# Head Resonance — VoiceNet dimension guide

*Category:* Resonance Placement · *code:* `vn_R_HEAD` · *slot:* 80

This dimension measures resonance originating from the head cavity. Merge the `__high` / `__low` LoRA from `laion/moss-voicenet-dimension-loras` at 25/50/75/100/125%. Costs are shifts vs. the 24-sample neutral baseline.

**TL;DR.** **Head Resonance** controls resonance originating from the head cavity. The **__high** LoRA shifts it +0.42 at 125% (worst cost: burst-blend -0.41); the **__low** LoRA shifts it -0.02 at 25% (worst cost: burst-blend -0.06). The **__high** direction is the stronger, more reliable knob here.

## ▲ HIGH — Head Resonance __high

| dose | target | Δtarget | Δgenu | Δblend | Δqual |
|---|---|---|---|---|---|
| baseline (0%) | 0.048 | — | — | — | — |
| 25% | 0.040 | -0.01 | -0.03 | -0.13 | -0.02 |
| 50% | 0.206 | +0.16 | -0.06 | -0.19 | +0.05 |
| 75% | 0.304 | +0.26 | -0.05 | -0.26 | +0.01 |
| 100% | 0.436 | +0.39 | -0.12 | -0.39 | +0.08 |
| 125% ★ | 0.470 | +0.42 | -0.13 | -0.41 | +0.03 |

- **EmoNet emotion** — ↑ Concentration (+0.26), Embarrassment (+0.26), Elation (+0.26); ↓ Longing (-0.61), Fear (-0.53), Awe (-0.51)
- **VoiceNet dimension** — ↑ Brightness (+0.88), Mask Resonance (+0.88), Nasal Resonance (+0.85); ↓ Vocal-burst blend (-0.71), Genuineness (-0.67), Cognitive Load (-0.63)

Merging **Head Resonance __high** pushes the dimension: at the recommended **125%** dose the measured Head Resonance score moves from a 0.05 baseline to 0.47 (a +0.42 shift). The dose-response is clean and monotonic — each step pushes the dimension further. That reach is a steep cost — the biggest hit is to **burst-blend** (-0.41); across the board genuineness -0.13, burst-blend -0.41, speech quality +0.03. Emotionally it reads as Concentration (r 0.26), Embarrassment (0.26) and Elation (0.26), and it moves away from Longing, Fear and Awe. On other voice dimensions it co-moves most with Brightness (0.88), Mask Resonance (0.88) and Nasal Resonance (0.85), while pulling down Vocal-burst blend, Genuineness and Cognitive Load. Practical call: merge __high at **100–125%**; expect Concentration and Brightness to rise and burst-blend to fall. If you don’t want Concentration bleeding in, offset it with a prompt cue toward Longing to keep the head resonance shift without the side-effect.

## ▼ LOW — Head Resonance __low

| dose | target | Δtarget | Δgenu | Δblend | Δqual |
|---|---|---|---|---|---|
| baseline (0%) | 0.048 | — | — | — | — |
| 25% ★ | 0.031 | -0.02 | -0.03 | -0.06 | -0.02 |
| 50% | 0.163 | +0.12 | -0.02 | -0.11 | +0.01 |
| 75% | 0.141 | +0.09 | +0.01 | -0.10 | -0.14 |
| 100% | 0.119 | +0.07 | -0.06 | -0.11 | +0.02 |
| 125% | 0.131 | +0.08 | -0.06 | -0.04 | +0.04 |

- **EmoNet emotion** — ↑ Disgust (+0.30), Sourness (+0.29), Impatience and Irritability (+0.28); ↓ Fear (-0.36), Relief (-0.35), Fatigue/Exhaustion (-0.30)
- **VoiceNet dimension** — ↑ Nasal Resonance (+0.78), Brightness (+0.76), Mask Resonance (+0.74); ↓ Cognitive Load (-0.61), Disfluency (-0.49), Genuineness (-0.44)

Merging **Head Resonance __low** dials back the dimension: at the recommended **25%** dose the measured Head Resonance score moves from a 0.05 baseline to 0.03 (a -0.02 shift). The dose-response is mostly ordered but noisy between doses. That reach is nearly free — the biggest hit is to **burst-blend** (-0.06); across the board genuineness -0.03, burst-blend -0.06, speech quality -0.02. Emotionally it reads as Disgust (r 0.30), Sourness (0.29) and Impatience and Irritability (0.28), and it moves away from Fear, Relief and Fatigue/Exhaustion. On other voice dimensions it co-moves most with Nasal Resonance (0.78), Brightness (0.76) and Mask Resonance (0.74), while pulling down Cognitive Load, Disfluency and Genuineness. Practical call: merge __low at **a light 25–50%**; expect Disgust and Nasal Resonance to rise and burst-blend to fall. If you don’t want Disgust bleeding in, offset it with a prompt cue toward Fear to keep the head resonance shift without the side-effect.

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