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Re: [Linphone-users] [help!][resent] a terrible howling echo when both l


From: Dragos D
Subject: Re: [Linphone-users] [help!][resent] a terrible howling echo when both linphone-android UA is in speaker mode
Date: Sun, 4 Mar 2012 14:00:31 -0500

You may try:
ec_tail_len=200 or even 300
D

2012/3/4 Coca <address@hidden>:
> Dear all,
>
> Sorry for sending this again since I really need some hint!
>
> I noticed in many android phones (we tested it with at least 50+ types of
> android)
>  a terrible howling echo when both linphone-android UA is in speaker mode or
> in video chat (speaker mode of course).
> This only happen when both of them are in speaker mode.
>
> Any idea how to tube this issue?
> I saw some ec related parameter in linphonerc file but no idea what they
> means.
>
> ec_tail_len=120
> ec_framesize=128
>
> el_type=mic
> el_thres=0.03
> el_force=100000
> el_sustain=400
> el_transmit_thres=1.7
> ng_floorgain=0.01
>
>
>
> Thank you!
>
> Coca
>
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