Arduino-Scrolltext-Weather-Report/graphic-eq.py

from connection import *
from audioHandler import Listener
import numpy as np
import time

matrix = SerialConnection()
matrix.open()

pitches = [(2**(1/12))**(n/11*12*7-24) * 220 for n in range(11)]
audio = Listener(1/30, 30)
audio.start()
nFFT = audio.buffersize
audio.fftSetLimits(nFFT, min(pitches), max(pitches))
audio.agcFftSetLimits(60/60, 300/60)

while True:
  if audio.hasNewData():
    left, right, fft = np.copy(audio.left), np.copy(audio.right), np.copy(audio.fft)
    
    sums = audio.fftGroup(fft, pitches)
    data = [0] * 50
    for row in range(N_ROWS):
      for col in range(N_COLS):
        val = 15 if sums[col] > ((N_ROWS-row)/N_COLS/2) else 0
        data[row*N_COLS+col]= val
    print(data)
    matrix.send(b'A' + bytes(data))

    time.sleep(1/40)