Lenovo ThinkPad X220i (English) User Guide - Page 94
Using an integrated camera, Beam Forming feature, Configuring for sound recording, Start
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• Recording and playback of PCM and WAV files in 16-bit or 24-bit format. • Playback of a WAV file at a sample rate of 44.1KHz to 192 KHz. • Playback of MIDI files through a Wave table synthesizer under Microsoft Windows operating systems. • Playback of MP3 files through the Windows Media Player or a software MP3 player. • Recording from various sound sources, such as a headset attached either to the combo audio jack of your computer or to the microphone jack of the ThinkPad Mini Dock Series 3 or the ThinkPad Mini Dock Plus Series 3. Note: The combo audio jack does not support a conventional microphone. The following table shows which functions of the audio devices attached to the jacks on your computer or docking station are supported. Table 3. Audio feature list Jacks Combo audio jack Headphone jack of the docking station Headset with a 3.5 mm 4-pole plug Headphone and microphone functions supported Only headphone function supported Conventional headphone Conventional microphone Headphone function supported Not supported Headphone function supported Not supported Microphone jack of the docking station Microphone function not supported Not supported Not supported Microphone function supported Beam Forming feature A built-in dual array digital microphone is mounted at the top of the display. Whereas a conventional single-element microphone captures sounds from all around, the built-in dual array digital microphone is designed to capture the sound from an exceptionally limited angle, through the combination of a specialized microphone array with a capability of digital signal processing. Therefore the microphone captures sounds from the area in front of the system clearly, but blocks out almost all the sounds from outside the capturing range. Thus the speech of a user sitting in front of the system is input to the system without interference from noise in the surrounding area. To record your speech most clearly, you should speak directly in front of the computer. Configuring for sound recording To configure the microphone for optimized sound recording, open the SmartAudio window as follows: For Windows 7 and Windows Vista: Click Start ➙ Control Panel ➙ Hardware and Sound ➙ SmartAudio. The SmartAudio window opens. For Windows XP: Click Start ➙ Control Panel. Switch to Classic View and click SmartAudio. The SmartAudio window opens. Using an integrated camera If your computer has an integrated camera, when you press Fn+F6 to open the Communications settings window, the camera will be launched and the green camera-in-use indicator will turn on automatically. In the Communications settings window, you can preview your video image and take a snapshot of your current image. 78 User Guide