supertonic 3

flutter/README.md

@@ -1,13 +1,13 @@
 # Supertonic Flutter Example
 
-This example demonstrates how to use Supertonic 2 in a Flutter application using ONNX Runtime.
+This example demonstrates how to use Supertonic 3 in a Flutter application using ONNX Runtime.
 
 > **Note:** This project uses the `flutter_onnxruntime` package ([https://pub.dev/packages/flutter_onnxruntime](https://pub.dev/packages/flutter_onnxruntime)). At the moment, only the macOS platform has been tested. Although the flutter_onnxruntime package supports several other platforms, they have not been tested in this project yet and may require additional verification.
 
 
 ## 📰 Update News
 
-**2026.01.06** - 🎉 **Supertonic 2** released with multilingual support! Now supports English (`en`), Korean (`ko`), Spanish (`es`), Portuguese (`pt`), and French (`fr`). [Demo](https://huggingface.co/spaces/Supertone/supertonic-2) | [Models](https://huggingface.co/Supertone/supertonic-2)
+**2026.04.29** - 🎉 **Supertonic 3** released with 31-language support, improved reading accuracy, and v2-compatible public ONNX assets. [Demo](https://huggingface.co/spaces/Supertone/supertonic-3) | [Models](https://huggingface.co/Supertone/supertonic-3)
 
 **2025.12.10** - Added [6 new voice styles](https://huggingface.co/Supertone/supertonic/tree/b10dbaf18b316159be75b34d24f740008fddd381) (M3, M4, M5, F3, F4, F5). See [Voices](https://supertone-inc.github.io/supertonic-py/voices/) for details
 
@@ -17,12 +17,7 @@ This example demonstrates how to use Supertonic 2 in a Flutter application using
 
 ## Multilingual Support
 
-Supertonic 2 supports multiple languages. Select the appropriate language from the dropdown:
-- **English (en)**: Default language
-- **한국어 (ko)**: Korean
-- **Español (es)**: Spanish
-- **Português (pt)**: Portuguese
-- **Français (fr)**: French
+Supertonic 3 supports 31 languages. Select the appropriate language from the dropdown; see the main README for the full code list.
 
 ## Requirements
 
@@ -35,4 +30,3 @@ flutter clean
 flutter pub get
 flutter run -d macos
 ```
-

flutter/lib/helper.dart

@@ -12,7 +12,7 @@ final logger = Logger(
 );
 
 // Available languages for multilingual TTS
-const List<String> availableLangs = ['en', 'ko', 'es', 'pt', 'fr'];
+const List<String> availableLangs = ['en', 'ko', 'ja', 'ar', 'bg', 'cs', 'da', 'de', 'el', 'es', 'et', 'fi', 'fr', 'hi', 'hr', 'hu', 'id', 'it', 'lt', 'lv', 'nl', 'pl', 'pt', 'ro', 'ru', 'sk', 'sl', 'sv', 'tr', 'uk', 'vi'];
 
 bool isValidLang(String lang) => availableLangs.contains(lang);
 
@@ -285,7 +285,7 @@ class TextToSpeech {
   Future<Map<String, dynamic>> call(
       String text, String lang, Style style, int totalStep,
       {double speed = 1.05, double silenceDuration = 0.3}) async {
-    final maxLen = lang == 'ko' ? 120 : 300;
+    final maxLen = (lang == 'ko' || lang == 'ja') ? 120 : 300;
     final chunks = _chunkText(text, maxLen: maxLen);
     final langList = List.filled(chunks.length, lang);
     List<double>? wavCat;

flutter/lib/main.dart

@@ -14,7 +14,7 @@ class SupertonicApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Supertonic 2',
+      title: 'Supertonic 3',
       theme: ThemeData(
         colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
         useMaterial3: true,
@@ -42,7 +42,7 @@ class _TTSPageState extends State<TTSPage> {
   bool _isLoading = false;
   bool _isGenerating = false;
   String _status = 'Not initialized';
-  int _totalSteps = 5;
+  int _totalSteps = 8;
   double _speed = 1.05;
   String _selectedLang = 'en';
   bool _isPlaying = false;
@@ -210,7 +210,7 @@ class _TTSPageState extends State<TTSPage> {
     return Scaffold(
       appBar: AppBar(
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        title: const Text('Supertonic 2'),
+        title: const Text('Supertonic 3'),
       ),
       body: Padding(
         padding: const EdgeInsets.all(16.0),
@@ -323,13 +323,10 @@ class _TTSPageState extends State<TTSPage> {
                   child: DropdownButton<String>(
                     value: _selectedLang,
                     isExpanded: true,
-                    items: const [
-                      DropdownMenuItem(value: 'en', child: Text('English')),
-                      DropdownMenuItem(value: 'ko', child: Text('한국어')),
-                      DropdownMenuItem(value: 'es', child: Text('Español')),
-                      DropdownMenuItem(value: 'pt', child: Text('Português')),
-                      DropdownMenuItem(value: 'fr', child: Text('Français')),
-                    ],
+                    items: availableLangs
+                        .map((lang) =>
+                            DropdownMenuItem(value: lang, child: Text(lang)))
+                        .toList(),
                     onChanged: _isLoading || _isGenerating
                         ? null
                         : (value) => setState(() => _selectedLang = value!),