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

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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.