AWhat changed
Speech could be generated by controlled components modeled on its acoustic structure.
Scientific scope
Exact 1939 sole-author paper; separate Voder demonstration and vocoder patents, later LPC/TTS excluded.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is Dudley’s exact 1939 PNAS paper. The Voder demonstration, vocoder patents and papers, later linear-prediction systems, text-to-speech systems and speech recognition remain separate.
Contributors
- Homer Dudley · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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