EXHIBIT 21.1 SONICBLUE INCORPORATED SIGNIFICANT SUBSIDIARIES OF REGISTRANT Name Jurisdiction of Incorporation - ---- ----------------------------- Diamond Multimedia Systems, Inc. Delaware frontpath, inc. Delaware S3 International Limited Bermuda S3 Europe Limited United Kingdom S3 Japan K.K. Japan S3 Asia Pacific Limited Hong Kong S3 Singapore Pte Ltd Singapore Empeg Limited United Kingdom ReplayTV, Inc. Delaware Sensory Science Corporation Delaware S3-VIA, Inc. Cayman Islands S3 Graphics Co., Ltd. Cayman Islands SONICblue owns 50.1% of the voting stock of S3-VIA, Inc., and 50% of the voting stock of S3 Graphics Co., Ltd. All other subsidiaries are wholly owned.