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Hi there! I’ve been experimenting with the Waves Renaissance Channel plugin , and particularly the “Push the pop master” preset. It’s a pretty simple process. First, a +2db low-shelf at 250Hz and a +4dB high-shelf at ~ 3.3KHz. The EQ stage is followed by a compressor operating over the full mix, but with the side-chain bandpass filtered at 120Hz. When the preset values are tweaked a little bit, this setup yields quite a nice sound – not at all a substitute for professional mastering, but useful for quick demos. One of the particularly desirable attributes of the processing is that the compression causes the mix to kind of…congeal...really well. It breathes, if that makes any sense.

My question is: why does this “breathing” occur? The sound is markedly different from the pumping I get when I throw a compressor with no side-chain onto a full mix. And it’s also markedly different from the sound of band-limited compression, where both the detection and the compression are only on the passband. Why does detecting over a limited band but compressing over the whole mix produce this particular kind of sound?

Thanks in advance for your thoughts.

Jed

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anonymous Tue, 02/28/2006 - 18:41

My favorite trick with sidechain compressors is to sidechain the bass drum to the bass guitar, so every time the bass drum hits, it ducks the bass guitar. This helps a lot with preventing bass distortion in the mastering if you're looking for a mix to be mastered really loud. Not sure if that's the kind of thing you're looking for, but that's the only connection to mastering I could think of.