This article details the necessary system configuration to support microphones connected to the system via USB bus. Laptops commonly include microphones as part of the integrated webcam hardware. Also many USB headsets include a microphone for audio input as well.
The USB audio kernel symbol must be enabled for the USB microphones to work properly. This is the case for most laptops since their microphones are connected on the USB bus.
Device Drivers --> Sound card support --> Advanced Linux Sound Architecture --> USB sound devices --> <*> USB Audio/MIDI driver
Many desktop suites include a dedicated application for which to test the functionality webcam and/or voice recording software. Systems running the Gnome desktop environment can utilize the media-video/cheese application.
- Kernel — the core of the operating system.