Dirac Live Curve Editor Excel Tool


The Simple Home Cinema Dirac Live Curve Editor Excel Tool is provided as complimentary with Dirac Live Perfection as a way to enable you to edit the Dirac Live Target files and enable Loudness Compensation.

This is useful for the following reasons:

  1. You can precision-edit the curve so that it is exactly what you want
  2. You can enable different base curves
  3. You can enable emulate different Loudness Compensation Solutions


The tool provides the following features:

Base Curves for Loudness Compensation

Ability to select from 5 pre-defined curves as below.

Audyssey Reference Base Curve
SHC1 Base Curve

Apply Custom Modifications

You can apply custom changes to the curve so you are better able to blend the sub response for example. This is useful when measuring and correcting low-end frequency response after Dirac Live has run.

Select Different Loudness Compensation Strategies

You can choose from emulating Audyssey Dynamic EQ, YPAO Volume, ISO 226 or two blended approaches. SHC1 blends ISO226 and Audyssey emulation data with high frequency correction, while SHC2 disables high frequency correction.

You can configure loudness compensation with the offset, your listening volume and get a curve output you can edit Dirac Live 3.0 Target Files with. You can also see the surround volume increase you need to use (both full rate and half rate which are explained in Dirac Live Perfection.

See below for the curve that’s generated with SHC1:

Curve that’s generated with Audyssey Reference Base Curve and SHC1 Loudness Emulation Data
Curve that’s generated with Audyssey Reference Base Curve and SHC2 Loudness Emulation Data

Add Custom Curves or Create Your Own

There are additional custom curves provided for your convenience. They are provided for completeness and can be useful when troubleshooting. You van also create additional custom curves if you would prefer to use a different base curve.

How to Get & Support

The tool is only available and is complementary with Dirac Live Perfection. The user guide is included in Section 6. Loudness Compensation section of the manual. I provide support for the tool for owners of the manual.


Loudness compensation data for Audyssey and YPAO was measured and mapped by me. ISO226 data is adopted from the ISO226:2003 international standard.

Shout out to DeLub and Ratbuddy on AVS for originally mapping the Audyssey and more popular curves.

While their data was adopted, please note that the tool includes updated data that is more precise especially in the high-end to avoid “ripples” in the frequency response. It also includes base curves that are unique to the guide, as house curves cannot be used as a basis for loudness compensation.

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