Rebecca Heineman Engine

Rebecca Heineman Engine is a sound engine created by Rebecca Heineman. It was later modified by Rebecca Heineman and John Carmack.

Although the music format has some similarities, the differences between the two sound driver command-wise are massive due to the nature of how they're played: the earlier one, used only in RPM Racing, played all of its music within the SPC700 itself. The later one, on the other hand, used in Wolfenstein 3D and Super 3D Noah's Ark, played its music via streaming the note data from the SNES to the SPC700.

For this reason, this has been split into two pages for disambiguation reasons:

• RPM Racing
• Wolfenstein 3D/Super 3D Noah's Ark

The build sorting notes for both versions can be found here.

References

• Rebecca Heineman's tweet on the evolution of the sound engine
• Eludevisibility - Super 3D Noah's Ark Source Code (containing sound driver programming credits)