VoiceNet LoRA evolution

What the VoiceNet LoRAs do — evolutionary study (50% vs 100% + optimal prompting)

For each new VoiceNet-dimension LoRA (retrained with ≤25% game-character data), a 10-generation evolutionary search finds the prompt+sampling that best pushes its dimension, then measures the effect at 0% / 50% / 100% strength. Shows what each LoRA brings, how 50% compares to 100%, and the best way to prompt it. Fitness = mean over 6 candidates of the dimension in its intended direction. Every per-LoRA page has a Method & reproducibility box; dose players are marked λ=0 OFF / λ=50% / λ=100%.

Method & reproducibility — how the evolution ran

Base model: laion/moss-tts-local-transformer-4.55b-voice-acting-v2 · LoRA: the new VoiceNet-dimension LoRA vn_<CODE>__<high|low> (retrained with ≤25% game-character data, rank 32), applied via PEFT adapter scaling at strength λ.
Algorithm: genetic search — population 12, 10 generations, elitism (top 5). During evolution every genome is generated best-of-6 with the LoRA at λ=100%; its fitness = the mean over those 6 candidates of the target VoiceNet dimension score in the intended direction (for a __high LoRA the raw score; for __low, 1−score), minus 0.2·max(0, WER−0.6).
Genome (what evolves): the GENERAL voice description, the SCRIPT cue, the carrier sentence, and the sampling params (temperature, top_p, top_k). λ is fixed at 100% during the search.
Mutation operators: 40% regenerate description, 25% swap carrier, 17% jitter temperature ±0.1, 18% change top_k. Offspring = 60% crossover + mutation, 40% mutation.
Dose measurement (below): the winning recipe is then re-generated at λ=0 (LoRA OFF), λ=50% and λ=100% (each best-of-6) to show exactly what 50% vs 100% of the LoRA brings over the no-LoRA baseline.

Averaged over all LoRAs, 50% already delivers 36% of the full-strength shift.

Conclusions

On average the LoRA at 100% shifts its dimension by +0.350 (in-direction) over neutral; at 50% by +0.157.

Most controllable dimensions: Ranting/Angry Style (high), Tension (high), Dynamic Arc (high), Respiration (high), Monologue Style (low), Cartoonish Style (high), Cognitive Load (high), Attack (high).

Least responsive (LoRA barely moves them): Volatility (low), Disfluency (low), Respiration (low), Mixed Resonance (high), Roughness (low), Mixed Resonance (low).

50% is often enough: it reaches on average 34% of the 100% effect, at lower over-drive risk.

