10-generation evolution of prompt + LoRA-strength + sampling to maximize Fatigue_Exhaustion. Fitness = mean over 8 candidates. Best evolved 0.543 vs prompt-without-LoRA 0.020 (LoRA lift +0.523) vs neutral 0.109; winning λ≈2.0.
Method & reproducibility — how the evolution ran
Base model:laion/moss-tts-local-transformer-4.55b-voice-acting-v2 · LoRA: the matching v3 emotion LoRA (TTS-AGI/moss-emotion-loras-v3, rank 32), applied via PEFT adapter scaling at strength λ. Algorithm: genetic search — population 16, 10 generations, elitism (top 6 carried over). Each generation: every genome is generated best-of-8 and its fitness = the mean target-emotion strength over those 8 candidates (EmoNet score for the emotion, minus 0.25·max(0, WER−0.6) as a light intelligibility guard). Offspring = 60% crossover of two elites + mutation, 40% mutation of one elite. Genome (what evolves): the GENERAL voice description, the SCRIPT delivery cue, the carrier sentence, the LoRA strength λ (seeded 0.75–1.5, mutated within 0.4–2.0), and the sampling params (audio temperature, top_p, top_k). Mutation operators: 35% regenerate the description (new intensity + manner adjectives), 20% swap the carrier sentence, 23% jitter λ by ±0.25/0.5, 12% jitter temperature ±0.1, 10% change top_k. LoRA on vs off: the two LoRA OFF cards are baselines generated with the adapter disabled (λ=0) — a plain neutral prompt, and the best steering prompt without the LoRA. Every LoRA ON hall-of-fame recipe below was generated with the LoRA active at the evolved λ shown on the card. Seed is derived from the emotion name (deterministic).
Baselines — LoRA disabled
NEUTRAL promptLoRA OFF (λ=0)
mean-emo 0.109 · best 0.31 · blend 0.21 · genu 0.05 · WER 0.47
STEER promptLoRA OFF (λ=0)
mean-emo 0.020 · best 0.06 · blend 0.98 · genu 0.34 · WER 0.50
GENERAL: A voice viscerally expressing fatigue exhaustion, a weary, exhausted voice, heavy and dragging, barely able to stay awake, in every breath.
SCRIPT: (utterly exhausted, weary and dragging) "I can't believe this is happening."
Hall of fame — top 7 evolved recipes (all generated WITH the emotion LoRA active)
#1LoRA ON · λ=2.0 (200%)
mean-emo 0.543 · best 0.66 · blend 0.49 · genu 0.26 · WER 0.77
GENERAL: A voice intensely expressing fatigue exhaustion, a weary, exhausted voice, heavy and dragging, barely able to stay awake, raw and unfiltered.
SCRIPT: (utterly exhausted, weary and dragging) "After everything, it comes to this."
mean-emo 0.498 · best 0.66 · blend 0.48 · genu 0.27 · WER 0.58
GENERAL: A voice overwhelmingly expressing fatigue exhaustion, a weary, exhausted voice, heavy and dragging, barely able to stay awake, impossible to hide.
SCRIPT: (utterly exhausted, weary and dragging) "After everything, it comes to this."
mean-emo 0.504 · best 0.73 · blend 0.51 · genu 0.30 · WER 0.67
GENERAL: A voice intensely expressing fatigue exhaustion, a weary, exhausted voice, heavy and dragging, barely able to stay awake, impossible to hide.
SCRIPT: (utterly exhausted, weary and dragging) "After everything, it comes to this."
mean-emo 0.537 · best 0.68 · blend 0.47 · genu 0.27 · WER 0.92
GENERAL: A voice viscerally expressing fatigue exhaustion, a weary, exhausted voice, heavy and dragging, barely able to stay awake, impossible to hide.
SCRIPT: (utterly exhausted, weary and dragging) "After everything, it comes to this."
mean-emo 0.556 · best 0.65 · blend 0.44 · genu 0.28 · WER 1.00
GENERAL: A voice overwhelmingly expressing fatigue exhaustion, a weary, exhausted voice, heavy and dragging, barely able to stay awake, impossible to hide.
SCRIPT: (utterly exhausted, weary and dragging) "After everything, it comes to this."
mean-emo 0.456 · best 0.58 · blend 0.45 · genu 0.30 · WER 0.65
GENERAL: A voice unmistakably expressing fatigue exhaustion, a weary, exhausted voice, heavy and dragging, barely able to stay awake, in every breath.
SCRIPT: (utterly exhausted, weary and dragging) "After everything, it comes to this."
mean-emo 0.479 · best 0.59 · blend 0.47 · genu 0.27 · WER 0.75
GENERAL: A voice intensely expressing fatigue exhaustion, a weary, exhausted voice, heavy and dragging, barely able to stay awake, pouring out.
SCRIPT: (utterly exhausted, weary and dragging) "After everything, it comes to this."
