local audio = require "audio"
require "table2"

local sample_rate = 44100
local duration = 8
local data = table.rep(sample_rate * duration, 0)
local freqs = {261.6, 293.6, 329.6, 349.2, 392.0, 440.0, 493.9, 523.3}
for j = 0, duration - 1 do
    local freq = freqs[j + 1]
    local omega = 2 * math.pi * freq
    for i = 0, sample_rate - 1 do
        local y = math.round(32 * math.sin(omega * i / sample_rate)) & 255
        data[i + j * sample_rate + 1] = y
    end
end
local filepath = "musical_scale.wav"
audio.create(filepath, data, sample_rate)
audio.play(filepath)