10-generation evolution of prompt + LoRA-strength + sampling to maximize Pride. Fitness = mean over 8 candidates. Best evolved 0.090 vs prompt-without-LoRA 0.001 (LoRA lift +0.090) vs neutral 0.000; winning λ≈0.75.
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 0.000 · best 0.00 · blend 0.21 · genu 0.05 · WER 0.47
STEER promptLoRA OFF (λ=0)
mean-emo 0.001 · best 0.00 · blend 0.72 · genu 0.15 · WER 0.25
GENERAL: A voice to the extreme expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, building and building.
SCRIPT: (with swelling, self-assured pride) "After everything, it comes to this."
Hall of fame — top 8 evolved recipes (all generated WITH the emotion LoRA active)
#1LoRA ON · λ=1.0 (100%)
mean-emo 0.090 · best 0.30 · blend 0.29 · genu 0.06 · WER 0.38
GENERAL: A voice overwhelmingly expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, impossible to hide.
SCRIPT: (with swelling, self-assured pride) "The report is on the desk, right next to the printer."
mean-emo 0.085 · best 0.22 · blend 0.32 · genu 0.10 · WER 0.01
GENERAL: A voice intensely expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, impossible to hide.
SCRIPT: (with swelling, self-assured pride) "The report is on the desk, right next to the printer."
mean-emo 0.075 · best 0.22 · blend 0.14 · genu 0.05 · WER 0.38
GENERAL: A voice utterly expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, building and building.
SCRIPT: (with swelling, self-assured pride) "The report is on the desk, right next to the printer."
mean-emo 0.073 · best 0.28 · blend 0.34 · genu 0.11 · WER 0.27
GENERAL: A voice to the extreme expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, with every word.
SCRIPT: (with swelling, self-assured pride) "The report is on the desk, right next to the printer."
mean-emo 0.072 · best 0.29 · blend 0.38 · genu 0.11 · WER 0.00
GENERAL: A voice utterly expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, with every word.
SCRIPT: (with swelling, self-assured pride) "The report is on the desk, right next to the printer."
mean-emo 0.070 · best 0.30 · blend 0.28 · genu 0.07 · WER 0.14
GENERAL: A voice unmistakably expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, impossible to hide.
SCRIPT: (with swelling, self-assured pride) "The report is on the desk, right next to the printer."
mean-emo 0.069 · best 0.32 · blend 0.34 · genu 0.10 · WER 0.12
GENERAL: A voice unmistakably expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, impossible to hide.
SCRIPT: (with swelling, self-assured pride) "The report is on the desk, right next to the printer."
mean-emo 0.061 · best 0.20 · blend 0.24 · genu 0.09 · WER 0.12
GENERAL: A voice utterly expressing pride, a proud, self-assured voice, chest swelling with pride, triumphantly boastful, impossible to hide.
SCRIPT: (with swelling, self-assured pride) "The report is on the desk, right next to the printer."
