# Dynamic Arc — VoiceNet dimension guide

*Category:* Temporal Dynamics · *code:* `vn_DARC` · *slot:* 69

This dimension measures the trajectory of loudness across the clip. 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.** **Dynamic Arc** controls the trajectory of loudness across the clip. The **__high** LoRA shifts it +0.63 at 125% (worst cost: burst-blend -0.42); the **__low** LoRA shifts it -0.02 at 25% (worst cost: genuineness -0.01). The **__high** direction is the stronger, more reliable knob here.

## ▲ HIGH — Dynamic Arc __high

| dose | target | Δtarget | Δgenu | Δblend | Δqual |
|---|---|---|---|---|---|
| baseline (0%) | 0.022 | — | — | — | — |
| 25% | 0.112 | +0.09 | -0.03 | -0.13 | +0.02 |
| 50% | 0.219 | +0.20 | -0.04 | -0.29 | -0.04 |
| 75% | 0.560 | +0.54 | -0.09 | -0.37 | -0.09 |
| 100% | 0.643 | +0.62 | -0.09 | -0.41 | -0.16 |
| 125% ★ | 0.653 | +0.63 | -0.08 | -0.42 | -0.18 |

- **EmoNet emotion** — ↑ Triumph (+0.66), Impatience and Irritability (+0.61), Contempt (+0.56); ↓ Contemplation (-0.75), Affection (-0.59), Contentment (-0.56)
- **VoiceNet dimension** — ↑ Pitch Range (+0.96), Arousal (+0.94), Metallic Character (+0.93); ↓ Monologue Style (-0.89), Whisper-Talk Style (-0.88), Warmth (-0.86)

Merging **Dynamic Arc __high** raises the dimension: at the recommended **125%** dose the measured Dynamic Arc score moves from a 0.02 baseline to 0.65 (a +0.63 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** (-0.42); across the board genuineness -0.08, burst-blend -0.42, speech quality -0.18. Emotionally it reads as Triumph (r 0.66), Impatience and Irritability (0.61) and Contempt (0.56), and it moves away from Contemplation, Affection and Contentment. On other voice dimensions it co-moves most with Pitch Range (0.96), Arousal (0.94) and Metallic Character (0.93), while pulling down Monologue Style, Whisper-Talk Style and Warmth. Practical call: merge __high at **100–125%**; expect Triumph and Pitch Range to rise and burst-blend to fall. If you don’t want Triumph bleeding in, offset it with a prompt cue toward Contemplation to keep the dynamic arc shift without the side-effect.

## ▼ LOW — Dynamic Arc __low

| dose | target | Δtarget | Δgenu | Δblend | Δqual |
|---|---|---|---|---|---|
| baseline (0%) | 0.022 | — | — | — | — |
| 25% ★ | 0.000 | -0.02 | -0.01 | +0.10 | +0.02 |
| 50% | 0.016 | -0.01 | +0.00 | +0.11 | -0.01 |
| 75% | 0.030 | +0.01 | -0.05 | +0.06 | +0.06 |
| 100% | 0.060 | +0.04 | +0.00 | +0.07 | +0.00 |
| 125% | 0.077 | +0.05 | +0.04 | -0.02 | -0.17 |

- **EmoNet emotion** — ↑ Pain (+0.41), Triumph (+0.36), Anger (+0.36); ↓ Awe (-0.50), Contemplation (-0.49), Interest (-0.42)
- **VoiceNet dimension** — ↑ Playful Style (+0.76), Ranting/Angry Style (+0.59), Arousal (+0.50); ↓ Warmth (-0.72), Whisper-Talk Style (-0.64), Recording Quality (-0.57)

Merging **Dynamic Arc __low** dials back the dimension: at the recommended **25%** dose the measured Dynamic Arc score moves from a 0.02 baseline to 0.00 (a -0.02 shift). The dose-response is noisy and non-monotonic — the merge is an unreliable knob here. That reach is nearly free — the biggest hit is to **genuineness** (-0.01); across the board genuineness -0.01, burst-blend +0.10, speech quality +0.02. Emotionally it reads as Pain (r 0.41), Triumph (0.36) and Anger (0.36), and it moves away from Awe, Contemplation and Interest. On other voice dimensions it co-moves most with Playful Style (0.76), Ranting/Angry Style (0.59) and Arousal (0.50), while pulling down Warmth, Whisper-Talk Style and Recording Quality. Practical call: merge __low at **a light 25–50%**; expect Pain and Playful Style to rise and genuineness to fall. If you don’t want Pain bleeding in, offset it with a prompt cue toward Awe to keep the dynamic arc shift without the side-effect.

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