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The listening test you are about to take is part of the master thesis of Yunfei Zhu, thanks for your interest in participating in the listening test. The overall test will roughly take 10 minutes. Please take the time and carefully rate every item.

In this test you will be asked to rate the speech quality improvement of testing audios to reference ones. The aspects of voice improvement include voice clarity and noise reduction, scaled as the following table shown.

Speech quality improvement Description
Much better Very clear voice, much lower noice
better Fairly clear voice, lower noice
Slightly better Slightly clear voice, slightly lower noice
Equal Same voice, same noise
Worse Unclear voice, slightly annoying

Instructions:
  • Please use headphones or earphones in a quite environment for the better experience.
  • Please listen reference file at first, then the test file every time in one test set.
  • Please rate each test audio only compared to the reference on top.


Thank you very much!

We are sorry, but the following error occured during your submission:

Please submit the results to our server. Entering a name or email address is not mandatory but it would help us to contact you if we have further questions. You can also leave a comment.

Please download the results and send them to yunfei.zhu@tuhh.de. Entering a name or email address is not mandatory but it would help us to contact you if we have further questions.

Name:
Email:
Are you fluent in English?
Yes
No
Which audio equipment did you use?
Headphones
Earphones
Speaker
Have you heard about audio signal processing?:
Basic use
Regular use
Never heard about

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