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刚开始学习dm365，遇到些问题，忘专家们能指导下。
1，应用程序如何采集音频信号（希望能大致说明下）。
2，如果基于alsa架构编写音频应用程序，使用arm-none-linux-gnueabi编译吗？我用它编译，错误提示说找不到头文件。需要移植alsa？
