[
  {
    "preset_id": "male_to_female",
    "label": "Maennlich → Weiblich",
    "pitch": {"semitones": 4.0},
    "breathiness": {"amount": 0.04}
  },
  {
    "preset_id": "male_to_girl",
    "label": "Maennlich → Maedchen",
    "pitch": {"semitones": 7.0},
    "breathiness": {"amount": 0.03},
    "dynamics": {"pause_scale": 0.85},
    "speed": {"factor": 0.8}    
  },
  {
    "preset_id": "male_to_boy",
    "label": "Maennlich → Junge",
    "pitch": {"semitones": 5.0},
    "dynamics": {"pause_scale": 0.8}
  }
]