Does Eventide Blackhole Have A Fixed Octave Shift?

[Geometrid]

Is there a fixed octave shift in Blackhole’s reverb tail? This hadn’t occurred to me before, but last night I read this old post by Sean from Valhalla, and when I tried the comparison he suggests, the results were very close. But the Valhalla Shimmer preset “Blackhole” has an octave shift on it, so that’s what made me wonder.

ValhallaShimmer (especially in the "mono" reverb mode) is the closest Valhalla plugin to Blackhole in the underlying architecture. A good starting point for comparison:

- ValhallaShimmer, with Blackhole preset (the default preset that Shimmer opens up with)
- Set Diffusion to 0.827
- Set Color Mode to Dark

You may want to adjust the Mod Rate and Depth to taste. Once you have done the above, ValhallaShimmer sounds REALLY CLOSE to the Black Hole algorithm in my DSP7000 hardware.

Sean Costello

[Funkybot's Evil Twin]

The Blackhole preset on ValhallaShimmer does indeed have the Shift set to +12 but the feedback is set to 0.00 so it has no impact on the sound. Change the shift value as play audio and nothing happens.

The Eventide Blackhole has no active shift in the feedback path either. Eventide's ShimmerVerb is the one that does that.

Think of ValhallaShimmer as a ShimmerVerb, but one that can also be configured to sound like the Blackhole when there's no pitch shifting happening.

[Geometrid]

Brilliant, thanks! I’m new to Valhalla Shimmer, so I didn’t realise the pitch shift had no impact when the feedback is set to zero. Now that you’ve pointed it out, it makes perfect sense.

Thanks again!