EDA ED-HMI2120-101C - Configuring Audio; Adjusting the Volume

5 Configuring System
ED-HMI2120-101C User Manual 5-35
5.11 Configuring Audio
ED-HMI2120-101C contains one audio input (supports access to MIC) and one extended speaker
output. The volume of Master, MIC and Speaker can be adjusted, and support recording.
5.11.1 Adjusting The Volume
It supports manual adjustment of MIC, Speaker and Master volume.
 If you are using the Desktop version of the operation system, you can adjust the volume of the
MIC and Master directly through the desktop icon.
Steps:
1. Click the icon or in the upper right corner of the desktop to open the volume
adjustment colume.
2. Drag the button of the volume adjustment column up and down to adjust the volume, check
or uncheck the Mute check box to mute or unmute the audio.
 Both Desktop and Lite versions of the operation system support opening the volume adjustment
interface through the command line to adjust the volume.
Steps:
1. Execute the following command to open the volume adjustment interface.
alsamixer