18.录音输出接口如何定义的？

18.录音输出接口如何定义的？

["\u7b54\uff1a1.\u63a7\u5236\u7535\u5e732.\u7a7a3.GND 4.\u97f3\u9891\u8f93\u51fa\u7535\u5e73 5.\u7a7a"]