The speed control buttons allow you to speed up and slow down how fast a recorded sound plays. Speed up and slow down apply to the entire sound wave, not selected portions.
The volume control buttons enable you to cause a recorded sound play louder or softer. The volume buttons apply to selected portions of a sound wave.| Speed Up |
Pressing this button causes to recording to play about five percent faster. The pitch changes when you use this command, so use it with care. |
| Slow Down |
Pressing this button causes to recording to play about five percent slower. The pitch changes when you use this command, so use it with care. |
| Increase Volume |
Pressing this button causes the volume to increase about ten percent. If you use this command too much, you can reach the maximum amplitude. Further increases will not increase the volume, and will clip the top parts of the sounds. This can result in some distortion when you play it back. |
| Decrease Volume |
Pressing this button causes the volume to decrease about ten percent. If you use this command too much, you can lose resolution of the softer sounds. This can cause distortion when you play it back. |
| Normalize |
The normalize button increases the sound as much as possible without distortion. If a small portion of the signal is very loud, it could appear as if the command doesn't work. If the loud portion is very small (a few microseconds), you might not be able to hear it. Normalize will work if you first silence or lower the volume of the portion of the wave that is loud. You can find this part by zooming in and looking for the high amplitude sections in the display. Refer to the sound display page for details as to how sounds display. |