Stereo Tool
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Can't understand the audio processing order in Stereo Tool
https://forums.stereotool.com/viewtopic.php?t=7681
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Author:  Christmas [ Fri Apr 15, 2016 9:42 pm ]
Post subject:  Can't understand the audio processing order in Stereo Tool

I've just gotten and started using Stereo Tool, and I find it rather fantastic. :)
I don't do broadcast but I do audio alot, every day, using it as a VST plugin.

Though, I've got problems understanding the audio processing order in the plugin. I've scoured the manual to understand this but the manual kindof isn't designed with such a mindset. It doesn't cover such things.

I need to know what processing module the audio signal passes through first, then second, then third etc down to the last one. Which order.

For example, does the audio enter the plugin processing in the Repair module first, or the Processing module first?
If it enters into the Processing module first, does it work itself up from the bottom module, or down from the top module?
Or, perhaps it doesn't work that linear? Maybe some modules are interdependent on others? etc

If you care to know why, it's confusing because of several reasons. For example limiting is traditionally the very last step in audio signal chain, to protect the output against clipping causing distortion and unexpected loud sounds.
In Stereo tool though, there are many level limiters, in many different places. There is one in the bottom of the processing module collection, which then appears to be superseded multiband 'clipper' in the same module. There is also a "pre-emphasis" limiter in the very same dialog. As a sub-module to the limiting module there is also a singleband 'clipper' and also a 'bass note' clipper. Finally, the parent main Processing module setting has yet another limiter in there. Furthermore, in the Repair module - which is outside of the Process module hierarchy - there is yet another 'declipper'.
Other processing modules displays a slightly similarly confusing (to me) order.

I could use some direction to understand the signal chain or internal signal processing order or interdependencies. To understand what module does what, and in what order, is a big key to controlling the processing for a good sound.

Thx in advance for any help

Xmas

Author:  \_/ [ Sat Apr 16, 2016 9:55 am ]
Post subject:  Re: Can't understand the audio processing order in Stereo Tool

Generally everything works in order from top to bottom.

Only few modules can be moved, e.g. true bass can be placed before or after multiband.

ST evolved over time so there are a lot of old and new processing options. Doesn't mean you need to use them all.

There are many limiters and you can use earlier ones to prevent unnecessary spikes from reaching later modules.

The declipper is actually the opposite of a clipper, not another one.

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