![]() Choose Effects > Silence to convert the audio to silence. Play back the selection, and you’ll hear reversed speech. However, if you play this, you’ll hear no audible difference. Note that the positive and negative sections are flipped, so the positive peaks are now negative and vice versa. Play the file to hear what it sounds like, and then select the part at the beginning that says, “Most importantly, you need to maintain good backups of your data.”.Choose File > Open, navigate to the Lesson04 folder, and open the file NarrationNeedsHelp.wav.Silence replaces the selected audio with silence. ![]() Reverse flips an audio selection so that the beginning occurs at the end and the end at the beginning. Invert changes the signal’s polarity (commonly called phase) and produces no audible difference. Loop repeats the selected portion of the audio when you click Play. However, you can still audition any changes before applying them, because most effects chosen via the effects categories have a Play and Loop button to the right of the effect’s power on/off button. Unlike the Effects Rack, editing is destructive (although the changes aren’t made permanent unless and until the file is saved).Clicking Apply applies the effect to the selected audio. ![]()
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