Advantech PPC-140, PPC-120 manual Controlling volume in DOS

8.2.3 Controlling volume in DOS

The ES1869 audio controller provides software control of the settings for audio volumes. The VOLUME CONTROL utility located in the UTILITY\Audio\ subdirectory of the CD-ROM is used to control the volume settings in DOS. To control the volume settings, simply type "ESSVOL" at the DOS prompt with appropriate parameters. The script for ESSVOL is:

ESSVOL [/?] [/v:xx] [/l:xx] [/w:xx] [/m:xx] [/c:xx] [/s:xx] [/a:xx]

no option	Display all volume settings
/?	Display this message
/v	Change master volume
/l	Change line volume
/w	Change wave volume
/m	Change microphone volume
/c	Change CD volume
/s	Change synthesizer volume
/a	Change AuxB volume
/p	Change PC speaker volume
xx	Volume. Note: no xx means 0

The value range for volume is 0 ~ 15. (The PC speaker volume range is 0 ~ 7.)

90 PPC-120/140 User's Manual