Zoom out vertically

`Alt` + `-`

All hotkeys for Adobe Audition

Playing and zooming audio Toggle between Waveform and Multitrack Editor	`8`
Playing and zooming audio Start and stop playback	`Space`
Playing and zooming audio Move current-time indicator to beginning of timeline	`Home`
Playing and zooming audio Move current-time indicator to end of timeline	`End`
Playing and zooming audio Move current-time indicator to previous marker, clip, or selection edge	`Ctrl` + `←`
Playing and zooming audio Move current-time indicator to next marker, clip, or selection edge	`Ctrl` + `→`
Playing and zooming audio Toggle preference for Return CTI To Start Position On Stop	`↑ Shift` + `X`
Playing and zooming audio Zoom in horizontally	`=`
Playing and zooming audio Zoom in vertically	`Alt` + `=`
Playing and zooming audio Zoom out horizontally	`-`
Playing and zooming audio Zoom out vertically	`Alt` + `-`
Playing and zooming audio Add marker	`M`
Playing and zooming audio Add marker	`*`
Playing and zooming audio Move to previous marker	`Ctrl` + `Alt` + `←`
Playing and zooming audio Move to next marker	`Ctrl` + `Alt` + `→`
Editing audio files Repeat previous command (opening its dialog box and clicking OK)	`↑ Shift` + `R`
Editing audio files Repeat previous command (opening its dialog box but not clicking OK)	`Ctrl` + `R`
Editing audio files Open Convert Sample Type dialog box	`↑ Shift` + `T`
Editing audio files Capture a noise reduction profile for the Noise Reduction effect	`↑ Shift` + `P`
Editing audio files Activate left channel of a stereo file for editing	`↑`
Editing audio files Activate right channel of a stereo file for editing	`↓`
Editing audio files Make spectral display more logarithmic or linear	`Ctrl` + `Alt` + `↑ ↓`
Editing audio files Make spectral display fully logarithmic or linear	`Ctrl` + `Alt` + `Page Up`
Editing audio files Make spectral display fully logarithmic or linear	`Ctrl` + `Alt` + `Page Down`
Editing audio files Increase or decrease spectral resolution	`↑ Shift` + `Ctrl` + `↑ ↓`
Mixing multitrack sessions Select the same input or output for all audio tracks	`Ctrl` + `↑ Shift`
Mixing multitrack sessions Activate or deactivate Mute, Solo, Arm For Record, or Monitor Input in all tracks	`Ctrl` + `↑ Shift` + `Mouse left click`
Mixing multitrack sessions Maintain keyframe time position or parameter value	`↑ Shift` + `Mouse movement`
Mixing multitrack sessions Reposition envelope segment without creating keyframe	`Ctrl` + `Mouse movement`
Mixing multitrack sessions Nudge selected clip to the left	`Alt` + `,`
Mixing multitrack sessions Nudge selected clip to the right	`Alt` + `.`