Description
Volume sets the volume level strangely enough! (note the sarcasm!). It's measured in db therefore a negative value will decrease the volume and a positive value will increase it. It can be changed in game by pressing the "tilde" (¬) key as well.
Alternative Command
-vol
Example
mame <gamename> -volume -5
Command Format
<gamename> -volume <value> . The value is a whole number and is rated in db therefore each number doubles the increase/decrease in volume. The example will halve the volume five times.
MAME's Default Setting
0