Editing Audio

0:00 When you edit a recording with narration or computer audio you'll see entries in the right column you can use to modify how the audio is used in the recording. 0:09 For example you can enable or disable the Computer Audio captured during recording by checking or uncheck this box. 0:17 Each of the different audio tracks is represented by a different color on the timeline. White for Narration and darker gray for Computer Audio. 0:26 Clicking the dropdown arrow gives you options to export a wav file of the Narration or Computer Audio and also import a replacement. For example if you wanted to export and modify it in another audio program then re-import to replace what was recorded. 0:42 You can also add background music by clicking the plus icon then browsing for a wav or mp3 file on your computer. 0:52 Music is represented by an even darker gray waveform on the timeline that we see here. 0:58 Background music is different from Narration and Computer Audio since it won't be effected by cuts or inserts you make to your recording. 1:06 For example if you add a cut to the recording it will cut the video, Narration, and Computer Audio over the cut section, but music won't be effected. 1:16 To remove background music that you added you can click the dropdown arrow here. 1:21 For each Audio type there are different options you can select to adjust the audio levels by clicking the icon shown here. The icon will show blue if there is some level adjustment in effect. 1:33 When you click on the icon you'll see the waveform turn blue for the audio type that you are adjusting which in this case is the Narration. 1:41 For all audio types you can choose to increase or decrease the overall volume by clicking these arrows. You can make these changes while the recording is playing back so you get real time feedback on how the levels sound as you adjusting them. If you do increase the levels watch out for cliping which means your audio is too high. You can tell if clipping is occuring by looking for red audio peaks on the timeline like these. To reset the levels you can click the Reset option here. 2:09 By default for Narration the app will enable "Noise Reduction" which will help take out background hiss captured by the microphone. We strongly suggest you use a good quaity USB mic when recording your narration since it will produce much better audio than the built in mic on your computer. 2:25 You can disable the "Noise Reduction" by clicking the check box which you can also do while the playback is running so you can hear the difference in real time. 2:34 Next we'll look at the options for adjusting Computer Audio. As with Narration you can increase or decrease the audio levels using these controls. By default the Computer Audio will have "Ducking" enabled which means the audio volume will lower when the Narration is active. For example, if you were recording a video off your screen with the computer audio and you start talking into the mic the computer audio would come down so your Narration can be heard more clearly. You can disable Ducking by clicking this checkbox. 3:05 Finally we'll look at the options for Music. As with Narration you can increase or decrease the audio levels using these controls. You also have the option to add a "Fade In" or "Fade Out" on the music which is setup to be a few seconds by default. You can adjust the fade by clicking on the value and then using the slider to adjust, or clicking the number value and entering a number. Music will also be setup to Loop by default so if the music you added isn't long enough to fill the video it will be looped. And again we have ducking so the music volume will turn down in the parts of your video that have Narration. 3:42 Besides these options to edit the overall volume levels you can also use the Volume tool to apply some changes over a section of your recording. You can find out more about that by watching the help tutorial for that tool which you can find by clicking this icon. 3:57 Another feature added more recently is the option to choose if Normalization should be applied to an audio track which is enabled by default. Normalization adjusts the volume levels for a track up or down to try and achieve the same loudness for each track. For example if you record both Narration and Computer Audio but the Computer Audio was recorded at a much higher volume, then Normalization will help reduce the volume of the Computer Audio track so it more closely matches the loudness of the Narration.