Contents
(1)
Main
(2)
Background of Audio on the Web
(3)
Hardware and Software
(4)
Recording Audio
(5)
Encoding Audio
(6)
Creating Learning Web Pages
(7)
Web Resources

RealPlayer

(4) Recording Audio

Randall S. Davis
English Language Institute
University of Utah



[Non-embedded Player Version]

1. Avoid Background Noise
  • Turn off your room's air conditioner, shut your windows, feed your baby before you start the recording session.
2. Use a High-quality Microphone:
  • omni-directional, uni-directional, clip-on mics, built-in mics.
3. Choose Sampling Settings:
  • At least 22 kHz, 16 bits, mono (AM radio quality).


5.564 kHz, 8 bit
Dirt Cheap (21kbs)

44.1 kHz, 16 bit
Crisp and Clear Version (312kbs)

4. Adjust Volume Levels to Avoid Clipping and Distortion

adjust volume levels


Too Loud

Okay

adjust volume levels

5. Record: Here is a screen shot of the popular sounding editing program, CoolEdit, for Windows.

Screen shot of CoolEdit

6. Save Raw Sound File

7. Edit as Needed

8. Test your Sound file

  • Use good headphones or speakers on different computer platforms.
9. Noise Gate Sound File: Make silent sections in audio really silent.

noise gate

10. Normalize

  • Raises the volume level of file to the maximum before distortion sets in.
11. Save Edited Sound File