diff --git a/paddlespeech/cli/asr/infer.py b/paddlespeech/cli/asr/infer.py
index 640cf729ff63c787c6ad95c57a2ca15be1cdcecd..66a2f169f033178a9fd41073ab8dcc0924ce9393 100644
--- a/paddlespeech/cli/asr/infer.py
+++ b/paddlespeech/cli/asr/infer.py
@@ -235,7 +235,7 @@ class ASRExecutor(BaseExecutor):
                 audio = librosa.resample(audio, audio_sample_rate,
                                          self.sample_rate)
                 audio_sample_rate = self.sample_rate
-                # pcm16 -> pcm 32
+                # pcm32 -> pcm 16
                 audio = audio * (2**(bits - 1))
                 audio = np.round(audio).astype("int16")
             else: