Non-intrusive single-ended speech quality assessment in VoIP
Greetings to all Sevana blog followers!
Today we start a set of posts related to the so called non-intrusive (no need for a reference file) single-ended speech/voice qualiy assessment, and our main target will be to explain more about how this can be done in VoIP networks. As old followers know we have intrusive (PESQ-like) voice and audio quality anlysis tool AQuA that already has several happy customers, but in March 2010 we have released for evaluation Sevana NIQA – a non-intrusive voice quality testing software that we particulary target at VoIP. Our goal is to provide VoIP community (and in particular Asterisk users) with a full set of voice quality assessment tools: intrusive and non-intrusive, and today we are going to saysome words ot the latter one.
We would dare to think that integration of commercial and enterprise voice services into packet-switched networks significanlty cuts costs and brings value. Most likely there won’t be any objections here… However, customer expectations of service quality are always the key issue of any voice service and the only way to win and retain customers is to make sure the quality of service meets customers’ expectations. Customers of any voice service are used to the quality of circuit-switched networks.
When integrated into packet-switched networks voice services QoS sustainability requires much more attention:
- Control packet loss, jitter and delay in complex network solutions
- Minimize quality impairments for vocoders, VAD, jitter buffers, echo cancellers and other signal processing involved
At this point one should realize that it’s essential to have knowledge of service quality delivered to the customers, don’t you think so? If you do, the we meet in the next post related to the subject of “What is voice quality?”. Stay in touch!
Click here to request Sevana NIQA evaluation
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