Any '--sound <internal file>' parameters?

[bs27975]

https://chris.dziemborowicz.com/apps/hourglass/#command-line-arguments notes:

--sound none|last|<sound>

Within a timer's menu are the sound options:

• no sound
• loud beep
• normal beep
• quiet beep
• loop sound

Are there any valid values for the 'internal' sounds for the --sound parameter, such as: loud, normal, or quiet?