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Experimenting with Opus I: PhonerLite

Opus-LogoInspired by my earlier interaction with Mike Phillips I thought it would be interesting to get some hands on experience with Opus. It would be worthwhile staging a little test to better understand the audio path presented in one or more Opus implementations.

A quick Google search revealed that PhonerLite, the freeware Windows soft phone from Germany, includes Opus from the v1.92 release onward. According to the release notes support for Opus replaced support for CELT. The current release is v2.08 from April 16, 2013.

I had first encountered PhonerLite some time ago, when I was seeking a G.722 capable soft phone. It’s very functional but a bit quirky.

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39 Free Soft Phones

Matt Riddell of VentureVoIP is always informative and a great read. This morning I see that he has posted an article listing 39 Free Soft Phones. What a great resource! He goes so far as to only list those that…

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PhonerLite: Codec vs Sample Rate

In the post-roll after last weeks VUC call with Michael Iedema of Askozia Project I took a little time to join the call using the PhonerLite soft phone. I didn’t tell people right away, but some later commented that I sounded like I was back to narrowband (G.711) During the formal portion of the call I was on the bridge using Eyebeam in wideband (G.722)

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