2，The AudioContext was not allowed to start.

The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://goo.gl/7K7WLu

出现这个问题，网上搜索结果为：Chrome浏览器升级之后，AudioContext必须在用户手势操作之后才能进行created、resumed。

原文：https://www.cnblogs.com/Oldz/p/12340980.html