From: "Ron S." <lists@...>
Date: 2012-11-20T00:37:10+09:00
Subject: Missing Something

I am an amateur programmer, and I feel I am missing something. Whenever
I've tried to understand certain aspects of programming, I often feel I
am just "missing something." And most instruction doesn't help (usually
because of overly clever examples... like: Okay class, today we are
talking about classes. So we'll use this class as an example. We'll
create a "class" called "class" and since classes have members we'll
create a member for each member of the class. Then we'll create a
variable in the class called "class" where we'll store how classy
everyone in the class is. Now... how many of you wear glasses?)

I really just want my programs to DO SOMETHING. And I am trying to
develop a sort of automated analog synthesizer that works with files in
the .wav format. So my question is... what is WRONG with something like
this?

#! usr/bin/env ruby
require 'wavefile'
include Math

frames = (ARGV[0].to_f * 44100.0).to_i
volume = ARGV[1].to_f
freq   = 44100.0 / (ARGV[2].to_f)
file   = ARGV[3]
w      = WaveFile.new(1, 44100, 16)

(0..frames).each do
  |frame|
  w.sample_data[frame] = sin(frame * 2.0 * PI / freq) * volume * 32767
end

w.save(file)

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