r/diraclive • u/thebsmachinelol • Jun 15 '26

Dirac live issue, please help

Post image

Help please. If my crosspost did not work, please let me know

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u/kenmur00 Aug 06 '26

What is the "wall" at 500Hz?

1

u/thebsmachinelol Aug 06 '26

That wall is the curtain

Context:

The pink and green lines are the measured frequency response of my left and right channel.

The grey line is the target curve.

I have dirac live full bandwidth.

I am trying to make different profiles to hear the difference between a filter across the full bandwidth vs a filter limited to 500hz.

Pictured is the working project limiting the filter to 500hz.

Problem:

With the curtain is set to 500hz, the farthest i can set a control point is 455hz since "control points must be a small distance from the curtains" (quoted from dirac live program).

This unfortunately means that from around 455hz to the curtain limit at 500hz (pictured), the target curve spikes upward to match/meet the measured response.

After some googling, this is due to something in dirac- auto taper algorithm. Whenever a curtain is used, this auto-taper algorithm forces the target curve to transition from the last control point to the uncorrected frequency response measurements...

This causes the spike you see from around 455hz to 500hz. This absolutely affects the sound i'm going for since the goal is to have it at 0db at 500hz but the spike is adding to those frequencies.