You can use the following shortcuts to manage your audio or video narration.  

OperationShortcut

Alt+F

Application menu                           

R

Reset All Changes

S

Save and Close

E

Export to File

C

Close

Alt+M

Home Tab

S

Save and Close

D

Delete

I

Silence

T

Trim

N

Remove Noise

V

Adjust Volume

FI

Fade In

FO

Fade Out

ZS

Zoom Selection

ZA

Show All

Working with Clips and Timelines

Delete

Delete Selection

Ctrl+Z

Undo

Ctrl+Y

Redo

Ctrl++

Zoom In

Ctrl+ -

Zoom Out

S

Stop

Space

Play/Pause

Home

Go to the beginning of the clip (selection)

End

Go to the end of the clip (selection)

Arrows

Move cursor position backwards or forwards (small steps)

Ctrl+Arrows

Move cursor position backwards or forwards (bigger steps)

Ctrl+TTrim audio/video
InsertSilence selection or Insert silence