blocks|key|5808532|text|NDK附带了一个名为NativeAudio的示例应用程序。它有几乎所有你想要实现的例子:效果，流，合成等等。如果你看一下它的代码，你会有一个很好的开始。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5808533|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/googlesamples/android-ndk/tree/master/native-audio^0|A|B|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

There's an example app that comes with the NDK called <a href="https://github.com/googlesamples/android-ndk/tree/master/native-audio" rel="nofollow noreferrer">NativeAudio</a>. It has examples of nearly anything you would ever want to implement: effects, streaming, synthesis, etc. If you look at its code, you'll get a good head start.

blocks|key|5808593|text|你也可以看看维克多·拉扎里尼的音频编程博客，它有一个安卓部分：http://audioprograming.wordpress.com/category/android/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5808594|在那里你可以找到工作示例，它们对我开始使用openSL非常有用，并且可以作为使用ndk开发音频应用程序的基础。|5808595|另外，不要忽视规范文档，毕竟它不是很长，第一部分不超过50页，它为您提供了理解一切工作原理所需的视角，其余部分仅供参考。注意，android+openSL实现中的一些内容与规范有所不同:有关这方面的更多信息，请参阅-ndk-directory/docs/opensles/index.html中的。|5808596|entityMap|0|LINK|mutability|MUTABLE|url|http://audioprograming.wordpress.com/category/android/^0|V|1I|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

You could also check victor lazzarini's audio programming blog, it has an android section: <a href="http://audioprograming.wordpress.com/category/android/">http://audioprograming.wordpress.com/category/android/</a> 

There you will find working examples, they were extremely useful to me to get started with openSL and can be used as a base to develop audio applications with ndk.

And also, don't overlook the specifications document, it's not so long after all, the first part is no more than fifty pages and gives you the needed perspective to understand how everything works, the rest is for reference use. Be careful that some things in android openSL implementation differ from the specifications: see in your-ndk-directory/docs/opensles/index.html for more informations about this.

blocks|key|1758320|text|经过相当多的搜索，我发现了更有价值的信息：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1758321|1758322|包含在NDK中的NativeAudio项目是一个很好的开始。|unordered-list-item|offset|length|1758323|也是一个很好的起点"Android+NDK+Beginner's+Guide"+by+Sylvain+Ratabouil一书的第七章“用OpenSL+ES播放声音”(你可以使用"look+inside“功能在亚马逊上看看，或者购买亚马逊也是一个很好的例子。所有荣誉和感谢他们的作者。|1758324|1758325|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/googlesamples/android-ndk/tree/master/native-audio|1|https://rads.stackoverflow.com/amzn/click/com/1849691525^0|0|0|8|B|0|0|9|1F|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|W|8|@]|9|@$F|X|G|Y|1|Z]]|A|$]]|$1|H|3|I|5|E|7|10|8|@]|9|@$F|11|G|12|1|13]]|A|$]]|$1|J|3|-4|5|6|7|14|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]|S|$5|N|O|P|A|$Q|T]]]]

After a quite searching the more valuable information I've found:

<ul>
<li>The <a href="https://github.com/googlesamples/android-ndk/tree/master/native-audio" rel="nofollow noreferrer">NativeAudio</a> project included in NDK is a good start.</li>
<li>Also it's a great start point the chapter 7 "Playing Sound with OpenSL ES" of the book <a href="https://rads.stackoverflow.com/amzn/click/com/1849691525" rel="nofollow noreferrer" rel="nofollow noreferrer">"Android NDK Beginner's Guide" by Sylvain Ratabouil</a> (You can take a look in amazon using the "look inside" feature or buy it).</li>
<li><a href="https://github.com/jkytomaki/opensl-soundpool" rel="nofollow noreferrer">This google code project for replace SoundPool with OpenSL</a> is a great example too. All credits and thanks to their authors.</li>
</ul>

blocks|key|2280459|text|对于那些只想播放单个声音文件或录制短快照(在单个缓冲区中)的人来说，NDK项目就足够了。我看过"Android+NDK初学者指南“，除了示例NDK项目之外，它并没有解释太多。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2280460|但实际上，对于这些应用程序，您最好使用其中一个Java+API。对他们使用OpenSL+ES有点过头了。将会有更多的代码需要编写，而不会有真正的收获。|2280461|OpenSL的优势是对于那些对音频合成和处理的较低延迟(当这些延迟变得可用时)感兴趣的人，因此，您可能想要流式音频，而不是播放/录制单个缓冲区。书中的章节和NDK示例不会教你这方面的知识。音频编程博客中的博客帖子为这些目的提供了更多的信息。|2280462|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

For those of you wanting just to play single soundfiles or record a short snapshot (in a single buffer), the NDK project will be enough.
I had a look at the "Android NDK Beginner's Guide" and it really does not explain too much more than the sample NDK project.