dimension	dir	neutral	50%	100%	Δ100
Ranting/Angry Style	high	0.00	0.56	0.78	+0.78
Tension	high	0.22	0.61	0.88	+0.67
Dynamic Arc	high	0.16	0.34	0.81	+0.65
Respiration	high	0.08	0.28	0.73	+0.65
Monologue Style	low	0.36	0.62	0.99	+0.63
Cartoonish Style	high	0.21	0.24	0.83	+0.61
Cognitive Load	high	0.12	0.45	0.73	+0.61
Attack	high	0.26	0.46	0.87	+0.61
Pitch Range	high	0.25	0.51	0.85	+0.60
Dramatic Style	high	0.39	0.72	0.96	+0.58
Warmth	low	0.39	0.66	0.95	+0.56
Whisper-Talk Style	high	0.40	0.59	0.96	+0.56
Roughness	high	0.22	0.39	0.77	+0.55
Casual Style	high	0.30	0.62	0.84	+0.54
Register	high	0.34	0.69	0.87	+0.53
Articulation Clarity	low	0.41	0.76	0.94	+0.53
Emphasis	high	0.42	0.65	0.94	+0.52
Focus	high	0.32	0.54	0.83	+0.51
Volatility	high	0.29	0.58	0.80	+0.50
Formal Style	low	0.41	0.78	0.91	+0.50
Esthetics	low	0.50	0.58	1.00	+0.50
Recording Quality	low	0.30	0.33	0.79	+0.49
Perceived Gender	low	0.47	0.91	0.96	+0.49
Arousal	high	0.43	0.77	0.92	+0.48
Arousal Shift	low	0.52	0.82	1.00	+0.48
Velocity Flux	high	0.46	0.60	0.94	+0.47
Tempo	high	0.26	0.40	0.73	+0.47
Vulnerability	high	0.28	0.52	0.75	+0.47
Playful Style	high	0.27	0.45	0.74	+0.46
Throat Resonance	high	0.33	0.56	0.79	+0.46
Chest Resonance	high	0.40	0.74	0.85	+0.45
ASMR Style	high	0.16	0.39	0.60	+0.44
Disfluency	high	0.09	0.33	0.53	+0.44
Stance	high	0.50	0.77	0.94	+0.44
Fullness	high	0.53	0.65	0.97	+0.43
Perceived Gender	high	0.53	0.75	0.95	+0.43
Arousal Shift	high	0.48	0.46	0.90	+0.42
Conversational Style	high	0.23	0.54	0.65	+0.42
Valence	high	0.26	0.45	0.68	+0.42
Metallic Character	high	0.20	0.44	0.61	+0.41
Whisper-Talk Style	low	0.60	0.71	1.00	+0.40
Nasal Resonance	high	0.29	0.41	0.69	+0.39
Narrator Style	high	0.53	0.62	0.92	+0.39
Stance	low	0.50	0.74	0.89	+0.39
Chest Resonance	low	0.60	0.85	0.98	+0.38
Storytelling Style	high	0.57	0.83	0.94	+0.37
Authoritative Style	high	0.28	0.54	0.65	+0.37
Voice Age	high	0.36	0.53	0.72	+0.36
Dramatic Style	low	0.61	0.81	0.97	+0.36
Narrator Style	low	0.47	0.47	0.82	+0.35
