Fix two bugs for blank voice (empty speech): (#1403)

jianganghan

2024-02-29 f272eb4ef78e12a1ef4ae451b114f980a2682d51

 .gitignore

@@ -16,4 +16,13 @@
.egg*
dist
build
funasr.egg-info
funasr.egg-info
docs/_build
modelscope
samples
.ipynb_checkpoints
outputs*
emotion2vec*
GPT-SoVITS*
modelscope_models
examples/aishell/llm_asr_nar/*