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Re: [Linphone-developers] Need Help : Unable to Open Camera in Linphone

From: Alastair Johnson
Subject: Re: [Linphone-developers] Need Help : Unable to Open Camera in Linphone Using MediaStreamer
Date: Tue, 23 Oct 2012 17:21:12 +0100
User-agent: KMail/4.8.5 (Linux/3.4.9-gentoo; KDE/4.8.5; x86_64; ; )

On Tuesday 23 October 2012 19:08:57 saurav maitra wrote:
> Respected Sir,


>  Additionally, the audio call is also accompanied with a lot of noise, and
> we have tried "echo cancellation"  to no avail. If there can be anyway, the
> *noise can be reduced* during the calls.

Exactly what do you mean by noise? Depending on what you mean there could be 
more than one cause, and it may or may not be fixable in software. For example 
the Openmoko had a combination of echo from mechanical transmission between 
speaker and mic, buzz from electrical noise on a power supply line, and often 
clipping from a poorly configured mixer. Distortion from clipping upset the 
echo cancellation, so the mixer had to be set correctly before echo 
cancellation would work properly. The buzz couldn't be fixed without a 
soldering iron though.

> Saurav Maitra
> IIIT-Delhi
> 2008047

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