Case study

Eloquence 6.1: a C rebuild of ECI.DLL

Rebuilds ETI Eloquence 6.1.0.2, the US English ECI.DLL plus ENU.SYN, as C with a drop-in ECI.DLL for x86 and x64. This is KamiKitsune420/eloquence-decomp, a different tree from Mudb0y/openevv.

Targets: Binary
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-04

Stars: 8
Last commit: 2026-09-26
Language: C

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: The README's build is on Windows with Visual Studio, from PowerShell. Put your own ECI.DLL, ECI.INI, and ENU.SYN in pkg/. It prints MD5 6c39acb7c1f0f62b3cae019f45b224fc for ENU.SYN. It says those files are not in the repository and must not be added.
Scope: The README describes a hand-written formant synthesizer, Delta rules lifted by tools/delta_lift.py, and the remaining functions recompiled instruction by instruction with tools/x2c.py. The drop-in DLL is US English only.
Testing evidence: The README says klatt_check is bit-exact on 19,902 recorded frames, and that python tools/eci_compare.py runs every API script in tests/eci/ through the real DLL and the port, comparing calls, return values, callbacks, and samples.
License: The repository root has no LICENSE file; the README names no license.

Cite

BibTeX

@misc{eloquence-61-eci-case,
  title = {{Eloquence 6.1: a C rebuild of ECI.DLL}},
  howpublished = {\url{https://github.com/KamiKitsune420/eloquence-decomp}},
  url = {https://github.com/KamiKitsune420/eloquence-decomp},
  urldate = {2026-11-04},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/eloquence-61-eci-case/}}
}

Plain text

Eloquence 6.1: a C rebuild of ECI.DLL. https://github.com/KamiKitsune420/eloquence-decomp (accessed 2026-11-04). Awesome REA entry: https://awesomerea.org/resources/eloquence-61-eci-case/

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Primary sources

README.md GitHub · KamiKitsune420/eloquence-decomp · Revision b025f9d
tools/eci_compare.py GitHub · KamiKitsune420/eloquence-decomp · Revision b025f9d