AudioProcessorGraph: Clicks & Pops

[bluemonkey]

Hi all,

I’m currently building a plug-in that uses an AudioProcessorGraph to cascade different audio effects in a similar way as the JUCE AudioPluginHost. When connections are added/removed, clicks and pops occur. Gain ramping seems to be the thing I’m looking for, but I was wondering if anybody knows of nice way to implement this with the AudioProcessorGraph.

My current version uses juce::LinearSmoothedValue. It fades the output gain to 0, adds/removes the connection and then fades it back up again. It feels kind of overengineered and inefficient though. Anybody got an idea?

Greetings,
Kev

[johngalt91]

@bluemonkey

My current version uses juce::LinearSmoothedValue. It fades the output gain to 0, adds/removes the connection and then fades it back up again.

That’s basically what is need to be done. The only more efficient solution would be stopping all audio processing (i.e a global “noProcess” flag in the beginning of each processBlock that returns if true), but it would be an uglier solution and I can’t guarantee it won’t create some pops in some situations. Tbh fading the gain is pretty cheap in modern CPUs.