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Re: [Linphone-users] [SOLVED] Linphonec echo cancellation on a BeagleBoa

From: Federico Lorenzi
Subject: Re: [Linphone-users] [SOLVED] Linphonec echo cancellation on a BeagleBoard - extremely high CPU use.
Date: Tue, 21 Dec 2010 16:48:16 +0200

Now - a call using Ulaw shows about 20% usage in top with echo
cancellation. This is on a BeagleBoard rev C.

On Tue, Dec 21, 2010 at 4:28 PM, Dragos D <address@hidden> wrote:
> So how much of the processor is used now?
> On Dec 21, 2010 6:26 AM, "Federico Lorenzi" <address@hidden> wrote:
>> Sorry for the noise - looks like I fixed my own problem here.
>> Recompiling Speex with --disable-float-api and --enable-fixed-point
>> seems to have gotten everything working at good speed. Seems like the
>> Ubuntu ARM package isn't compiled specially.
>> On Tue, Dec 21, 2010 at 11:09 AM, Federico Lorenzi <address@hidden>
>> wrote:
>>> Hi everyone,
>>> I'm running Ubuntu 10.10 on a BeagleBoard with the Linphone package
>>> installed (3.3.2).
>>> Calls work without the echo canceller, but are obviously quite echo-y.
>>> The system is set up as a speakerphone essentially, and if I
>>> understand correctly, this is one of the exact situations an acoustic
>>> echo canceller is designed to help with. (As opposed to far end echo,
>>> etc.)
>>> I've tried various different numbers for the "ec on" parameters, but
>>> no matter what I try (including numbers found at
>>> CPU usage goes extremely high, and the call becomes choppy. Linphonec
>>> is shown using all of the CPU in top.
>>> If it counts for anything I'm using Ulaw and it's registered to an
>>> Asterisk box.
>>> Cheers,
>>> Federico
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