Initial release of Text to Speech Plus. A modern, high-performance Text-to-Speech engine for Flutter with advanced features for mobile, desktop, and web.

🚀 Key Features #

• SSML Support: Native Speech Synthesis Markup Language support across Windows, Android, iOS 17+, and macOS 14+.
• Streaming TTS: Enqueue capability for seamless, immediate playback of text chunks (ideal for AI/LLM streaming).
• Word Timestamp API: Unified cross-platform progress callbacks with precise word and sentence boundary detection.
• Audio Visualization: onAmplitude callback for real-time volume levels, perfect for lip-sync and waveforms.
• Automatic Language Detection: Smart script analysis to automatically select the best local voice for the input text.
• Enhanced Voice Metadata: Detailed voice information including Neural, Premium, Gender, and Age markers.
• Multi-Speaker Support: Ability to change voices per-utterance within a single speech session.
• Smart Reading Modes: Built-in prosody curves for Storytelling, News, and Whisper.

🛠 Platform Support #

• Android: Modern Kotlin implementation with optimized AudioFocus handling.
• iOS/macOS: Native Swift implementation with full AVFoundation integration.
• Web: Modern dart:js_interop framework with robust fallback handling.
• Windows: Full WinRT and SAPI support for high-quality natural voices.