C-media Cmi8768 User manual

C-Media Electronics Inc.

CMI8768/8768+

Advanced Driver Software Architecture

Enhanced by Dolby

Digital Live and C-Media Xear

Sound Technology

User Manual

Revision: 1.0

Rev. Date: May. 25, 2004

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Notice

The content furnished in this document is C-Media audio product knowledge for

customers’ reference. However, C-Media Inc. assumes no responsibility for the

consequences of use of such information. The information included is subject to

change without notice. This publication supersedes and replaces all information

supplied previously. No part of this manual can be reproduced or transmitted in any

form or by any means for any purpose without the permission of C-Media Electronics

Inc.

Trademarks

C-Media, C-Media logo and Xear 3D are trademarks of C-Media Electronics Inc.

“Dolby”and “Dolby Digital” are trademarks of Dolby Laboratories. EAX and A3D are

trademarks of Creative Technology Ltd. Microsoft, DirectSound3D, Windows are

trademarks of Microsoft Corporation. Other company and product names may be

trademarks of the respective companies with which they are associated.

License

Dolby Digital RTCE driver is manufactured under license from Dolby Laboratories.

C-MEDIA Electronics Inc.

6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan 106 R.O.C.

URL: HTTP://WWW.CMEDIA.COM.TW/

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Revision History

Revision Date Applicable

Driver Version

Description

1.0 2004/5/25 V.040 or revision Preliminary

Chip Version

Product Name Description

CMI8768+ Supports Dolby

Digital Live real-time AC-3 encoder

CMI8768 Doesn’t support Dolby

Digital Live real-time AC-3 encoder

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Table of Content

1. Introduction............................................................... 5

2. Feature Overview ....................................................... 6

3. Installing H/W, S/W, and Speakers ........................... 7

3.1 Audio Hardware ........................................................................................................... 7

3.2 Audio Software............................................................................................................. 7

3.3 Connection and Speaker Setup..................................................................................... 8

4. Using Audio Driver ....................................................11

4.1 Find Out “3D Audio Configuration”.......................................................................... 11

4.2 Main Setting ............................................................................................................... 12

4.3 Mixer/Volume............................................................................................................. 15

4.4 Sound Effects ............................................................................................................. 18

4.5 Magic Voice

and Karaoke ...................................................................................... 19

4.6 Look for Information.................................................................................................. 21

5. Using Play3D Demo ...................................................22

6. Number of Output Channel........................................23

7. FAQ & Trouble Shooting ............................................25

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

1. Introduction

Thanks for choosing C-Media audio solution! The user manual is a guide

for users to understand how to use the new generation Advanced Driver

Software Architecture (ADSA

) for C-Media CMI8768/8768+ chips

Digital Live encoder (AC3) and Xear 3D

sound

technology. C-Media provides a value-added PC audio total solution.

All kinds of applications can get maximum support. With this manual,

users can quickly take advantage of these great features to enjoy

amazing sound effects even better than consumer acoustics.

- Support EAX2.0TM or A3D1.0TM

-Support DS3DTM H/W &S/W

-Magic VoiceTM

-Sensaura®CPL3D engine

-7.1 Virtual SPEAKER SHIFTER

-5.1 Xearphone

-2-Speaker Virtual Theater

-Earphone Plus Personal Theater

-Environment Emulation

-Environment Sizes

-10-Band Equalizer

DVD Movies

Games

Music

(MP3/CD)

ure 1. ADSA

Features for All Applications

-Magic VoiceTM

-Microphone Echo Effect

-Key-Shifting

-Vocal Cancellation

Messenger/

Karaoke/

VOIP

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

2. Feature Overview

The following shows the function overview of the driver. Dolby Digital Live encoder

is only supported by CMI8768+ version.

ADSATM

Driver

(Xear 3DTM) Sensaura®

HRTF 3D

Positional

Audio

Environment

Emulation/Size

Microphone Echo

10-Band Equalizer

Dolby®Digital Live

Encoder

Sound

Effect

Figure 2. ADSA

Xear 3D Driver Function

Dia

ram

7.1 Virtual

SPEAKER

SHIFTER

EAX2.0&1.0&A3D

1.0

Multi

drive 7.1

Microsoft

DirectSound 3D

H/W & S/W

Dolby®

Audio

Key-Shifting

Vocal Cancellation

Magic

VoiceTM

/Karaoke

8768+ Feature!

Magic VoiceTM

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

3. Installing H/W, S/W, and Speakers

3.1 Audio Hardware

The C-Media audio driver is designed to support the following

C-Media audio chips:

1. CMI8768+ (PCI 8ch audio chips with Dolby®Digital Live

encoder)

2. CMI8768 (PCI 8ch audio chips without Dolby®Digital Live

encoder)

PS. The “+” version chips mean Dolby Digital Live encoder is

included.

If you bought a sound card using C-Media PCI audio chip, you

should install your sound card to the PCI slot on your

motherboard when power-off first. After that, you can continue to

install the audio driver/software. If you bought a motherboard or a

system with a C-Media audio chip on board, you don’t have to do

any audio hardware setup.

