KittenTtsEngine class final

End-to-end KittenTTS engine: text → audio float array.

Wires together G2P, front runner, source/STFT, decoder, and iSTFT into a single synthesise call. All components use Dart-native MLX operations (no Python-exported functions).

Usage:

final engine = KittenTtsEngine.load(
  snapshotPath: '/path/to/model',
  espeakLibPath: '/path/to/libespeak-ng.dylib',
  espeakDataPath: '/path/to/espeak-ng-data',
);
final result = engine.synthesise('Hello world');
// result.audio: MlxArray [1, numSamples]
// result.sampleRate: 24000
result.close();
engine.dispose();