从 amr 文件获取音频

发布于 2024-12-03 03:48:03 字数 106 浏览 0 评论 0 原文

我是 j2me 开发世界的新手。 我只想知道如何从将数据存储在 .amr 文件中的音频录制应用程序获取音频。 请帮助我,我尝试了很多,但我很无助。 因此,任何有关此的想法都将受到赞赏。 提前致谢。

I am new in j2me developing world.
I just want to know that how to get audio frequency from the audio recording application which stores data in .amr file.
Please help me, I tried a lot, but I am helpless.
So any idea regarding this will be appreciated.
thanks in advance.

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雾里花 2024-12-10 03:48:03

我要在这里发布我从其他网站找到的内容,这些内容可能对你和我(作为新手)有用

  1. http://www.developer.nokia.com/Community/Discussion/showthread.php?154169-Getting-Recorded-Audio-Frequency-in-J2ME

如果您想要声音的频率Hz 那么它实际上不是一个单一的值,而是一系列作为时间函数的值。
您必须计算声音样本的傅里叶变换,这将为您提供频率。

在维基百科上阅读有关如何计算傅立叶变换和频率图的信息...

  1. http://www.developer.nokia.com/Community/Discussion/showthread.php?95262-Frequency-Analysis-in-J2ME-MMAPI

这个论坛说了一些关于 fft(fast fourrier变换)并分析录制的 amr 声音而不是处理实时流,并提供了 3 个关于 fft 的链接,这些链接就在这条线的下面,看看它们:..

im gonna ad here what i have found from the other sites that may be useful to you and me(as a newbie)

  1. http://www.developer.nokia.com/Community/Discussion/showthread.php?154169-Getting-Recorded-Audio-Frequency-in-J2ME

If you want frequency of sound in Hz then it is actually not a single value but a series of values as a function of time.
You will have to calculate fourier transform of the sound samples which will give you frequency.

Read about this on wikipedia on how to calculate fourier transform and frequency graph...

  1. http://www.developer.nokia.com/Community/Discussion/showthread.php?95262-Frequency-Analysis-in-J2ME-MMAPI

this forum says something about fft(fast fourrier transform) and analysing recorded amr sound rather than processing live stream and provides 3 link about fft which are right underneat this line have a look at them:..

妄断弥空 2024-12-10 03:48:03

查看网站 mobile-tuner.com。 (我也是新人。事实上我对java一无所知。)
但该网站称支持调谐器功能的手机是 s60 手机。我正在尝试编写吉他调音器程序。因为我的手机是诺基亚 5310 Express Music,也就是 s40,所以我放弃了。

祝你好运,

注意:javax.microedition.media.control.RecordControl

--我知道得不多,但我有一种预感,“记录控制”类或函数是相关的j2me中的音频功能。频率分析的东西在“声音处理”里面

look at the site mobile-tuner.com. (im new too. in fact i know nothing about java.)
but the site says that tuner function enabled phones are s60 phones. i was trying to write guitar tuner program. since my phone is nokia 5310 express music which is s40 i gave up.

so good luck to you

note: javax.microedition.media.control.RecordControl

--i don't know too much but i have a hunch about that ""Record Control"" class or function is related to audio frequency function in j2me. and the frequency analysis thing is inside the "sound processing"

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