Dirac Research specializes digital sound optimization and our solutions are used in smartphones, headphones, cars, mixing studios and cinemas for enhanced sound quality and improved listening experiences.

As a volunteer of this study, you will join a listening test that lasts 30 minutes at Dirac's office on the third floor at Vaksalagatan 16, Uppsala. During the test, you will be asked to listen to music with a pair of headphones on a computer using our digital sound optimization technology and tell us your opinion about the sound quality.  You will receive 2 cinema tickets as a gift when the study is complete. You can, at any time, end your participation. You are required to keep the study content, process, methods, and results confidential.

Dirac will collect your feedback and use it to improve our technology. Your feedback will be kept anonymous. Your name, email and telephone number are collected prior to the study to facilitate the booking only. Dirac will not retain or use any of your personal data or information, such as name, email, telephone number, etc when the study is complete without your approval. Click here to learn more about Dirac’s privacy policy.

Any feedback provided by volunteers is provided on a voluntary basis. Volunteers understand and agree that Dirac is permitted to make unlimited use of any such feedback without having to obtain any permission from any volunteer and without having to make any accounting to any volunteer.