audio - 如何获得 ChuckK 中麦克风的频率？

Question

我需要获取来自麦克风输入的频率，以便根据麦克风音调在音序器或任何乐器上播放某些音符。我使用此代码输出麦克风

adc => dac;  
while(true){
    0.1::second=>now;
    }

adb 上是否有任何功能可以做我想做的事情？谢谢！:D

Answer 1

最简单的方法是修改 Spectral Centroid UAna 示例。

/// sending the mic through the analysis instead of SinOsc
adc => FFT fft =^ Centroid cent => blackhole;

float trackedFrequency; 

512 => fft.size;
Windowing.hann(512) => fft.window;

second / samp => float srate;

while( true )
{
    cent.upchuck();

    // modifying the example to put the analysis in a variable
    cent.fval(0) * srate / 2 => trackedFrequency; 
    <<< trackedFrequency >>>; // use it set the frequency of something else

    fft.size()::samp => now; // advance time
}