Monday, October 22, 2012

Audacity slow-down calculator

*Note: this article is out-dated.  Or, no-worth.  I found that audacity fixed noise problem with tempo change.

If you play music, audacity is an essential tool for many useful things.  Copying music, Ear training, etc.  When slowing down original source using "change tempo", annoying noise mixes with proper output.   I walk two step to avoid noise.  "change speed" and "change pitch".

How much parameter to give to slowdown but no noise, no pitch change is calculated.

#!/usr/bin/env python

import os
import sys

a = raw_input("slow down percent (50% half speed): ")
target_speed = float(a)
target_pitch = ( 100.0 - target_speed ) / target_speed * 100

print "target pitch change: %2.2f" % target_pitch

Wednesday, October 3, 2012

About Enthusiasm

I read a Korean article (, and One made me think for a while is this:

요즘 드는 또 다른 생각이 열정이란 만들어 내는 것도, 지켜내는 것도 아닌 주어지는 것 같습니다. 마치 천부적 재능이, 말 그대로 주어진 것이듯 ,열정도 주어지는 것인 것 같습니다. 뭔가 매우 비관적이고 운명론적 사고관이지만, 요즘 드는 생각이 그렇습니다. 열정을 가져 보아라, 열정이 꺼지지 않도록 잘 지켜라는 조언은 천부적 재능을 받아 보아라, 왜 예쁘게 태어나지 않았니 라고 하는 것과 같은 부질없는 이야기 인 것 같습니다.

It's very difficult to argue or practically apply this sentence.  But, I want to say that the author is so brave to tell this, because this is hard to say or hard to find an answer in practical world.  After a while, I somewhat agreed.