{"total_languages_advertised":1,"installed_languages":["bn"],"validated_languages":["bn"],"presets":{"neutral":{"speed":1.0,"pitch":0,"volume_db":0,"pause_ms":0},"warm":{"speed":0.92,"pitch":-2,"volume_db":2,"pause_ms":120},"professional":{"speed":1.0,"pitch":0,"volume_db":1,"pause_ms":60},"calm":{"speed":0.78,"pitch":-4,"volume_db":-2,"pause_ms":220},"urgent":{"speed":1.28,"pitch":3,"volume_db":3,"pause_ms":10},"apologetic":{"speed":0.82,"pitch":-3,"volume_db":-2,"pause_ms":200},"excited":{"speed":1.22,"pitch":5,"volume_db":4,"pause_ms":20},"soft":{"speed":0.8,"pitch":-5,"volume_db":-4,"pause_ms":180}},"voices":[{"voice_id":"bn-female-vits","language":"bn","language_name":"Bengali","gender":"female","backend":"coqui-bn-vits","model":"tts_models/bn/custom/vits-female","quality":"validated","style_capability":"audio_preset","notes":"Download-validated local Bengali female VITS voice at 22050 Hz mono."},{"voice_id":"bn-female-iitm-vits","language":"bn","language_name":"Bengali","gender":"female","backend":"coqui-vits-checkpoint","model":"models/iitm-bangla-female","quality":"validated","style_capability":"audio_preset","notes":"Download-validated IIT Madras Bangla VITS female checkpoint, 22050 Hz mono. Source: bangla-speech-processing/bangla_tts_female, MIT license."}],"truth_note":"Truthful catalog: only download-validated voices are advertised. Presets are approximate audio processing, not native emotion."}