simple python script that generates a set of smoothly looping tones

tones.py

import math, wave, array

filenames = []
for filename in range(32):
    x = filename % 8
    y = filename / 8
    filenames.append(str(math.trunc(y)) + str(x))
    
# use range to generate tones (lowest Hz, highest Hz, steps in Hz between)
for frequency in range(20, 460, 20):
    volume = 100 # percent
    data = array.array('h') # signed short integer (-32768 to 32767) data
    sampleRate = 44100 # of samples per second (standard)
    numChan = 1 # of channels (1: mono, 2: stereo)
    dataSize = 2 # 2 bytes because of using signed short integers => bit depth = 16
    numSamplesPerCyc = int(sampleRate / frequency)
    cycle = int(sampleRate / frequency)
    for i in range(cycle):
        sample = 32767 * float(volume) / 100
        sample *= math.sin(math.pi * 2 * (i % numSamplesPerCyc) / numSamplesPerCyc)
        data.append(int(sample))
    f = wave.open(filenames[iteration] + '.wav', 'w')
    f.setparams((numChan, dataSize, sampleRate, cycle, 'NONE', 'Uncompressed'))
    f.writeframes(data.tostring())
    f.close()