Samsung Q1 用户手册

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页码 153
Voice Recorder   98
When unable to make a recording using the built-in microphone
Click the SETTING button and check if the Recording device is set to SoundMAX HD Audio 
I
, and the Input Source is set to Microphone. If the setting is not done properly, you will not 
be able to make a proper recording.
For more detailed usage, click the Help button.