Problem sensing microphone
in
Core Library Questions
•
1 month ago
Hi, I´m using the Minim library to use the microphone of my mac computer, I want to play my violin and sensing the sound (with this microphone) then I want to convert the frecuency in midi notes to compare each note with a midi score that I have in processing, the problem is when I play my violin don´t sensing correctly the note, more in the bass string and have a delay to detect with note is. I don´t know if I need a calibrator and how can I do it? or if I need other thing? This is the code for sensing the microphone and convert to midi note
import ddf.minim.analysis.*;
import ddf.minim.*;
Minim minim;
AudioInput in;
FFT fft;
float pitch;
float highestAmp = 0, freq, frequency;
float amplitude;
void setup()
{
size(512, 200, P2D);
minim = new Minim(this);
minim.debugOn();
in = minim.getLineIn(Minim.STEREO);
fft = new FFT(in.bufferSize(), in.sampleRate());
}
void draw()
{
background(0);
stroke(255);
fft.forward(in.mix);
highestAmp = 0;
for(int i = 0; i<20000; i++){
amplitude = fft.getFreq(i);
if(amplitude>highestAmp){
highestAmp = amplitude;
frequency = i;
}
}
pitch = round(69 + 12*(log(frequency/440.0)/log(2.0)));
println(pitch);
}
void stop()
{
minim.stop();
super.stop();
}
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