我在arm开发板上用python3运行例程，能够生成语音文件，但是文件播放出来的声音叽里咕噜听不清，汉字一晃而过，英文字符abcdefglmn也同样听不清。语速等配置都默认。我tftp上传到pc，用vlc播放也是一样的结果。而同样的py代码在pc上运行却是正常的语音，求教是何原因？

arm板上运行有个警告如下

/usr/lib/python3/dist-packages/urllib3/connectionpool.py:794: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.org/en/latest/security.html
  InsecureRequestWarning)

我查网上说不影响，不知对否？