You'll see checkboxes for coarticulation, microprosody, and phrase-final lengthening. Here's what they do — and why the difference is subtle but real.
Coarticulation: Your tongue doesn't teleport between sounds, it glides. These settings make consonants "lean toward" neighboring vowels. The "velar pinch" makes /k/ sound different before "ee" vs "oo" — try "key" vs "coo" and notice how the /k/ changes. That's real, and now the synth does it.
Microprosody: After voiceless sounds like /p/ or /s/, the next vowel's pitch starts slightly higher. After voiced /b/ or /z/, slightly lower. Maybe 10-15 Hz — tiny, but expected by your brain.
Phrase-final lengthening (off by default, useful for some languages): We slow down at sentence endings. This stretches the final vowel so speech feels punctuated, not abruptly stopped.
Rate-dependent reduction: At high speeds, unstressed schwas get shortened, keeping fast speech crisp.
Anticipatory nasalization (off by default): Vowels pick up nasal resonance before /m/ or /n/. Optional since languages vary.
Will you hear a dramatic difference? Honestly, each one is subtle — like color-grading a photo. You might not spot what changed, but it feels less synthetic. I encourage language speakers to mess with them for their language and report which numbers work.
eurpod.com/synths/nvSpeechPlay…
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Tom Grant
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in reply to Tamas G • • •Anticipatory amplitude (nasalizationAnticipatoryAmplitude):
Schwa scale (rateReductionSchwaScale):
Schwa min duration ms (rateReductionSchwaMinDurationMs):
Schwa reduction threshold (rateReductionSchwaReductionThreshold):
Minimum vowel ms (microprosodyMinVowelMs):
Voiced F0 lower Hz (microprosodyVoicedF0LowerHz):
Voiceless F0 raise end Hz (microprosodyVoicelessF0RaiseEndHz):
Voiceless F0 raise Hz (microprosodyVoicelessF0RaiseHz):
Question scale (phraseFinalLengtheningQuestionScale):
Statement scale (phraseFinalLengtheningStatementScale):
Penultimate syllable scale (phraseFinalLengtheningPenultimateSyllableScale):
Final syllable scale (phraseFinalLengtheningFinalSyllableScale):
Velar pinch F3 (coarticulationVelarPinchF3):
Velar pinch F2 scale (coarticulationVelarPinchF2Scale):
Velar pinch threshold (coarticulationVelarPinchThreshold):
Velar F2 locus (coarticulationVelarF2Locus):
Alveolar F2 locus (coarticulationAlveolarF2Locus):
Labial F2 locus (coarticulationLabialF2Locus):
Word-initial fade scale (coarticulationWordInitialFadeScale):
Transition extent (coarticulationTransitionExtent):
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