7EnglishAudioThe computer also comes with 32-bit High Definition (HD) Audio, and stereospeakers.Acer PureZone (only for certain models)The system provides you whole new enthusiastic audio experience includingAcer PureZone with built-in stereo microphones featuring beam forming andecho cancellation technologies. Acer PureZone technology supports AcousticEcho Cancellation, Beam Forming and Noise Suppression for pure soundrecording. To set up your microphone, run the Acer HD Audio Manager bydouble-clicking the Acer HD Audio Manager icon in the system tray of yourWindows system. The Acer HD Audio Manager dialog box will pop up. Click theMicrophone tab, and then click the Microphone Effects tab. Select BeamForming and Acoustic Echo Canellation to set the microphone effect.Note: Disable the beam forming to get the multi-sound sourceinput.Tuba (only for certain models)The dedicated Tuba CineBass subwoofer pumps out earthshaking movie-houseaudio. The innovative design integrates the subwoofer with the tube-stylehinge.Using Dolby Home Theater for surround/multi-channel sound (only for certain models)Your Acer notebook comes with the Dolby Home Theater ® audio enhancementfeaturing Dolby Pro Logic IIx, Dolby Digital Live, Dolby Headphone, DolbyNatural Bass and Dolby Sound Space Expander,Audio Optimization, HighFrequency Enhancer technologies to give you high-quality digital surroundsound for enjoying movies, games and music in a realistic, multi-channel audioenvironment.Dolby Pro Logic IIxDolby Pro Logic IIx creates a vivid 5.1-channel surround sound experience fromany stereo (two-channel) movie, music, TV, or game audio source. Dolby ProLogic IIx examines the signal and uses that information to expand audio into upto 5.1 channels of highly realistic, natural surround sound.