Fara Code | برنامه نویسی

#!/usr/bin/env ruby

# Install the wavefile gem by running: gem install wavefile
require 'wavefile'
include WaveFile

# Config :
num_channels = 1
sample_rate = 44100
duration = 6.0

# Generate Sound
Writer.new("noise.wav", Format.new(:mono, :pcm_16, sample_rate)) do |writer|
  samples = (0...sample_rate * duration).map do |i|
  
    sine_wave = (
      Math.sin(2 * Math::PI * 220 * i / sample_rate) + # 220 Hz 
      Math.sin(2 * Math::PI * 440 * i / sample_rate)   # 440 Hz 
    )

    # Add noise
    noise = rand * 0.2 - 0.1

    # Combining sinusoidal frequency with noise
    (sine_wave + noise) / 2.0

  end

  writer.write(Buffer.new(samples, Format.new(:mono, :float, sample_rate)))
end

def noise(time)
  amplitude = 0.5
  frequency = 440.0
  sampling_rate = 44100.0
  phase = 0.0

  wave = Math.sin(2 * Math::PI * frequency * time / sampling_rate + phase)
  noise = rand * 2 - 1

  result = amplitude * wave + 0.1 * noise
  return result
end

puts "Audio noises:"

time = 0
(1024 ** 2).times do
  puts noise(time)
  time += 0.001
end