Harmonicity	high	0.46	0.58	0.81	+0.35
Arousal	low	0.57	0.63	0.92	+0.35
Register	low	0.66	0.99	1.00	+0.34
Harmonicity	low	0.54	0.69	0.88	+0.34
Content Appropriateness (3-point Scale)	high	0.10	0.22	0.44	+0.34
Throat Resonance	low	0.67	0.91	1.00	+0.33
Head Resonance	high	0.24	0.29	0.56	+0.32
Oral Resonance	low	0.50	0.59	0.81	+0.32
Valence Shift	low	0.64	0.73	0.94	+0.30
Background Noise	low	0.43	0.54	0.74	+0.30
Teacher/Didactic Style	high	0.28	0.34	0.57	+0.29
Fullness	low	0.47	0.55	0.76	+0.29
Velocity Flux	low	0.54	0.72	0.82	+0.29
Brightness	low	0.56	0.80	0.84	+0.28
Vulnerability	low	0.72	0.66	1.00	+0.28
Warmth	high	0.61	0.64	0.89	+0.27
Valence Shift	high	0.36	0.48	0.63	+0.27
Casual Style	low	0.70	0.72	0.92	+0.22
Playful Style	low	0.73	0.81	0.94	+0.21
Pitch Range	low	0.75	0.86	0.96	+0.21
Esthetics	high	0.50	0.60	0.71	+0.21
Monologue Style	high	0.64	0.77	0.85	+0.21
Head Resonance	low	0.76	0.87	0.97	+0.21
Mask Resonance	high	0.51	0.59	0.72	+0.21
Chunking	high	0.40	0.45	0.60	+0.21
Structure	high	0.54	0.63	0.74	+0.20
Metallic Character	low	0.80	0.98	1.00	+0.20
Cartoonish Style	low	0.79	0.94	0.99	+0.20
Teacher/Didactic Style	low	0.72	0.93	0.92	+0.20
Brightness	high	0.44	0.54	0.64	+0.19
Nasal Resonance	low	0.71	0.78	0.90	+0.19
Formal Style	high	0.59	0.59	0.77	+0.19
Valence	low	0.74	0.80	0.91	+0.17
Newsreader Style	high	0.26	0.28	0.42	+0.16
Tension	low	0.78	0.81	0.94	+0.16
Smoothness	high	0.48	0.53	0.63	+0.16
ASMR Style	low	0.84	0.99	1.00	+0.16
Recording Quality	high	0.70	0.74	0.83	+0.13
Oral Resonance	high	0.50	0.40	0.63	+0.13
Articulation Clarity	high	0.59	0.56	0.72	+0.13
Dynamic Arc	low	0.84	0.94	0.97	+0.13
Background Noise	high	0.57	0.60	0.69	+0.12
Cognitive Load	low	0.88	0.93	1.00	+0.12
Content Appropriateness (3-point Scale)	low	0.90	0.95	1.00	+0.10
Volatility	low	0.71	0.74	0.81	+0.10
Disfluency	low	0.91	0.98	1.00	+0.09
Respiration	low	0.92	0.99	1.00	+0.08
Mixed Resonance	high	0.47	0.49	0.53	+0.06
Roughness	low	0.78	0.84	0.83	+0.06
Mixed Resonance	low	0.53	0.55	0.57	+0.04

