add sample + codelabs

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>

zh-cn/application-dev/media/audio-recorder.md

@@ -193,3 +193,10 @@ audioRecorder.release();                           	// audioRecorder资源被销
 audioRecorder = undefined;
 ```
 
+## 相关实例
+
+针对音频录制开发，有以下相关实例可供参考：
+
+- [`Recorder`：录音机（eTS）（API8）](https://gitee.com/openharmony/app_samples/tree/master/media/Recorder)
+
+- [音频播放器](https://gitee.com/openharmony/codelabs/tree/master/Media/Audio_OH_ETS)
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