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Re: [Linphone-users] Speex and 1015 in an ARM platform

From: Eduardo Bezerra
Subject: Re: [Linphone-users] Speex and 1015 in an ARM platform
Date: Wed, 14 Sep 2005 10:36:16 -0400


Yes, it happens only with speex and lpc1015. I was wondering if 
these problems are related with float point operations. 

I tried compiling libspeex with --enable-fixed-point configure option,
but I could hear only some peace of my voice in the test_speex
program, as I reported in previous messages. Enabling this
configure option is not sufficient for me. I need more optimizations
if I want to use speex. 

The lpc1015 encoder makes a expensive float-point operation 
(read_16bit_samples). I think  the lpc10-1.5 directory has a lot of float point 
operation. Is there any easy way to change them to fixed point??

2005/9/14, Simon Morlat <address@hidden>:
> >
> > I have exactly the same problem with my AU1100 MIPS board! (see the
> > thread "Alsa makes no noise")
> Does it happens only with speex or lpc1015 ?
> Not sure those two problems are related.
> > You can try setting the channel variable in mediastreamer/alsasound.c
> > manually to 2. Then you'll probably hear something though it will be
> > very strange. Try to log the output of /proc/asound/card0/pcm0p/sub0/*
> > while doing a call. I assume you'll get contineous XRUNs like I got.
> >
> > If someone could arrange it to look at these facts I'd appreciate that
> > much.
> >
> > Regards
> > - Marcel Karras

Eduardo Bezerra Valentin
Bacharelado em Ciência da Computação - DCC - UFAM
Laboratório de VoIP - GRSD - UFAM

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