Idefisk 2.0 (Zoiper) Sprachqualität ?

[MET]

Habe mit dem Client via Asteriskguru einen Echotest gemacht. Hatte da den Eindruck, als ob einzelne kleine Sprachpakete nicht durchkommen und kleine Wortteile abgeschnitten werden. Bei einem gleichen Test mit dem iaxComm meine ich dass dies nicht auftrat. Hat noch jemand anderer hier diesen Client ausprobiert und was sind die Erfahrungen mit der Sprachqualität?

 

[joachim9]

Hello,

I'm working for Attractel, the company producing Zoiper.
Zoiper is using a lot of algorithms to improve the audio quality, however some of those algorithms, such as our echo cancellation do not like the echo test, and will freak out on it. This is normal behaviour. (The echo test should not be used in combination with the accoustic echo canceller).

So in short, the quality you will get on the echo test with the echo canceller enabled will not nearly be as good as the quality you will get on a real test call.

(As artifacts are generated when the echo canceller freaks out on the echo from the echo test.).

---

Hallo,

Ich arbeite fuer Attractel, die Firma, die Zoiper entwickelt.
Zoiper nutzt viele Algorithmus um die Audioqualitaet zu verbessern,aber einige von dieser zum Beispiel unsere Echounterdrueckung möchte den Echotest nicht und flippt aus. Das is normal. (der Echotest sollte nicht im Verbindung mit dem akustischen Echokompensator benutzt werden).


So kurz gesagt, ist die Qualität, die Sie auf dem Echotest mit dem Echokompensator erhalten, der ermöglicht wird, nicht fast so gut, wie die Qualität, die Sie bei einem realen Testanruf erhalten.

(als artifacts werden entwickelt, wenn die Echokompensator flippt beim Echo vom Echotest aus).

 

[MET]

Hello Joachim9 and welcome in the forum!

Some time ago you recommended me that disabling the echo compensation in Zoiper could possibly help to improve the voice problem I'm noticing on my side. Unfortuantely it didn't. I testet that not only via your server but also with real calls on my mobile phone. With your previous softphone Idefisk 1.37 I don't notice this problem. Voice quality is definitely better. However, it could well be that this voice quality problem which I have when using Zoiper is limited to the installation on my computer and that other users don't face it. In order to find this out I started some time ago the above thread.

Regards Marcel

P.S: If this is of further interest to you, I would be pleased to show it to you with a real phone call. Please contact me in this case via PM or e-mail (you possibly still have my address somewhere).

 

[joachim9]

Can you contact me again on [email protected] ?
Did you try running version 2.07 yet ?

We do a lot of compensation for all kinds of problems with audio devices. (Which is why zoiper will sound better than the old idefisk on 99% of all audio cards).

However, to achieve this we also open the audio card in a different rate, which might cause the problem in your case.

If you contact us, we will send you some debugging versions to give us more insight in what exactly is the problem

So far you are the first person to say the old idefisk was better for you since the zoiper release 2.07, (> 10.000 downloaded it so far , but of course we want to also make it better for you too!

Sorry about all the english, if i need to ask somebody in the office to translate it first, it will take me a lot more time

Cheers,

Zoa

 

[MET]

Can you contact me again on [email protected] ?
Did you try running version 2.07 yet ?

Ok, will contact you later on directly. I didn't test all of the Zoipe versions, but I gave the latest (2.07) a try ... and - after testing - switched again back to Idefisk.

Again, I asked here whether others have the same problem in order to find out if the problem is related to my set-up or the client. I know that it actually might be related with my computer. I have with an other softphone a simmilar problem. The old version has a loud and clear voice and the new version only a very low one. Updating Realtek AC97 didn't help.

Since there is a good chance that also the problem with Zoiper is related to my computer, I didn't bother further. Since the older versions work fine, I kept continuing using those.

Regards Marcel

 

[MET]

Bin endlich dazugekommen wieder einmal Zoiper zu testen. Inzwischen ist es die Version 2.11. Das hier angesprochene Problem der Sprachqualität scheint nicht mehr zu bestehen. Die gemachten Tests waren (fast) alle ok. Das 'fast' bezieht sich auf Tests mit dem Mobiltelefon. Wie ich erst jetzt bemerkte, kann anscheinend das Mobiltelefon die Voip-Verbindung am Computer stören; ich weiss jedoch nicht wie und bin dem auch nicht mehr weiter nachgegangen. Möglicherweise stört das Mobiltelefon die drahtlose Verbindung zwischen Computer und Router.