Realtek HD Sound
Sound mixer
the playback knob and slider at the top controls master volume output.
the record knob controls the microphone and stereo mix volume output.
,mic boost is the 2 .. by mic slider on playback.
,to play music take the red X off Stereo mix , and adjust your mic on the recording slider
ckick the ( mixer toolbox icon ) to select the volume controls you want to see on recording and playback list.
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Click the Multi-streaming setting audio button. The dialog box opens. and lets you select front or rear microphone
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were you select number of speakers you have
When you click the Audio I/O tab, a window opens that allows you to select the number of speakers,2/2.1 is for 2 speaker setup, and shows whether the plugs are analog or digital. .
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When you click the Microphone tab, a window opens that allows fine control over the microphone/recording quality. The Microphone window includes buttons for noise suppression and acoustic echo cancellation.