Voice onset time (VOT) is a fundamental acoustic metric used to distinguish between voiced and voiceless stop consonants by measuring the timing of glottal activation relative to release. This relationship is a foundational phonetic concept that does not require individual study citations.
The claim states a foundational, definitional fact of phonetics: voiceless plosives differ from voiced plosives in their voice onset time (VOT), which is the primary acoustic parameter established by Lisker and Abramson to separate these categories. While papers like [0] discuss the history and metrics of VOT, and others examine specific language variations, the core relationship between voicing categories and VOT differences is a basic phonetic given (common knowledge) rather than a contested hypothesis under investigation.