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Quantification of audio quality loss after wireless transfer

Hedlund, Frida LU and Jonasson, Ylva LU (2015) EITM01 20151
Department 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.
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author
Hedlund, Frida LU and Jonasson, Ylva LU
supervisor
organization
course
EITM01 20151
year
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},
  keyword      = {Bluetooth link,Mobile phones,Real-life testing,evaluation software,sound quality measurements,objective grading,PESQ,PEAQ,Sound quality},
  language     = {eng},
  note         = {Student Paper},
  title        = {Quantification of audio quality loss after wireless transfer},
  year         = {2015},
}