add transcribe function

src/f5_tts/api.py

@@ -15,6 +15,7 @@ from f5_tts.infer.utils_infer import (
     preprocess_ref_audio_text,
     remove_silence_for_generated_wav,
     save_spectrogram,
+    transcribe,
     target_sample_rate,
 )
 from f5_tts.model import DiT, UNetT
@@ -82,6 +83,9 @@ class F5TTS:
             model_cls, model_cfg, ckpt_file, mel_spec_type, vocab_file, ode_method, use_ema, self.device
         )
 
+    def transcribe(self, ref_audio, language=None):
+        return transcribe(ref_audio, language)
+
     def export_wav(self, wav, file_wave, remove_silence=False):
         sf.write(file_wave, wav, self.target_sample_rate)