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Chapter 5 On board Audio
5.1 Audio Features
5.1.1 Special Features
32 bit PCI bus master. Full duplex playback and recording,
built-in 16 bits CODEC.
HRTF 3D positional audio, supports both Direct Sound 3D®
& A3D® interfaces, supports earphones, two and four
channel speakers mode.
Support Windows 3.1 / 95 / 98 and Windows NT 4.0.
MPU-401 Game/Midi port and legacy audio SB16 support.
Downloadable Wave Table Synthesizer, supports Direct
Music®.
5.1.2 Digital Audio (SPDIF IN/OUT)
(SPDIF version only)
Up to 24 bit stereo 44KHz sampling rate voice playback/
recording.
Full duplex playback and recording, 120dB audio quality
measured.
Auto detectable SPDIF/IN signal level from 0.5V to 5V.
5.1.3 Stereo Mixer and FM Music Synthesizer
Stereo analog mixing from CD-Audio, Line-in
Stereo digital mixing from Voice, FM/Wave-table, Digital CD-
Audio
Mono mixing from MIC and software adjustable volume
OPL3 FM synthesizer (4 operators)
Up to 15 melody sounds and 5 rhythm sounds (20 voices)
5.1.4 Game and Midi Interface
Fully compatible with MPU-401 Midi UART and Sound
Blaster Midi mode/ Standard IBM PC joystick/game port
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