Texas Instruments DEM-PCM2912A EVM 数据表

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Basic Operating Set-Up—Windows XP

To set the microphone sidetone:

1. Open the Speakers options from the Volume selection box (on the Audio tab) or the Advanced

selection box (on the Volume tab); see

. Alternatively, double-click the speaker icon (if

displayed) in the lower right-hand area of the Windows taskbar (at the bottom of the screen); see

2. Set the volume and the mute levels for the microphone sidetone from –76 dB to 0 dB, as shown in

. The initial volume setting upon installation is approximately –8 dB.

Figure 3-9. Speaker Window for Volume Setting (Windows XP)

To set the record volume:

1. Open the Sound options from the Control Panel. (Start

→

Control Panel

→

Sound)

2. Open the Sound and Audio Devices Properties dialog box and select the Microphone tab, as

illustrates.

Figure 3-10. Sound and Audio Devices Properties—Audio Tab (Windows XP)

SBAU141 – January 2009

Set-Up Guide