我记得f1里说了,浏览器必须包含支持webview,里面有提到你这里的音频问题。
Browsers which package games as apps are "Browser Engines" which handle the Web display and sounds, and have Android built-in (called WebView). However, browser engines with Android built-in seem to be lagging behind a little when it comes to supporting HTML5. Because of this reason, we will be giving instructions which use a technology called "Crosswalk Project" that uses the Chrome browser which has a high level of support for HTML5.
A similar explanation to the explanation found on this page can be viewed on the Crosswalk Project website so please check it out.