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适当的音频格式可在Android手机上实现音效，并提高效率

[英]Appropriate audio format for sound effects on Android phones regarding efficiency

原文 2011-03-20 04:30:05 3 2 android/ performance/ mobile-phones/ power-management/ audio-player

I profiled my programs, and it turned out a large portion of CPU was spent on SoundPool.play() . 我分析了我的程序，结果发现很大一部分CPU花费在SoundPool.play() 。

The game has ~10 sound files, each under 1 second. 游戏中有〜10个声音文件，每个文件不到1秒。 Currently they are 64kbs variable MP3s. 目前，它们是64kbs可变MP3。 They are loaded to a SoundPool at the beginning and played frequently throughout the game. 它们在开始时就被加载到SoundPool中，并在整个游戏中经常播放。

My question: What audio format (eg mp3, ogg, etc.) is most friendly to cpu and battery consumption on mobile devices? 我的问题：哪种音频格式（例如mp3，ogg等）最适合移动设备上的cpu和电池消耗？ I use them only for sound effects, and there's no need for simultaneous playbacks. 我仅将它们用于声音效果，并且不需要同时播放。

Many thanks. 非常感谢。

2 个解决方案

As far as I know, there will be not much difference, as Android uncompresses the audio files before putting them into the SoundPool, in order to be able to quickly play them afterwards. 据我所知，两者之间并没有太大区别，因为Android在将音频文件放入SoundPool之前先对其进行解压缩，以便随后能够快速播放它们。 That's also the reason that you cannot put very many (or large) sounds into a sound pool without running out of memory. 这也是为什么您不能在没有内存不足的情况下将太多（或很大）的声音放入声音池的原因。

我希望WAV和MIDI等压缩程度很小的音频格式比MP3或Ogg消耗更少的CPU周期，但会占用更多RAM。