Texas Instruments DEM-PCM2912 EVM, User Manual, Page: 29 / 43

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3.3.2 Volume Settings
Basic Operating Set-Up—Mac OS
Follow these steps to configure the volume settings for headphones, microphone, and the recording
options.
To set the headphone volume:
Step 1. Open the Audio MIDI Settings options ( Application
→
Utility
→
Set Audio MIDI ), as illustrated in
Figure 3-14 . Alternatively, open the Output tab of the Sound options, as illustrated in
Figure 3-13 .
Step 2. Set the headphone volume and the audio output levels from –76 dB to 0 dB, and set the
desired mute.
To set the record volume:
1. Open the Audio MIDI Settings options ( Application
→
Utility
→
Set Audio MIDI ), as illustrated in
Figure 3-14 . Alternatively, open the Input tab of the Sound options, as illustrated in Figure 3-12 .
2. Set the recording level from –12 dB to +30 dB, and set the desired mute.
Figure 3-14. Audio Midi Setting Window (Mac OS)
SBAU132 – March 2008 Set-Up Guide 29
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