**Exhibit21.1**

**SUBSIDIARIES OF DTS, INC.AS OF DECEMBER 31, 2006**
| ** **                                              | ** ** | **JURISDICTION OF  INCORPORATION OR  ORGANIZATION** | ** ** |
|---------------------------------------------------------|------------|---------------------------------------------------------------|------------|
| SUBSIDIARIES OF DTS,  INC.:                             |       |                                                          |       |
|                                                    |       |                                                          |       |
| Digital Theater  Systems (UK) Limited                   |       | United  Kingdom                                               |       |
|                                                    |       |                                                          |       |
| DTS (BVI)  Limited                                      |       | British  Virgin Islands                                       |       |
|                                                    |       |                                                          |       |
| DTS Canada  Holdings, Inc.                              |       | Delaware                                                      |       |
|                                                    |       |                                                          |       |
| dts Japan KK                                            |       | Japan                                                         |       |
|                                                    |       |                                                          |       |
| International  Cinema Services, Inc.                    |       | Delaware                                                      |       |
|                                                    |       |                                                          |       |
| DTS AZ Research,  LLC                                   |       | Delaware                                                      |       |
|                                                    |       |                                                          |       |
| DTS Digital  Images, Inc.                               |       | California                                                    |       |
|                                                    |       |                                                          |       |
| SUBSIDIARIES OF DTS  (BVI) LIMITED:                     |       |                                                          |       |
|                                                    |       |                                                          |       |
| DTS (ASIA)  Limited                                     |       | Hong  Kong                                                    |       |
|                                                    |       |                                                          |       |
| DTS China  Holding Limited                              |       | British  Virgin Islands                                       |       |
|                                                    |       |                                                          |       |
| DTS (BVI) AZ  Research Limited                          |       | British  Virgin Islands                                       |       |
|                                                    |       |                                                          |       |
| DTS Licensing  Limited                                  |       | Republic  of Ireland                                          |       |
|                                                    |       |                                                          |       |
| SUBSIDIARY OF DTS CHINA  HOLDING LIMITED:               |       |                                                          |       |
|                                                    |       |                                                          |       |
| DTS China  Licensing (Hong Kong) Limited                |       | Hong  Kong                                                    |       |
|                                                    |       |                                                          |       |
| SUBSIDIARY OF DTS CHINA  LICENSING (HONG KONG) LIMITED: |       |                                                          |       |
|                                                    |       |                                                          |       |
| Guangzhou DTS  Digital Theater System, Co. Ltd.         |       | People’s  Republic of China                              |       |
|                                                    |       |                                                          |       |
| SUBSIDIARY OF DTS  CANADA HOLDINGS, INC.:               |       |                                                          |       |
|                                                    |       |                                                          |       |
| DTS Canada ULC                                          |       | Canada                                                        |       |
|                                                    |       |                                                          |       |
| SUBSIDIARY OF  INTERNATIONAL SERVICES, Inc.:            |       |                                                          |       |
|                                                    |       |                                                          |       |
| DTS Italia Sr.l.                                        |       | Italy                                                         |       |
|                                                    |       |                                                          |       |
| DTS France S.A.R.L.                                     |       | France                                                        |       |

 

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