).

Essentially the splitting job is now done. I now route the three 'Mult' channels to corresponding 'Process' channels, where I can do whatever I want to each band - trim, compress, expand... anything.

The last channel on the right is simply an inverted version of the original source. Un-muting this should give an absolute null at the stereo output - proving that no artefacts are being created by the splitting process - and it does do just that.

The whole point of this is to avoid using LPF, Band and HPF filters, since these create anomalies at their cross-overs. My method nulls all such anomalies.

Hope that begins to make sense! :)

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 4:06 pm
by blinddrew
Aha, it all makes sense now. :)

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 4:53 pm
by Hugh Robjohns
I've done a block diagram which might be helpful to reveal what's going on:

three band filter structure.png

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 4:54 pm
by Watchmaker
I obviously need to quit my day job.

Re: Giving vocals a consistent volume through the mix

PostPosted: Fri Mar 22, 2019 5:16 pm
by The Elf
Hugh Robjohns wrote:I've done a block diagram which might be helpful to reveal what's going on...
...which proves beyond any reasonable doubt that Hugh is far cleverer than me! :lol:

Nicely summed up! :thumbup: :clap: