混合音频文件 [英] Mixing Audio Files

问题描述

我有一些音频文件：

• 在F_1 - 长度为10秒
• F_2 - 长3秒
• F_3 - 长1秒

我需要的是找到一种方法来在F_1混合（合并），F2和F3在特定部分（即位置等于6秒）

What I need is to find a way to mix(merge) f2 and f3 at particular section in f_1 (i.e. position which is equal to 6 sec)

我是看着音频的例子，但他们不帮我很多，所以任何想法\引用\可能帮助文档？

I was looking at Audio examples but they don't help me much so any ideas\references\ documentation that might help?

非常感谢！

推荐答案

不幸的是，我不认为有设备做文件mixdowns上的任何东西。在我看来，你有两个选择：

Unfortunately, I don't think there's anything on the device to do file mixdowns. As I see it, you've got two options:

1）同时发送文件到服务器，然后使用的ffmpeg或其他一些免费工具做mixdowns。

1) Send both files to a server and use ffmpeg or some other free tool to do the mixdowns.

2）如果它的东西，必须留在本地的电话，您可以加载使用Android的Soundpool音频（http://developer.android.com/reference/android/media/SoundPool.html），并将其设置为发挥在同一时间。您在这里可以找到这个问题一个很好的教程：<一href="http://www.droidnova.com/creating-sound-effects-in-android-part-1,570.html">http://www.droidnova.com/creating-sound-effects-in-android-part-1,570.html

2) If it's something that must stay local to the phone, you could load the audio using the Android SoundPool (http://developer.android.com/reference/android/media/SoundPool.html) and set them to play at the same time. You can find a good tutorial on the subject here: http://www.droidnova.com/creating-sound-effects-in-android-part-1,570.html

声池要求您管理多个文件，而不是做mixdowns和播放的单个文件。这将是冷静，如果在的Soundpool让你虎视眈眈作为iostream的，但是，唉，该SDK似乎并没有允许它的输出。此外，这将是，如果AudioRecorder让你抢的音乐层流很好......但看起来并不可能要么。音频输入列表：<一href="http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html">http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html

The sound pool requires you to manage multiple files rather than doing mixdowns and playback of a single file. It would be cool if the soundpool let you grap the output as a IOStream but, alas, the SDK doesn't seem to allow it. Further, it would be nice if the AudioRecorder allowed you to grab a stream from the music layer...but that doesn't look possible either. List of audio inputs: http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html

我知道这是不是你在寻找什么，但希望你能够从某些环节得到了解决方法。

I know this isn't exactly what you're looking for, but hopefully you can get a workaround from some of the links.

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