Quantification of audio quality loss after wireless transfer
(2015) EITM01 20151Department of Electrical and Information Technology
- Abstract
- The report describes a quality measurement for audio, both the theoretical background and implementation. It begins by describing the unlicensed methods the implementation is based on, Segmental SNR, Frequency Weighted Segmental SNR, Log-Likelihood Ratio, Cepstral Distance and Weighted Slope Spectral distance, and the commercial methods used as reference, PEAQ and PESQ. It also mentions the problems present in wireless transfer and the concept of sound quality assessment.
It concludes by describing the suggested analysis method and implemented software together with the results when compared to PEAQ and PESQ. - Popular Abstract
- When talking on the phone, how do you know if the sound quality is good or bad? How do you know if it is better or worse than your last phone call? Although the perception of sound varies from person to person, only humans can truly determine sound quality. However, companies wants to ensure the quality of their product before releasing it, and therefore need an easier way to evaluate without humans, since human testing is expensive, time consuming and cannot be guaranteed to be consistent.
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/7449995
- author
- Hedlund, Frida LU and Jonasson, Ylva LU
- supervisor
- organization
- course
- EITM01 20151
- year
- 2015
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- Bluetooth link, Mobile phones, Real-life testing, evaluation software, sound quality measurements, objective grading, PESQ, PEAQ, Sound quality
- report number
- LU/LTH-EIT 2015-449
- language
- English
- id
- 7449995
- date added to LUP
- 2015-06-30 08:19:26
- date last changed
- 2015-08-18 11:42:47
@misc{7449995, abstract = {{The report describes a quality measurement for audio, both the theoretical background and implementation. It begins by describing the unlicensed methods the implementation is based on, Segmental SNR, Frequency Weighted Segmental SNR, Log-Likelihood Ratio, Cepstral Distance and Weighted Slope Spectral distance, and the commercial methods used as reference, PEAQ and PESQ. It also mentions the problems present in wireless transfer and the concept of sound quality assessment. It concludes by describing the suggested analysis method and implemented software together with the results when compared to PEAQ and PESQ.}}, author = {{Hedlund, Frida and Jonasson, Ylva}}, language = {{eng}}, note = {{Student Paper}}, title = {{Quantification of audio quality loss after wireless transfer}}, year = {{2015}}, }