Keyboard shortcuts

VERO-BAAMBI supports keyboard shortcuts for efficient broadcast workflow.

Global Shortcuts

These shortcuts work anywhere in the application (except when focused on input fields).

Key	Action	Notes
`Space`	Play/Pause measurement	Toggle (tap) or momentary (hold >300ms)
`P`	Play/Pause measurement	Same behaviour as Space
`R`	Reset integrated	Resets I and LRA; visual feedback on button
`C`	Session capture toggle	When hotkey enabled in Session Capture panel
`Tab`	Toggle sidebar menu	Show/hide settings panel
`F`	Toggle fullscreen	Uses native Fullscreen API

Meter Selection

Switch between meter modes instantly using number keys.

Key	Meter Mode	Description
`1`	True Peak	ITU-R BS.1770-4 intersample detection
`2`	RMS	Root mean square level display
`3`	Sample Peak	IEC 60268-18 / AES17
`4`	Nordic PPM	IEC 60268-10 Type I
`5`	BBC PPM	IEC 60268-10 Type IIa

History Trace Toggles

Toggle visibility of loudness history traces.

Key	Trace	Description
`S`	Short-term	3-second integrated loudness
`M`	Momentary	400ms integrated loudness
`I`	Integrated	Programme loudness (gated)
`T`	True Peak	Maximum true peak level
`K`	K-weighting	Frequency weighting curve overlay

Play/Pause Behaviour

The play/pause function follows EBU Tech 3341 recommendations:

Tap (short press <300ms):

Toggles between play and pause states
State persists after key release

Hold (long press >300ms):

Momentary pause while held
Automatically resumes on key release
Useful for checking readings without losing context

This dual behaviour mirrors professional hardware implementations where momentary hold allows quick inspection without disrupting the measurement session.

When the meter tab bar has focus, additional navigation is available:

Key	Action
`←` `→`	Navigate between tabs
`↑` `↓`	Navigate between tabs (alternative)
`Home`	Jump to first tab
`End`	Jump to last tab
`Enter` / `Space`	Activate focused tab

Input Field Shortcuts

When focused on numeric input fields:

Key	Action
`Enter`	Apply value and blur field

Browser Shortcuts (Not Overridden)

These standard browser shortcuts are preserved:

Key	Action
`Cmd+R` / `Ctrl+R`	Browser refresh (not intercepted)
`Cmd+F` / `Ctrl+F`	Browser find (not intercepted)

Future Considerations

Key	Proposed Action	Status
`Esc`	Close modal dialogs	Standard behaviour
`?`	Show shortcuts help	Not implemented

Implementation Reference

Keyboard handling is implemented in:

src/app/bootstrap.js — Global shortcuts (R, C, Tab, F, 1-5, S/M/I/T/K, Space/P)
src/app/bargraph-meter.js — Tab navigation (arrows, Home/End)

All shortcuts:

Skip processing when focus is on input, textarea, or select elements
Prevent default browser behaviour where appropriate
Provide visual feedback on associated UI elements