其中音频格式，可以记录和iPhone和Android播放？ [英] Which audio format can be recorded and played back by iPhone and Android?
问题描述
我设计一个应用程序，可以记录回放在这两个平台上的iPhone和Android的短音频文件，以及希望任何其他智能手机。
I am designing an app that can record short audio files on iPhone and Android that can be played back on both platforms, as well as hopefully any other smartphone.
现在，我使用* .caf的iLBC的codeC，因为我知道iPhone没有连接code MP3。
Right now I'm using *.caf with the iLBC codec, as I know the iPhone does not encode mp3.
有一个文件格式/ $ C $，我应该在这种情况下使用CC？
Is there a file format/codec that I should use in this case?
推荐答案
它曾经是，没有常见的音频编码格式为Android和iPhone。
It used to be that there were no common audio encoding formats for Android and iPhone.
iPhone：<一href="http://developer.apple.com/library/ios/#documentation/AudioVideo/Conceptual/MultimediaPG/UsingAudio/UsingAudio.html%23//apple_ref/doc/uid/TP40009767-CH2-SW6">iPhone音频编码支持的格式
Android版本：的Android支持的媒体格式
Android: Android supported media formats
但是Android 2.3.3增加了对AMR-WB和AAC支持：<一href="http://developer.android.com/reference/android/media/MediaRecorder.AudioEn$c$cr.html#AAC">Android音频恩codeR AAC
But Android 2.3.3 adds support for AMR-WB and AAC: Android Audio Encoder AAC
请参阅媒体框架在的Android 2.3.3 API变更
所以，我相信，如果你想互操作的Android和iPhone设备之间可以处理的Android 2.3.3限制AAC是您的格式选择。
So I believe AAC is your format choice if you want interop between Android and iPhone devices and can handle the Android 2.3.3 limitation.
否则，只需从列表中选择了覆盖面最广（在Android AMR-NB）或计划将录制的音频，以适当的格式。
Otherwise, just pick from the list for widest coverage (AMR-NB on Android) or plan on converting the recorded audio to a suitable format.
一个快速检查表明，AMR是专利，我以为AAC会有些专利保护为好。 PCM解码是在iPhone和Android手机大部分在较大的文件大小为代价的。
A quick check shows that AMR is patented and I assume AAC would have some patent coverage as well. PCM is decodable on iPhone and Android and most cellphones at the expense of larger filesize.
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