Use Room EQ Wizard To Extract

Your Dirac Live Calibration

1. Create the desired Dirac Live correction and load it into the miniDSP. Disable any additional PEQ, crossovers, delays, or other DSP that you do not want included in the captured filter.

2. Make an electrical measurement of the miniDSP, rather than measuring through the headphones. Send a broadband sweep from REW or similar measurement software into the miniDSP and record the miniDSP output back into an audio interface.

3. Make two measurements using exactly the same signal path: one with Dirac OFF and another with Dirac ON. Ideally use a common loopback timing reference so the measurements have the same time reference.

4. Calculate the complex division
   Dirac Filter = Dirac ON / Dirac OFF
   using REW Trace Arithmetic or equivalent software. This division cancels the DAC/ADC response and other parts of the common signal path, leaving the transfer function contributed by Dirac. Importantly, this must be a complexdivision using magnitude and phase, not simply subtraction of two frequency-response curves. REW's trace arithmetic can retain impulse/phase information when the measurements have compatible, properly timed impulse responses.

5. Convert the resulting transfer function back into an impulse response and export it as a WAV file. REW can export a measured impulse response directly as WAV, including 32-bit floating-point data.

That WAV impulse response is effectively a captured version of the Dirac mixed-phase EQ. It does not reveal Dirac's proprietary algorithm or original internal filter representation, but for an LTI Dirac correction it reproduces the filter's input-to-output behavior: magnitude response and phase response. That distinction is important. Simply recreating Dirac's frequency curve with parametric EQ would lose the mixed-phase portion of the correction.

You can then load the captured WAV into any EQ or audio system that supports FIR convolution. For example, Roon's convolution engine accepts WAV impulse responses, Equalizer APO supports convolution from impulse-response files, and CamillaDSP can load WAV files as FIR filters. For stereo headphones, you would normally capture the left and right Dirac filters separately and either load them as individual channel filters or combine them into a stereo WAV.

One technical detail is especially important when preparing the exported impulse. Do not move the main impulse peak all the way to sample 0. A mixed-phase Dirac filter can contain meaningful energy before the main peak—effectively the pre-response required for its phase correction. You can remove unnecessary pure transport delay introduced by the miniDSP, but you must leave enough samples ahead of the main impulse to preserve that pre-response. Likewise, avoid converting the captured response to "minimum phase" during export, because doing so would specifically discard the mixed-phase behavior you are trying to preserve. REW provides options to control the exported IR, its window, sample position, normalization, and sample count.