圣诞灯显示如何选择使用外部音频输入

是的，我会使用FFT，实际上我一直都有这样的“心理灯”的软件，但从来没有工作过。



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    Yeah, I would use FFT indeed
I always had in mind such "psycho-lights" made in software but have never worked on it...

可以用几种方法。旧的方法是用一些离散的通滤波器。



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    It can be done several ways. The old way was with a few discrete pass filters.

我做了很多次“老办法”



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    I did it many times "the old way"

好的，谢谢你。在过去的3年里，我买了两件买的东西，但它们都是一样的款式。第一台融化了进来的塑料外壳，第二台大约两天后因为变压器坏而退出，我必须修理它。



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    OK thanks you guy. I have had two commericaly bought ones in the last 3 years but they were the same model. The first one melted down the plastic case it came in, and the second one quit after about 2 nights because of a bad transformer, which I had to fix.
 
I am contemplating a 16 output channel device.

我先从老式的3盏灯开始，但确实有一个DSPIC，你可以得到多少你想要的。



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    I would start with the old-style 3 lamps basic one, but indeed with a dsPIC you can get as many as you want

嗨，蒂姆。为了让事情更复杂，更难实施，学习“等响度轮廓测量，让你的设置更自然地发光人类的听觉。”否则你的频道会有不同的表现。原则上，它应该足以通过它自己的校正系数来提供每个频率信道，该校正系数可以从等响度曲线中选择。使用80phon曲线，因为大部分的音乐都是以这种响度水平掌握的，即使你是以背景再现。如果你精通DSP，可能有所不同，可能不是一个有效的方法。在应用FFT之前，您可以对音频流应用ReplayGain滤波器，以便对数据应用等响度计数器。必须注意，为了获得最佳感知，通道的频带应该在对数频率尺度上是均匀的。这就是为什么要获得16个通道的光效应需要超过16个的FFT波段。我以前也做过类似的研究。不要使用大于40Hz或16kHz的范围。你可以走得更窄，这取决于你的音响系统。80Hz，12kHz也是合理的范围。因此，在24…32 KHZ中采样音频。查看附件，一个带有BIN记帐的Excel文件。



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    Hi, Tim.
To make things more complex and harder to implement, learn the "Equal-loudness contour measures to make your setup glow more naturally to the human hearing. Else way your channels will behave differently. In principle it should be enough to provide each frequency channel by its own correction coefficient which may be chosen from equal-loudness curve. Use 80phon curve because most of the music is mastered for this level of loudness, even if you'll reproduce as a background.
If you're crafty in DSP, there is different, may be not an efficient way. You may apply ReplayGain filter right to your audio stream to apply equal loudness counter to the data before applying an FFT.
Mention must be noted that for the best perception the frequency bands of your channels should be uniform on logarithmic frequency scale. That is why the much more than 16 bins FFT is needed to got 16 channels of light effects.
I've investigate similar things before. Do not use the range wider than 40Hz..16kHz. You may go even narrower, depending on your acoustic system. The 80Hz..12kHz is reasonable range too. So sample the audio at 24..32kHz.
Take a look at an attachment, an Excel file with bins accounting.

对不起，没什么好运气的。酷！F*论坛引擎。成功！



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    Sorry, no luck to attach.
Cool! F* forum engine. Succeed!
   Attachment(s)

MusicLights.zip (9.89 KB) - downloaded 64 times

谢谢你的想法



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    thanks for the ideas Nikolay

尼古拉写道：“为了让事情变得更复杂，更难实施，”“非常有趣，让我咯咯笑……”我们都在寻找让事情变得更困难的方法，嗯？哈哈，哈哈，但是…有趣的建议，谢谢分享！微笑：



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    Nikolay wrote: "To make things more complex and harder to implement, ..."
 
Very funny, made me chuckle... We are ALL always looking for ways to make things harder, eh?
Ha, ha, ha, ha...
 
However: Interesting suggestion, thanks for sharing!
Smile: