Audio MOS/ Speech Quality

Audio MOS/ Voice Quality

Speech Quality scoring using POLQA (Perceptual Objective Listening Quality Assessment) model to predict speech quality. The predictions of those objective measures should come as close as possible to subjective quality scores as obtained in subjective listening tests.

Product Overview

SmartViser allows you to fully test Audio MOS/ Speech Quality in any technology 2G, 3G, 4G, 5G, VoIP, VoLTE, VoWifi using POLQA algorithm. The Audio MOS solution works on Audio MOS and OTT like Skype, Viber, WhatsApp etc.

It works as an additional option for viSer test engine where user actions like calls can be automatically performed and results are sent to VWS

MOS calculation is provided by Polqa reference algorithm from Opticom company

Replay Recorded audio samples from Viser Studio Analytics

Correlate MOS with other recorded information from viSer like signal strength and quality, handover, location, temperature etc.

The Mean Opinion Score, or MOS as it is widely known, assesses the quality of voice calls using a scale of 1-5 (5 being the highest quality) based on the scientific algorithm POLQA ™.

Score 1 means that despite great effort, it is impossible to understand what is being said during the call (the call repeatedly cuts in and out).
Score 2 means the quality is not good and a lot of effort is needed to understand.
Score 3 indicates an acceptable level of quality and fairly understandable conversation.
Score 4 is a good quality level, understandable with minor interference noise
Score 5 is an excellent quality level, understandable discussion without interference noise.