DSLAIIC6 - 6 Voice Channels

4 and 6 Channel DSLA Now Available

spersyn Company News, New Releases

We are proud to announce the New Four and Six Channel Digital Level Speech Analyser Both versions have the Handset Ports (RJ22), Phone Ports (RJ11), Control Jacks and Monitor Outputs on the front panel. On the rear panel is a Sync Port, a Serial Port and an Ethernet Port for each channel pair. Like the Two Channel DSLA, the Four and Six …

HD Voice

HD Voice

spersyn How-to, Lab

What 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 of un-voiced sounds such as “ss” “f” “sh”. …

Testing iPhone Voice Quality with MultiDSLA

spersyn How-to, Lab

For 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 assume that you have an understanding of how …

Comdate appointed as Distributor in Australia

spersyn Company News

Comdate Pty Ltd have been appointed as Distributor in Australia. Established in 2003, Comdate supplies a wide range of  Telecommunications and IT Test Equipment. Their test automation experience will be particularly useful in enabling our speech quality measurement systems to operate in conjunction with other equipments.  www.comdate.com.au

polqa logo

POLQA Gets the Timing Right

spersyn In More Depth

The time alignment algorithm in POLQA was designed to be much better than that in PESQ. This example comes from a G.711 connection through an ATA in a test lab. There are no audible impairments but why is POLQA narrowband (NB) showing a score of 4.18 compared to the PESQ P.862.1 score of 3.58? Looking at our PESQ 2D view, it is …