- Dolby International AB
- Electronics and Telecommunications Research Institute (ETRI)
- Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung, e.V.
- Koninklijke Philips N.V.
- Nippon Telegraph and Telephone Corporation
- NTT DOCOMO, INC.
- Orange SA
- Panasonic Holdings Corporation
- Samsung Electronics Co., Ltd.
- Sony Group Corporation
- VoiceAge Corporation
- Wilus Inc.