dimension

dir

neutral

50%

100%

Δ100

Ranting/Angry Style

high

0.00

0.56

0.78

+0.78

Tension

high

0.22

0.61

0.88

+0.67

Dynamic Arc

high

0.16

0.34

0.81

+0.65

Respiration

high

0.08

0.28

0.73

+0.65

Monologue Style

low

0.36

0.62

0.99

+0.63

Cartoonish Style

high

0.21

0.24

0.83

+0.61

Cognitive Load

high

0.12

0.45

0.73

+0.61

Attack

high

0.26

0.46

0.87

+0.61

Pitch Range

high

0.25

0.51

0.85

+0.60

Dramatic Style

high

0.39

0.72

0.96

+0.58

Warmth

low

0.39

0.66

0.95

+0.56

Whisper-Talk Style

high

0.40

0.59

0.96

+0.56

Roughness

high

0.22

0.39

0.77

+0.55

Casual Style

high

0.30

0.62

0.84

+0.54

high

0.34

0.69

0.87

+0.53

Articulation Clarity

low

0.41

0.76

0.94

+0.53

Emphasis

high

0.42

0.65

0.94

+0.52

Focus

high

0.32

0.54

0.83

+0.51

Volatility

high

0.29

0.58

0.80

+0.50

Formal Style

low

0.41

0.78

0.91

+0.50

Esthetics

low

0.50

0.58

1.00

+0.50

Recording Quality

low

0.30

0.33

0.79

+0.49

Perceived Gender

low

0.47

0.91

0.96

+0.49

Arousal

high

0.43

0.77

0.92

+0.48

Arousal Shift

low

0.52

0.82

1.00

+0.48

Velocity Flux

high

0.46

0.60

0.94

+0.47

Tempo

high

0.26

0.40

0.73

+0.47

Vulnerability

high

0.28

0.52

0.75

+0.47

Playful Style

high

0.27

0.45

0.74

+0.46

Throat Resonance

high

0.33

0.56

0.79

+0.46

Chest Resonance

high

0.40

0.74

0.85

+0.45

ASMR Style

high

0.16

0.39

0.60

+0.44

Disfluency

high

0.09

0.33

0.53

+0.44

Stance

high

0.50

0.77

0.94

+0.44

Fullness

high

0.53

0.65

0.97

+0.43

Perceived Gender

high

0.53

0.75

0.95

+0.43

Arousal Shift

high

0.48

0.46

0.90

+0.42

Conversational Style

high

0.23

0.54

0.65

+0.42

Valence

high

0.26

0.45

0.68

+0.42

Metallic Character

high

0.20

0.44

0.61

+0.41

Whisper-Talk Style

low

0.60

0.71

1.00

+0.40

Nasal Resonance

high

0.29

0.41

0.69

+0.39

Narrator Style

high

0.53

0.62

0.92

+0.39

Stance

low

0.50

0.74

0.89

+0.39

Chest Resonance

low

0.60

0.85

0.98

+0.38

Storytelling Style

high

0.57

0.83

0.94

+0.37

Authoritative Style

high

0.28

0.54

0.65

+0.37

Voice Age

high

0.36

0.53

0.72

+0.36

Dramatic Style

low

0.61

0.81

0.97

+0.36

Narrator Style

low

0.47

0.82

+0.35

Harmonicity

high

0.46

0.58

0.81

+0.35

Arousal

low

0.57

0.63

0.92

+0.35

low

0.66

0.99

1.00

+0.34

Harmonicity

low

0.54

0.69

0.88

+0.34

Content Appropriateness (3-point Scale)

high

0.10

0.22

0.44

+0.34

Throat Resonance

low

0.67

0.91

1.00

+0.33

Head Resonance

high

0.24

0.29

0.56

+0.32

Oral Resonance

low

0.50

0.59

0.81

+0.32

Valence Shift

low

0.64

0.73

0.94

+0.30

Background Noise

low

0.43

0.54

0.74

+0.30

Teacher/Didactic Style

high

0.28

0.34

0.57

+0.29

Fullness

low

0.47

0.55

0.76

+0.29

Velocity Flux

low

0.54

0.72

0.82

+0.29

Brightness

low

0.56

0.80

0.84

+0.28

Vulnerability

low

0.72

0.66

1.00

+0.28

Warmth

high

0.61

0.64

0.89

+0.27

Valence Shift

high

0.36

0.48

0.63

+0.27

Casual Style

low

0.70

0.72

0.92

+0.22

Playful Style

low

0.73

0.81

0.94

+0.21

Pitch Range

low

0.75

0.86

0.96

+0.21

Esthetics

high

0.50

0.60

0.71

+0.21

Monologue Style

high

0.64

0.77

0.85

+0.21

Head Resonance

low

0.76

0.87

0.97

+0.21

Mask Resonance

high

0.51

0.59

0.72

+0.21

Chunking

high

0.40

0.45

0.60

+0.21

Structure

high

0.54

0.63

0.74

+0.20

Metallic Character

low

0.80

0.98

1.00

+0.20

Cartoonish Style

low

0.79

0.94

0.99

+0.20

Teacher/Didactic Style

low

0.72

0.93

0.92

+0.20

Brightness

high

0.44

0.54

0.64

+0.19

Nasal Resonance

low

0.71

0.78

0.90

+0.19

Formal Style

high

0.59

0.77

+0.19

Valence

low

0.74

0.80

0.91

+0.17

Newsreader Style

high

0.26

0.28

0.42

+0.16

Tension

low

0.78

0.81

0.94

+0.16

Smoothness

high

0.48

0.53

0.63

+0.16

ASMR Style

low

0.84

0.99

1.00

+0.16

Recording Quality

high

0.70

0.74

0.83

+0.13

Oral Resonance

high

0.50

0.40

0.63

+0.13

Articulation Clarity

high

0.59

0.56

0.72

+0.13

Dynamic Arc

low

0.84

0.94

0.97

+0.13

Background Noise

high

0.57

0.60

0.69

+0.12

Cognitive Load

low

0.88

0.93

1.00

+0.12

Content Appropriateness (3-point Scale)

low

0.90

0.95

1.00

+0.10

Volatility

low

0.71

0.74

0.81

+0.10

Disfluency

low

0.91

0.98

1.00

+0.09

Respiration

low

0.92

0.99

1.00

+0.08

Mixed Resonance

high

0.47

0.49

0.53

+0.06

Roughness

low

0.78

0.84

0.83

+0.06

Mixed Resonance

low

0.53

0.55

0.57

+0.04