# 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.

- Type: Case study
- Targets: Binary
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-04
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/KamiKitsune420/eloquence-decomp>
- Primary source: <https://github.com/KamiKitsune420/eloquence-decomp/blob/b025f9d3d06f2887291fb27e0132496631835511/README.md>
- Catalog page: <https://awesomerea.org/resources/eloquence-61-eci-case/>
- Record JSON: <https://awesomerea.org/resources/eloquence-61-eci-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/eloquence-61-eci-case/index.md)

## 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.

## Primary sources

1. <https://github.com/KamiKitsune420/eloquence-decomp/blob/b025f9d3d06f2887291fb27e0132496631835511/README.md>
2. <https://github.com/KamiKitsune420/eloquence-decomp/blob/b025f9d3d06f2887291fb27e0132496631835511/tools/eci_compare.py>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.