Alsamixer Modifying Linux sound parameters

Alsamixer is one of the ALSA tools in the Linux audio architecture Alsa that configures the various parameters of the audio.
Alsamixer is based on the text under the graphical interface, can be through the keyboard keys, left and right keys, etc.,
It is convenient to set the required volume, switch a switch (switch) and so on.

The command is as follows:

#alsamixer
It will pop up the sound parameter modifier panel, where the sound is set.

Amixer, is the alsamixer text mode, which is the command line mode,
You need to configure the various options for your sound card in the form of a amixer command.

1. Take a look at what commands the amixer supports, and what the features are about
# amixer--help

2. Take a look at your current audio system (different audio drivers correspond to different content and operating interfaces)
Provides the interfaces that you use to operate
about how many interfaces the driver has provided can be manipulated, with commands:
Amixer controls
To view, for example:
# Amixer Controls

To see, of course, what configuration parameters are supported by your Linux kernel, as above, there are more than 20 parameters available for you to configure.
And for all of the configured values of course, this can be viewed:
# amixer Contents

Alsamixer Modifying Linux sound parameters