small fix in api remove_silence (#201)

* fix remove_silence
* change  remove_silence false
* add seed vaule

api.py

@@ -7,6 +7,9 @@ from model import DiT, UNetT
 from model.utils import save_spectrogram
 
 from model.utils_infer import load_vocoder, load_model, infer_process, remove_silence_for_generated_wav
+from model.utils import seed_everything
+import random
+import sys
 
 
 class F5TTS:
@@ -26,6 +29,7 @@ class F5TTS:
         self.n_mel_channels = 100
         self.hop_length = 256
         self.target_rms = 0.1
+        self.seed = -1
 
         # Set device
         self.device = device or (
@@ -56,11 +60,11 @@ class F5TTS:
         self.ema_model = load_model(model_cls, model_cfg, ckpt_file, vocab_file, ode_method, use_ema, self.device)
 
     def export_wav(self, wav, file_wave, remove_silence=False):
+        sf.write(file_wave, wav, self.target_sample_rate)
+
         if remove_silence:
             remove_silence_for_generated_wav(file_wave)
 
-        sf.write(file_wave, wav, self.target_sample_rate)
-
     def export_spectrogram(self, spect, file_spect):
         save_spectrogram(spect, file_spect)
 
@@ -81,7 +85,12 @@ class F5TTS:
         remove_silence=False,
         file_wave=None,
         file_spect=None,
+        seed=-1,
     ):
+        if seed == -1:
+            seed = random.randint(0, sys.maxsize)
+        seed_everything(seed)
+        self.seed = seed
         wav, sr, spect = infer_process(
             ref_file,
             ref_text,
@@ -116,4 +125,7 @@ if __name__ == "__main__":
         gen_text="""I don't really care what you call me. I've been a silent spectator, watching species evolve, empires rise and fall. But always remember, I am mighty and enduring. Respect me and I'll nurture you; ignore me and you shall face the consequences.""",
         file_wave="tests/out.wav",
         file_spect="tests/out.png",
+        seed=-1,  # random seed = -1
     )
+
+    print("seed :", f5tts.seed)