3.2 Audio Software

Just put the support/driver CD into your CD-ROM/DVD-ROM to

install the C-Media audio driver/software via the installation

program. (Please also refer to the Guide from the product

manufacturer.) If your system use Windows®ME, you have to

install DirectX 9.0 or post version (from the website below) to

support 7.1 channel surround sound normally.

(http://www.microsoft.com/downloads/details.aspx?FamilyID=141d5f9e-07c1-462a-baef-5

eab5c851cf5&displaylang=en)

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

3.3 Connection and Speaker Setup

The following figure shows an example for the port design of a

sound card bracket and also illustrate how to connecting your audio

devices to the sound card. The real design should be in accordance

with the product manufacturer.

Front OUT/Headphone

Side Surround OUT

Back Surround OUT

Center/Subwoofer

S/PDIF OUT

S/PDIF IN

LINE IN

MIC IN

Sound Card Bracket

Front Speakers

Side Surround

Speakers

Back Surround

Speakers

Center/Subwoofer

Speakers

Mini Disc

AV Player

ure 3. Device Connection Samples

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

After connecting your speakers, you should place your 7.1 or 5.1

speakers standing on the pictures below to get best surround sounds.

Dolby Digtial Surround EX and DTS ES 6.1/7.1 soundtracks are

recorded for additional back surround speakers behind the listeners.

As a result, alien creatures in the movie can circle all around you,

fighter planes can fly directly over you, and rain can pour down all

around you more realistically than ever before.

7.1Speakers 5.1Speakers

Dolby®website provides a picture about the positions for 5.1, 6.1, and 7.1 speakers.

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Speaker Setup for Dolby® Digital Live Encoder

If the system manufacturer provides the value-added Dolby Digital Live

Real-Time Content Encoder (only available on CMI8768+), you can generate the

Dolby Digital audio stream for any digital PC sounds (3D Games, WMA, DVD,

MP3, CD, Wave, streaming audio…) on your PC and make use of your hi-fi

home theater to decode and play the perfect sound. Just connect your PC to the

external decoder/AV receiver with a S/PDIF optical fiber or coaxial cable like the

figure below.

ealize Dolb

PC / Media Center at Home

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

4. Using Audio Driver

4.1 Find Out “3D Audio Configuration”

“3D Audio Configuration” is C-Media’s 3D audio control panel with that you

can control all audio configuration. After finishing the installation of the driver

and rebooting the system, you can find the panel from two places:

1.Left-Click the icon in the system tray in the right-bottom of your screen. You

can also click right button of the mouse on it to get an audio-related menu as

follows.

2. Double-click “CMI Audio Config” icon in Windows “Control Panel”.

(Start=>Setting=>Control Panel)

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

4.2 Main Setting

Using Analog Output or Digital S/PDIF-Out

Step 1: Turn on Analog Output and select Speaker Type, or turn on Digital S/PDIF

Output

Step 2: Check the connection is consistent with the audio jack configuration

information

Step 3: Do Speaker Test/3D Sound/Multi-channel Music Demo if you want

Step 4: You can click “Digital Volume” button to fine-tune the volume for each

speaker.

Step 1

Step 2

Step 3

Step 4

On/Of

Speaker

Test

Sound

5.1

Music

Stop

Digital

Volume

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Using Dolby® Digital Live Real-Time Encoder (DDL)

Step 1: Connect the S/PDIF-Out to the external Dolby Digital decoder using

Optical fiber or RCA coaxial cable like the interface indicates. (Especially if

you have hi-fi home theater high-quality 5.1 speakers at home. This

function lets you to make use of both your PC and consumer electronics.

Your Dolby PC can be a multi-media platform in the living room, which is

often called Media Center.)

Step 2: Select Dolby Digital 5.1 Encoding if you have the option and then you will

get high-quality Dolby Digital audio stream output.

PS. When Dolby Digital Live is enabled, analog output will be turned off in case

of interference.

Step 1

Step 2

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Using Xear 3D

-7.1 Virtual Speaker Shifter

Step 1: Select Xear 3D in DSP Mode

Step 2: Click the “7.1 Virtual Speaker Shifter” button.

Step 3: Each virtual speaker represents the specified channel sound. You can move

each virtual speaker to anywhere you want to optimize the sound field when

you are running any application. You can even move the place of the virtual

listener.

Step 4: You can reset the placement, manual shifting, group-rotate, auto-rotate and

increase/decrease the volume of the virtual speakers

Step 1

Step 2

Step 3

Step 4

Volume

Display

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

4.3 Mixer/Volume

Playback Volume

Step 1: Check that the playback devices/sources you want are turned on (in blue

color). You can turn others off (it means to mute them). There might be some

hided sources that cannot be showed in the block. Please click the arrow to

move to the rest items.

Step 2: In general cases, you can adjust “Master Volume Control” knob (just using

the mouse) to change the volume level for all sources.

Step 3: If you want to change the volume for a specific device/source, please

fine-tune the correspondent scroll bar.

