iOS/HIG Reading Notes – Audio

苹果对audio的类别划分非常细致,这是我自己之前没有考虑过的。

【疑问】

%e5%b1%8f%e5%b9%95%e5%bf%ab%e7%85%a7-2016-10-31-08-19-17

这段我不理解,即使是 audio messaging(例如微信发送语音),如何同时录音和播放呢?除非是在通信的两端(发送端和接收端),这边我在录音,那边他在播放,这是拨打语音电话,或者视频电话时可以实现。

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