feat: implement --force_lang advanced usage

README.md

@@ -229,6 +229,12 @@ python tts.py --device cuda # will use the NVIDIA GPU
 python tts.py --device xpu # will use the Intel GPU
 ```
 
+If you want to use a voice for a different language text (e.g., Japanese voice for English text) you can use `--force_lang`
+
+```bash
+python tts.py -v jf_alpha "Hello there!" --force_lang a
+```
+
 ## Demo Outputs
 
 ### Voice: pro (ah_heart)

tts.py

@@ -58,6 +58,13 @@ def parse_args():
         default="pro",
         help="Voice to use (pro, hot, asmr, brit)",
     )
+    parser.add_argument(
+        "--force_lang",
+        required=False,
+        type=str,
+        default="a",
+        help="Force language code",
+    )
     parser.add_argument(
         "--input_file",
         "-i",
@@ -167,7 +174,8 @@ def main():
         name = name.replace("\\", "_")
         name = name.replace("/", "_")
 
-        lang_code = voice[0]
+        lang_code = args.force_lang if args.force_lang else voice[0]
+
         pipeline = KPipeline(lang_code=lang_code, device=args.device, repo_id='hexgrad/Kokoro-82M')
 
         '''