Recording Gain

Step 4: Select the recording source you want (one for once). The left picture will

show the related sign for the source you have selected.

Step 5: If you want to change the volume for a specific device/source, please

fine-tune the correspondent scroll bar. In general cases, you don’t have to

make slider higher than half of the scroll bar in case the signal will be scaled

too much and will be distorted.

Step 1

Step 2

Step 3

Step 4

Step 5

Advanced

Setting

Meter

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Advanced Setting

1.Microphone Setting

Step 1: You can click the checkbox to mute the microphone. Normally open.

Step 2: If you feel the mic sound is too quiet, there are +20dB boost option. Click

the checkbox of “Boost” to enable it. It’s nature that you will also get the

background noise louder certainly.

2.S/PDIF-IN Setting

Step 1: Before you connect S/PDIF interface, you should select the connection type:

coaxial cable (RCA connector) or optical cable (TOS-LINK connector). It

depends on whether your product provide both connectors. Even your

system have both, you cannot use both concurrently.

Step 2: The format of some SPDIF signal sources may be inverse, and you will

hear kind of noise. You have an option to reverse the format for normal

reception.

Step 3: “Vaility Check” will assure to neglect the non-PCM audio to avoid the

noise. It requires that the input data follow the specification of IEC60958.

Step 1

Step 2

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Step 4: When you are recording S/PDIF-In audio, you can choose to monitor it

using analog speakers. However, it may stop usual playback function.

Therefore, please remember to keep it unchecked when you don’t need to

monitor.

Step 1

Step 2

Step 3

Step 4

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

4.4 Sound Effects

Environment Emulation

Step 1: Select an “Environment” button for emulation that is implemented by

producing the sound reflection and reverberation

Step 2: You can change the “Environment Size” to Large or Small (pre-setting is

Medium). You will hear the different feeling about the environment space.

10-Band Equalizer

Step 3: Select a pre-set mode for equalizer that is actually frequency response

modeling. There are 12 preset modes such as Bass, Treble, Live, Rock, Jazz,

etc..

Step 4: You can change the gain setting for each band and then give it a name in the

following blank. Click “+” to add your personal setting into the “User

Defined” list. Click “-“ is to delete current setting record.

Step 2

Step 3

Step 4

Step 1

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

4.5 Magic VoiceTM and Karaoke

This function is optional for system manufacturers. You may or may not see the page.

Step 1: Click “On” to turn on the Karaoke function (that button will be blue.)

Step 2: When singing a song, you may need the Voice Echo to make the singing

more euphonious. You can select “Microphone Echo” to get the effect and

adjust the volume of the echo sound to optimize it. When you are talking to

other people over the network like messenger, VOIP, online game

applications, you can also choose Magic Voice

effect in the pull-down

menu to disguise your identification or just for fun. Just select one kind of

the voice type.

(These two features require real-time Microphone recording. You should

suspend other recording application.)

Step 3: You can enable Key-Shifting for the Karaoke VCD or the music to make it

suitable for your voice pitch. The range is -4b to +4#.

Step 4: If the music source includes original singer’s voice, you may try “Vocal

Cancellation” function to cancel it (0~100). But the effect doesn’t always work

well and it depends on the recording method of the source. It’s usually not

needed for Karaoke VCD or CD, which do not have voice inside generally.

Step 1

Step 2

Step 3

Step 4

Reset all setting to default value

http://www.cmedia.com.tw/ , http://www.Xear3D.com/

CMI8768/8768+ Xear 3D Audio Drive

User Manual Rev. 1.

Microphone Echo

Other manuals for CMI8768

This manual suits for next models

Table of contents

Other C-Media Sound Card manuals

C-Media

C-Media CMI8738 User manual

C-Media

C-Media CMI8738 User manual

C-Media

C-Media CMI8738 User manual

C-Media

C-Media CMI8768 User manual

C-Media

C-Media CM 6206 User manual

C-Media

C-Media cm8828 User manual

C-Media

C-Media CMI8738 User manual

C-Media

C-Media CM 6206 User manual

Popular Sound Card manuals by other brands

Audiotrak

Audiotrak AUDIOTRAK MAYA user guide

Digigram

Digigram PCX924HR user manual

Diablotek

Diablotek SCDIA71 user guide

Asus

Asus XONAR D1 - Sound Card - Low Profile user manual

Digigram

Digigram VX442 user manual

Philips

Philips PSC 605 Specifications

Asus

Asus Audio Card Xonar D2 Test guide

Yamaha

Yamaha EtherSound MY16-ES64 Mode d'emploi

Asus

Asus XONAR DX Quick installation guide

Asus

Asus Audio Card Xonar D2 installation guide

Asus

Asus PCI-AS300 user manual

Opengear

Opengear MUX-6258-A-27 user manual

Conrad Electronic

Conrad Electronic USB-SoundBox 7.1 operating instructions

Creative

Creative SB1500 user guide

Mediatrix

Mediatrix Audiotrix Pro user guide

RME Audio

RME Audio TCO HDSP/FF user guide

Asus

Asus XONAR DX user manual

Philips

Philips PSC705/05 user manual