Re: Full Duplex Voice Conversation

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Hi Matthias,

I really appreciate your invaluable support. (I might consider your service
if this goes into a commercial project.) :)

Anyway, I believe my audio mixer settings are correct. I set Microphone to
be selected in recording settings, and I mute the microphone playback
settings (I dislike mic playback).

I am suspecting the echo cancellation on the modem itself is because, I
tried some other modems, and there are some which echo is more critical than
the other one. Have you tested out other modems beside PCTel?

Regards,
Thomas


"Matthias Moetje [MVP]" <moetje@xxxxxxxxxxxxxxxxxxx> wrote in message
news:eY9WtQD9FHA.952@xxxxxxxxxxxxxxxxxxxxxxx
> Thomas,
>
> > > (or in rare cases directly through the computers sound card, but
> > > in this case you cannot record).
>
> Seems you have one of those rare softmodems where the soundcard
> is used for speakerphone functionality (PCTel is one of those).
>
> When we tested with PCTel, speakerphone mode worked through
> soundcard, but we were unable to record while speakerphone was
> active.
>
> Possible reason for echo in your case: What did you set as the recording
> device, microphone or "Stereo Mix" or "What U Hear"? Of course this
> should be set to Microphone (open the Audio Mixer, Options >> Properties
> >> Select Volume for ... >> Recording >> OK >> then select microphone)
>
> There are also other reasons for echo in analog networks. Modems do
> not come with echo cancelling functionality, so a professional voice board
> is always a better choice anyway...
>
> Best regards,
>
> Matthias Moetje
> -------------------------------------
> TERASENS GmbH
> Augustenstraße 24
> 80333 Munich, GERMANY
> -------------------------------------
> Fon: +49 89 143370-0
> Fax: +49 89 143370-22
> e-mail: moetje at terasens dot com
> www: www.terasens.com
> -------------------------------------



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