Features
Hardware Features
High-performance DACs with 97dB SNR (A-Weighting), ADCs with 90dB SNR (A- Weighting)
Meets performance requirements for Microsoft WLP 3.0 Premium desktop and mobile PCs
Ten DAC channels support 16/20/24-bit PCM format for 7.1 sound playback, plus 2 channels of independent stereo sound output (multiple streaming) through the front panel output
Two stereo ADCs support 16/20/24-bit PCM format, one for stereo microphone, one for legacy mixer recording
All DACs supports 44.1k/48k/96k/192kHz sample rate
All ADCs support 44.1k/48k/96k sample rate
16/20/24-bit S/PDIF-OUT supports 44.1k/48k/96k/192kHz sample rate
16/20/24-bit S/PDIF-IN supports 44.1k/48k/96k/192kHz sample rate
Up to four channels of microphone array input are supported for AEC/BF application
High-quality analog differential CD input
Supports external PCBEEP input and built-in digital BEEP generator
Software selectable 2.5V/3.75V VREFOUT
Two jack detection pins each designed to detect up to 4 jacks
Supports legacy analog mixer architecture
Wide range (–80dB ~ +42dB) volume control with 1.5dB resolution of analog to analog mixer gain
Software selectable boost gain (+10/+20/+30dB) for analog microphone input
All analog jacks are stereo input and output re-tasking for analog plug & play
Built-in headphone amplifiers for each re-tasking jack
Two GPIOs (General Purpose Input and Output) for customized applications
Supports anti-pop mode when analog power AVDD is on and digital power is off
Supports digital microphone interface for improved voice quality 48-pin LQFP ‘Green’ package
Software Features

Meets Microsoft WHQL/WLP 3.0 audio requirements
WaveRT-based audio function driver for Windows Vista
EAX™ 1.0 & 2.0 compatible
Direct Sound 3D™ compatible
A3D™ compatible
I3DL2 compatible
HRTF 3D Positional Audio
Emulation of 26 sound environments to enhance gaming experience
10-Band Software Equalizer
Voice Cancellation and Key Shifting in Karaoke mode
Realtek Media Player
Enhanced Configuration Panel to improve user experience
Microphone Acoustic Echo Cancellation (AEC), Noise Suppression (NS), and Beam Forming (BF) technology for voice application
ALC888DD-GR features Dolby® Digital Live and DTS® CONNECT™ software (Optional)
ALC888H-GR features Dolby® Home Theater(software feature)

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