Making measurements of the effects of step changes in parameters is much easier in MultiDSLA version 5.
Testing Push-to-Talk (PTT) and PPT over Cellular (PoC) parameters is straightforward with MultiDSLA.
LinkedIn Twitter Facebook Google+ Weibo VKontakte Viadeo Flipboard SkypeWhat is HD Voice? HD Voice is short for High-Definition Voice, and is also called Wideband. In Internet and mobile telephony, it refers to the use of Wideband technology to provide a deeper clarity and better audio experience during a telephone call. The higher frequencies transmitted in Wideband make for easier recognition …
LinkedIn Twitter Facebook Google+ Weibo VKontakte Viadeo Flipboard SkypeFor about a year, you have been able to automate Android smartphone voice-band performance testing with our custom app. This app is installed on the Android phone. Once installed, MultiDSLA software can make the phone place and answer phone calls automatically. Now we have an app developed for the iPhone. Note: we …
Testing IVR performance for speech quality and prompt accuracy can be performed by a MultiDSLA system.
MultiDSLA and Anritsu MD8475A make speech quality measurements easy on VoLTE phones.
Understand how POLQA time aligns signals before analysing surface views. POLQA and PESQ align reference and degraded signals in time using rather different philosophies. Read more before you start analysing results in detail. If you’ve been using PESQ for years, you may be confused.
Expect reporting of small delay variations which are not actually there. POLQA has a sophisticated time-alignment algorithm to account for both step-delay changes and time-warping. Read this article to avoid being confused when POLQA reports small delay variations on a perfect network.
Ensure POLQA reference files pass the transparency test. Here we explain the hows and the whys of checking that your reference speech material is appropriate for POLQA testing. Read this article to avoid running hours of worthless testing because your reference speech files were not good enough.
Don’t use more than 10s of speech in narrowband mode. For long recordings of, say, 32 seconds POLQA can show a drop in score of around 1.1 compared to the average of four 8s measurements.