But really, for these applications, you are probably better off with one of the Java APIs. Using OpenSL ES for them is a bit of an overkill IMHO. There will be much more code to write and no real gain.

The advantage of OpenSL is for those interested in lower latencies (when these become available) for audio synthesis and processing, and for this, you will probably want to stream audio, rather than play/record single buffers. The book chapter and the NDK example will not teach you about that. The blogposts in the audio programming blog are more informative for these purposes.

blocks|key|4392824|text|维克多·拉扎里尼在android上的音频编程博客是一个很好的开始。http://audioprograming.wordpress.com/category/android/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4392825|这里有一个可以直接从bitbucket+git仓库下载的示例代码，这是最受欢迎的部分。|4392826|构建和运行非常简单。对我来说，我需要这些步骤来构建和运行这个示例：|4392827|4392828|安装SWIG：swig-3.0.2。分3步安装：|ordered-list-item|4392829|4392830|$+configure+$+make+$+sudo+make+install.|4392831|4392832|编辑build.sh以反映您的NDK的位置。并通过以下方式在顶层directory.|4392833|Generate项目运行build.sh脚本：$+android+build.xml+--name+opensl-es-audiotest+--target+1--build.xml。/|4392834|使用ant：$+ant+debug|4392835|构建然后，您可以将其安装到您的设备上并进行测试：|4392836|4392837|$+adb+install+bin/opensl-es-audiotest-debug.apk|4392838|entityMap|0|LINK|mutability|MUTABLE|url|http://audioprograming.wordpress.com/category/android/|1|http://prdownloads.sourceforge.net/swig/swig-3.0.2.tar.gz^0|X|1I|0|0|0|0|0|7|A|1|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@$A|1B|B|1C|1|1D]]|C|$]]|$1|D|3|E|5|6|7|1E|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|1F|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|1G|8|@]|9|@]|C|$]]|$1|I|3|J|5|K|7|1H|8|@]|9|@$A|1I|B|1J|1|1K]]|C|$]]|$1|L|3|-4|5|6|7|1L|8|@]|9|@]|C|$]]|$1|M|3|N|5|6|7|1M|8|@]|9|@]|C|$]]|$1|O|3|-4|5|6|7|1N|8|@]|9|@]|C|$]]|$1|P|3|Q|5|K|7|1O|8|@]|9|@]|C|$]]|$1|R|3|S|5|K|7|1P|8|@]|9|@]|C|$]]|$1|T|3|U|5|K|7|1Q|8|@]|9|@]|C|$]]|$1|V|3|W|5|K|7|1R|8|@]|9|@]|C|$]]|$1|X|3|-4|5|6|7|1S|8|@]|9|@]|C|$]]|$1|Y|3|Z|5|6|7|1T|8|@]|9|@]|C|$]]|$1|10|3|-4|5|6|7|1U|8|@]|9|@]|C|$]]]|11|$12|$5|13|14|15|C|$16|17]]|18|$5|13|14|15|C|$16|19]]]]

One of Victor Lazzarini's audio programming blog on android section is really a good start. <a href="http://audioprograming.wordpress.com/category/android/" rel="nofollow">http://audioprograming.wordpress.com/category/android/</a>

And there is a direct downloadable example code from bitbucket git repository for this blog, that's the most welcome part.

The build and run is quite simple. For me, I need these steps for build and run this example:

<ol>
<li>Install SWIG: <a href="http://prdownloads.sourceforge.net/swig/swig-3.0.2.tar.gz" rel="nofollow">swig-3.0.2</a> . Install it by 3 steps: 

<blockquote>
 $ configure
 $ make
 $ sudo make install.
</blockquote></li>
<li>Edit the build.sh to reflect the location of your NDK. And run the build.sh script at the top-level directory.</li>
<li>Generate build.xml by: 


<blockquote>
 $ android update project --name
 opensl-es-audiotest --target 1 --path ./</li>
 <li>Build with ant: $ ant debug</li>
 <li>Then, you can install it to your device and test it:
</blockquote>

<blockquote>
 $ adb install bin/opensl-es-audiotest-debug.apk
</blockquote></li>
</ol>

I've been trying to look into using the OpenSL ES library that is available for doing native audio with android 2.3, but it appears that the header files and the 600 page pdf of the spec are the only available documentation.

Where should I be looking for examples, tutorials, or a brief overview of the capabilities?

Tutorials for OpenSL ES for Android

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我一直在尝试使用android ES库，该库可用于在android2.3中制作原生音频，但似乎规范的头文件和600页的OpenSL文档是唯一可用的文档。我应该在哪里寻找这些功能的示例、教程或简要概述？

问用于安卓系统的OpenSL ES教程
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