optimize ComputeDecibel in fsmn-vad model by using numpy (#2174)

StevenH

2024-10-26 1254e8aee1e3200acc2b4752c6822bfc1a21b22f

 examples/industrial_data_pretraining/llm_asr/demo_speech2text.sh

@@ -62,4 +62,3 @@

}&
done
wait