[Project] Measuring a listener's tolerance to the quality of audio files

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livesensus
Posts: 1
Joined: Tue Jul 21, 2020 2:21 pm

[Project] Measuring a listener's tolerance to the quality of audio files

Post by livesensus »

I am working with LiveSensus, a team comprised of 5 Computer Science and Computer Engineering students at the University of Illinois at Urbana-Champaign. LiveSensus is working on a project that measures a listener's tolerance to different audio issues that may come up during live streams, video conferencing call, and online lectures.

LiveSensus has created a machine learning program where users can rate audio clips based on their perception of the quality. At this point, the website is launched and we are seeking respondents interested in testing out our easy 5 minute demo. All data will remain confidential and anonymity will be ensured.

We've been really excited to get this project up and running in a Covid-19 world where many workers, students, etc., are transitioning to online alternatives. Please feel free to contact us with any questions and most of all any comments for improvement. Any insights would go a really long way!

You can access our website at: livesensus.com/

and the demo directly at: livesensus.com/survey.html

Has anyone tried or heard of anyone taking on a similar project?
TPT
Posts: 992
Joined: Mon Dec 03, 2007 3:18 pm
Location: St. Marys, WV

Re: [Project] Measuring a listener's tolerance to the quality of audio files

Post by TPT »

Perception of audio quality can depend on what the listener is using to hear the audio.

Go back 50 years. Most people would find audio quality on a typical telephone handset as acceptable. But the same audio pulled off the line with a hybrid & broadcast on an FM station would be perceived as "thin" and "distorted."

Typical telephone line (before dial-up modems) was filtered in the central office to eliminate low frequencies, emphasize mid-range for intelligibility, and rolled off high frequencies to cut-back cross-talk into other pairs. The earpiece in the hand-set was molded to restore some low frequency components. Besides--was just against the ear.

Use the same kind of hybrid transformer as in a telephone set, add a touch of amplification, then broadcast over an FM transmitter...
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