Acoustic Greeting Trajectories:
F1 vs F2 Vowel Resonance Space (Drag cursor to steer)
F1: 720 Hz | F2: 1240 Hz
Based on Peterson & Barney vowel acoustics. Drag directly in the field to steer resonant vocal tract formants.
Acoustic Spectrogram & Energy Envelope
0 - 4000 Hz
Dynamic frequency spectrum over the duration of the utterance. Formant ridges highlight vocal resonance bands.
Utterance Timeline & Phoneme Scrubbing
Position: 0.28 s / 0.50 s
[h] Aspiration
[a] Open Vowel
[ɪ] Palatal Glide
0.00s (Glottal Friction)
Click & scrub along timeline to inspect acoustic frame
Duration: 0.50s
Synthesized Time-Domain Pressure Waveform
44.1 kHz PCM | Glottal Pulse Train
Acoustic Signal Formant State Verified
The phonological greeting sequence /haɪ/ ("Hi") is modeled via Fant's acoustic theory of speech production: unvoiced glottal turbulence passing through a 3-pole dynamic vocal tract filter.
| Phoneme Phase | Fundamental F0 | Formant 1 (Jaw/Height) | Formant 2 (Tongue Back/Front) | Formant 3 (Lip/Pharynx) |
|---|---|---|---|---|
| [h] Frication / Onset | Noise / Unvoiced | 700 Hz | 1200 Hz | 2500 Hz |
| [a] Open Vowel Nucleus | 130 Hz | 750 Hz | 1220 Hz | 2550 Hz |
| [ɪ] Offglide Target | 110 Hz | 380 Hz | 2100 Hz | 2800 Hz |