Case study

L&H TruVoice: a portable C rebuild of tv_enua.dll

Rebuilds Lernout & Hauspie TruVoice 6.00 build 10, the SAPI 4 American English engine in tv_enua.dll, as C99. The port reads that DLL's tables at run time and checks PCM against the running engine.

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

Stars: 3
Last commit: 2026-09-23
Language: C++

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: Needs a C99 compiler and your own tv_enua.dll 6.00 build 10. The README says the engine is not in the repository and that the port reads its tables from that DLL at run time.
Scope: Ten named voices share one formant synthesizer. The README says src/gen_back.inc, gen_tag.inc, and gen_norm.inc are the engine's logic translated from a decompilation, and distinguishes those files from the hand-written C.
Testing evidence: The README's end-to-end row reports 330/330, 130/130, 230/230, 400/400, and 140/140 identical results for the listed text sets, and says x86 and x64 builds match each other. One command it names is python tools/e2e_text.py tests/hard.txt.
License: LICENSE is the MIT License, copyright 2026 KamiKitsune420. The original engine is not included.

Cite

BibTeX

@misc{lh-truvoice-decomp-case,
  title = {{L\&H TruVoice: a portable C rebuild of tv\_enua.dll}},
  howpublished = {\url{https://github.com/KamiKitsune420/lh-truvoice-decomp}},
  url = {https://github.com/KamiKitsune420/lh-truvoice-decomp},
  urldate = {2026-11-04},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/lh-truvoice-decomp-case/}}
}

Plain text

L&H TruVoice: a portable C rebuild of tv_enua.dll. https://github.com/KamiKitsune420/lh-truvoice-decomp (accessed 2026-11-04). Awesome REA entry: https://awesomerea.org/resources/lh-truvoice-decomp-case/

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About this entry

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Primary sources

README.md GitHub · KamiKitsune420/lh-truvoice-decomp · Revision c2cc3db
tools/e2e_text.py GitHub · KamiKitsune420/lh-truvoice-decomp · Revision c2cc3db
tests/hard.txt GitHub · KamiKitsune420/lh-truvoice-decomp · Revision c2cc3db
LICENSE GitHub · KamiKitsune420/lh-truvoice-decomp · Revision c2cc3db