Extend range of LFO rate

[RCJacH]

Currently the maximum rate setting for a LFO is 512 Hz

There are some techniques in sound design which uses very fast random LFO generators to make oscillator sound fatter than just with detuning.

Can we double the rate range? Or as an alternative, can we include an "Extend range" option just like with the Pitch parameter?

[mkruselj]

Currently, Surge's modulation system works in blocks of 32 samples. This means that control rate is, at 48k, 48000/32=1500 Hz, with Nyquist limit at 750 Hz. But you will notice that due to linear interpolation between two 32 sample blocks, LFOs in Surge actually start aliasing sooner than that frequency. So. adding Extend range option is kinda useless how things stand today.

This is not an easy change, and it would considerably increase the CPU usage of Surge. We may attempt to speed up the control rate to 16 samples in XT2, maybe even 8 samples. But there is no concrete timeline for that release.

At any rate don't expect per sample modulation processing in Surge. This would be quite CPU intensive, as you can glean from Odin 2, for example.

[RCJacH]

Okay that's understandable, thank you for the explanation.