|Jean LeLoup & Bob Ponterio
© 1997, 2008
Edit this poorly recorded sound
using Audacity or Audition (formerly Cool Edit) to clean up the following problems:
Refer to the previous instructions on sound editing if needed.
To produce small sound file, be sure to limit the sample rate (11 kHz may be adequate for voice) and use mono reather than stereo. A 44 kHz stereo WAV file will be 8 times as large as an 11 kHz mono WAV file.
MP3 compression will also make a significant difference but may require some setup adjustments to control how much compression you want to use. There is always a trade off between file size and sound quality. You just have to try out some different mp3 settings and decide what sounds ok to your ear. The main compression setting for mp3 is Kbps (kilobits per second = a measure of how many 1s and 0s in the file are used to represent one second of sound). Typical mp3 music files are stereo, 44 kHz, 128 kbps. This is much better quality than you need for voice.