Know everything about MOS – Part 3: Reference Speech Files

spersyn How-to, In More Depth, Lab

LinkedIn Twitter Facebook Google+ Weibo VKontakte Viadeo Flipboard SkypeSelecting Reference Speech Files In this third episode of “Do you really know everything about MOS” video series, we explain how to select correct reference speech files for POLQA and PESQ voice quality tests. You will also learn how to verify the ITU compliance of the reference speech files you are actually …

VoLTE Quality Assessment

Voice Quality Assessment for VoLTE Devices

spersyn In More Depth, Lab

LinkedIn Twitter Facebook Google+ Weibo VKontakte Viadeo Flipboard SkypeVoLTE device manufacturers’ challenge Modem chipset designers and cellular device manufacturers need to characterize the performance of their products. Not just under ‘ideal’ network conditions, but also in the ‘real world’ of packet loss and jitter. The RTP packet stream from the network to the VoLTE device may be subject to impairments …

POLQA & PESQ – Know everything about MOS – Part 2

spersyn How-to, In More Depth, Lab

LinkedIn Twitter Facebook Google+ Weibo VKontakte Viadeo Flipboard SkypePOLQA or PESQ? In this second episode of “Do you really know everything about MOS?” video series, we explore in more details ITU PESQ and POLQA MOS algorithms and related test methodologies. You will learn what are the limitations for each algorithm, and when to choose PESQ or POLQA (ITU P.863) depending …