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End-to-end speech and audio quality evaluation of networks using AQuA - competitive alternative for PESQ (P.862) Endre Domiczi Sevana Oy
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Speech and audio quality matters ,[object Object],[object Object]
End-to-end speech and audio quality is the heart of QoS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Origins of voice and audio quality degradation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Objective voice quality testing model Demand: Accurate measurement of end-to-end voice quality applicable for a wide range of factors as codecs, carriers, networks, etc Speech signal Quality evaluation Quality Score: 5 – Excellent 4 – Good 3 – Fair 2 – Poor 1 - Bad Network
The model should rely on audio perception of a human ear. Consideration of codec influence and loss of packets as well as other metrics received from network signaling are not enough Objective voice quality testing model ,[object Object],[object Object],Reference audio Quality Score %, MOS, PESQ Degraded audio AquA Model Network
Problems with end-to-end evaluation ,[object Object],[object Object],[object Object],[object Object],[object Object]
Problems with end-to-end evaluation ,[object Object],[object Object],[object Object],[object Object]
Problems with end-to-end evaluation ,[object Object],[object Object],[object Object],[object Object]
Problems with end-to-end evaluation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Typical issues ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Solution demanded ,[object Object],[object Object],[object Object],[object Object],[object Object]
Replacement of P.861 by P.862 ,[object Object],[object Object],[object Object],[object Object]
Challenge: replacement of P.862 by AQuA ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Challenge: replacement of P.862 by AQuA There is only one big challenge: AQuA is  not  a recognized ITU standard... …  but is it really a problem?
AQuA Codecs Conformance Test To test codecs quality AQuA is using special test signal in order to achieve the best precision of the estimation. Codec MOS, P.800 AQuA MOS ITU PESQ a-law 4.1 4.18 3.0 µ-law 4.1 4.18 3.0 g.723.6.3 3.9 3.9 2.93 g.723.5.3 3.62 3.65 2.91 gsm.6.10 3.16 3.7 2.87 g.729 3.9 3.85 4.08
AQuA VoIP Conformance Test AQuA doest NOT tend to be like PESQ or other method, AQuA's task is to give objective voice and audio quality perceptual estimation expressed as a predicted MOS score. But another important task of AQuA is.... Reference Degraded Sampling PESQ AquA, % AquA MOS AquA PESQ or105.wav dg105.wav 8000 2.237 54.10 2.32 2.82 or109.wav dg109.wav 8000 3.180 56.15 2.48 2.85 or114.wav dg114.wav 8000 2.147 45.32 1.77 2.68 or129.wav dg129.wav 8000 2.680 33.85 1.48 2.52 or134.wav dg134.wav 8000 2.365 53.18 2.26 2.81 or137.wav dg137.wav 8000 3.670 21.49 1.70 2.19 or145.wav dg145.wav 8000 3.016 27.72 1.54 2.42 or149.wav dg149.wav 8000 2.558 44.80 1.74 2.69 or152.wav dg152.wav 8000 2.768 39.53 1.55 2.61 or154.wav dg154.wav 8000 2.694 24.95 1.60 2.33 or179.wav dg179.wav 8000 1.828 45.65 1.78 2.70
AQuA VoIP Conformance Test (with energy normalization) …  to let you tune your voice and audio quality testing software to the actual conditions of your network, no matter whether it's VoIP, PSTN, GSM, CDMA, UMTS, LTE/4G, TETRA or any combination of those.. AQuA also provides a special type of audio signal (speech model) to obtain most precise estimations of voice quality over networks Reference Degraded Sampling PESQ, ITU P.862 AquA, % AquA MOS AquA PESQ or105.wav dg105.wav 8000 2.237 49.4 2.00 2.76 or109.wav dg109.wav 8000 3.180 56.24 2.49 2.85 or114.wav dg114.wav 8000 2.147 37.55 1.51 2.58 or129.wav dg129.wav 8000 2.680 58.57 2.68 2.87 or134.wav dg134.wav 8000 2.365 48.53 1.94 2.75 or137.wav dg137.wav 8000 3.670 51.21 2.12 2.78 or145.wav dg145.wav 8000 3.016 60.54 2.83 2.88 or149.wav dg149.wav 8000 2.558 51.82 2.16 2.79 or152.wav dg152.wav 8000 2.768 73.55 4.00 2.93 or154.wav dg154.wav 8000 2.694 45.37 1.77 2.70 or179.wav dg179.wav 8000 1.828 50.94 2.10 2.78
AQuA Value Proposition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AQuA Value Proposition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AQuA Non-intrusive ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AQuA Applications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AQuA Benefits ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Contact us Endre Domiczi Email:  [email_address] Phone:  +358 9 23164165 Web: http://www.sevana.fi

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AQuA Voice Quality Testing. Competitive Alternative For Pesq (P 862)

  • 1. End-to-end speech and audio quality evaluation of networks using AQuA - competitive alternative for PESQ (P.862) Endre Domiczi Sevana Oy
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  • 6. Objective voice quality testing model Demand: Accurate measurement of end-to-end voice quality applicable for a wide range of factors as codecs, carriers, networks, etc Speech signal Quality evaluation Quality Score: 5 – Excellent 4 – Good 3 – Fair 2 – Poor 1 - Bad Network
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  • 16. Challenge: replacement of P.862 by AQuA There is only one big challenge: AQuA is not a recognized ITU standard... … but is it really a problem?
  • 17. AQuA Codecs Conformance Test To test codecs quality AQuA is using special test signal in order to achieve the best precision of the estimation. Codec MOS, P.800 AQuA MOS ITU PESQ a-law 4.1 4.18 3.0 µ-law 4.1 4.18 3.0 g.723.6.3 3.9 3.9 2.93 g.723.5.3 3.62 3.65 2.91 gsm.6.10 3.16 3.7 2.87 g.729 3.9 3.85 4.08
  • 18. AQuA VoIP Conformance Test AQuA doest NOT tend to be like PESQ or other method, AQuA's task is to give objective voice and audio quality perceptual estimation expressed as a predicted MOS score. But another important task of AQuA is.... Reference Degraded Sampling PESQ AquA, % AquA MOS AquA PESQ or105.wav dg105.wav 8000 2.237 54.10 2.32 2.82 or109.wav dg109.wav 8000 3.180 56.15 2.48 2.85 or114.wav dg114.wav 8000 2.147 45.32 1.77 2.68 or129.wav dg129.wav 8000 2.680 33.85 1.48 2.52 or134.wav dg134.wav 8000 2.365 53.18 2.26 2.81 or137.wav dg137.wav 8000 3.670 21.49 1.70 2.19 or145.wav dg145.wav 8000 3.016 27.72 1.54 2.42 or149.wav dg149.wav 8000 2.558 44.80 1.74 2.69 or152.wav dg152.wav 8000 2.768 39.53 1.55 2.61 or154.wav dg154.wav 8000 2.694 24.95 1.60 2.33 or179.wav dg179.wav 8000 1.828 45.65 1.78 2.70
  • 19. AQuA VoIP Conformance Test (with energy normalization) … to let you tune your voice and audio quality testing software to the actual conditions of your network, no matter whether it's VoIP, PSTN, GSM, CDMA, UMTS, LTE/4G, TETRA or any combination of those.. AQuA also provides a special type of audio signal (speech model) to obtain most precise estimations of voice quality over networks Reference Degraded Sampling PESQ, ITU P.862 AquA, % AquA MOS AquA PESQ or105.wav dg105.wav 8000 2.237 49.4 2.00 2.76 or109.wav dg109.wav 8000 3.180 56.24 2.49 2.85 or114.wav dg114.wav 8000 2.147 37.55 1.51 2.58 or129.wav dg129.wav 8000 2.680 58.57 2.68 2.87 or134.wav dg134.wav 8000 2.365 48.53 1.94 2.75 or137.wav dg137.wav 8000 3.670 51.21 2.12 2.78 or145.wav dg145.wav 8000 3.016 60.54 2.83 2.88 or149.wav dg149.wav 8000 2.558 51.82 2.16 2.79 or152.wav dg152.wav 8000 2.768 73.55 4.00 2.93 or154.wav dg154.wav 8000 2.694 45.37 1.77 2.70 or179.wav dg179.wav 8000 1.828 50.94 2.10 2.78
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  • 25. Contact us Endre Domiczi Email: [email_address] Phone: +358 9 23164165 Web: http://www.sevana.fi