A volume constant is a value that represents the sound volume of a PlayStation voice channel. One volume unit corresponds to the maximum volume value of 16383 (0x3FFF). A volume constant can be written as any integer or real number followed by the suffixes V or v.

Either the integer part or the fractional part may be omitted, but not both. Here are some examples of valid volume constants: 0.3V 1V 0.2V +0.5V

Negative values, or values too large, will not be treated nicely by the console.