diff --git a/tools/rvc_for_realtime.py b/tools/rvc_for_realtime.py
index e71c3f2..8f7fcb7 100644
--- a/tools/rvc_for_realtime.py
+++ b/tools/rvc_for_realtime.py
@@ -219,24 +219,20 @@ class RVC:
             return self.get_f0_rmvpe(x, f0_up_key)
         if method == "pm":
             p_len = x.shape[0] // 160 + 1
-            f0 = (
-                parselmouth.Sound(x, 16000)
-                .to_pitch_ac(
+            f0_min = 65
+            l_pad = int(np.ceil(1.5 / f0_min * 16000))
+            r_pad = l_pad + 1
+            s = parselmouth.Sound(np.pad(x, (l_pad, r_pad)), 16000).to_pitch_ac(
                     time_step=0.01,
                     voicing_threshold=0.6,
-                    pitch_floor=50,
+                    pitch_floor=f0_min,
                     pitch_ceiling=1100,
-                )
-                .selected_array["frequency"]
-            )
-
-            pad_size = (p_len - len(f0) + 1) // 2
-            if pad_size > 0 or p_len - len(f0) - pad_size > 0:
-                # printt(pad_size, p_len - len(f0) - pad_size)
-                f0 = np.pad(
-                    f0, [[pad_size, p_len - len(f0) - pad_size]], mode="constant"
-                )
-
+                    )
+            assert np.abs(s.t1 - 1.5 / f0_min) < 0.001
+            f0 = s.selected_array['frequency']
+            if len(f0) < p_len:
+                f0 = np.pad(f0, (0, p_len - len(f0)))
+            f0 = f0[: p_len]
             f0 *= pow(2, f0_up_key / 12)
             return self.get_f0_post(f0)
         if n_cpu == 1:
@@ -354,7 +350,7 @@ class RVC:
             feats = (
                 self.model.final_proj(logits[0]) if self.version == "v1" else logits[0]
             )
-            feats = F.pad(feats, (0, 0, 1, 0))
+            feats = torch.cat((feats, feats[:,-1:,:]), 1)
         t2 = ttime()
         try:
             if hasattr(self, "index") and self.index_rate != 0: