CM101S+ C-Media Electronics, Inc., CM101S+ Datasheet - Page 13

• Manufacturer Part Number: CM101S+
• Description: USB 2CH Audio Controller
• Manufacturer: C-Media Electronics, Inc.

C-Media Xear 3D™ Sound Solution provides another state-of-the-art high quality audio
function--Dolby Digital Live module. With this real-time software AC-3 encoder, the existing and
future customers who are using C-Media USB audio solution and devices can obtain this digital
quality audio output by S/PDIF format much easier than before. This function can output various
3D and environmental sound effects by high quality AC-3 encoding; in the meantime, it exhibits
supreme efficiency—it takes only 7% of CPU consumption from a Pentium 4 Processor.
Better yet, the pure digital signal not only prevents the audio signal from distortion, but also
reduces the number of wires connected between PC and a HI-FI audio system. That is to say,
this breakthrough real-time AC-3 encoder can digitally transmit data from PC to HI-FI system via
a single RCA cable, instead of three pairs in an analog signal case in the past.
Date: 09/25/2005
1.Getting higher quality audio signal output compared with any other SPDIF-Out solutions.
Advantages of this feature：
2.General PC audio SPDIF-Out solution can only provide 2CH PCM data to external amplifier.
C-Media Xear 3D™ Plus Dolby Digltal Live encoder sound solution can directly process and
transmit any PC sound source to digital AC-3 signal. Digital-transmitted data processed by
software driver can absolutely rule out the characteristics influence of DAC quality. Therefore,
users are able to get the best sound quality.
If users want to output high quality digital AC-3 bit-stream, they have to rely on software DVD
6.2 DOLBY DIGITAL LIVE TECHNOLOGY
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USB Audio With Dolby Digital Live Solution
Version: 1.01
CM101S+