Speex dev - Aug 2004 - embedded speex

Hello Cesar

I'm using Speex on a PPC2002 and PPC2003 with no problems. For tune-up
remember to define the FIXED_POINT macro in Project->Settings in eVC. With
this setting you ought to be able to at least decode in realtime while using
debug-mode.

Kind regards

Bjoern D. Rasmussen
>From: "cesarbremer@raseac.com.br"
<cesarbremer@raseac.com.br>
>To: speex-dev@xiph.org
>Subject: [Speex-dev] Speex in a PocketPc crashes sometimes.
>Date: Tue, 22 Jun 2004 23:21:16 -0300
>
>I'm trying to port the speex codec (version 1.1.5) to my product (Raseac
>Secure Phone), the platform is PocketPc 2002 (and 2003), and i am using the
>Microsoft Embedded Visual C++, i compiled the Speex, ported it to my
>application and i noted that this codec is unstable, crashing my system
>sometimes. The problem is in the recepton module (decoding the voice).
>My initial test is made using a cellular line to send voice. In this
>environment the cellular line lost some voice packets, and i think the
>decoder could have problems in this situation.
>My question is, the speex decoder are being tested with this kind of
>situation? My environment do not allow to debug the speex because the codec
>with the debugging information is too slow to be used in a realtime
>situation, and i think that debugging some voice sample with windows
>directly and supressing some voice packets from this voice sample could
>bring some light to this possible decoder problem.
>I don't know if the speex is being used in the pocketpc environmet and i
>would like some help, may be some tunning be required?
>
>Thank you.
>
>Cesar Bremer Pinheiro
>cesarbremer@raseac[remove].com.br
>
>Please erase the "[remove]" from e-mail.
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Hello all;

Is there a reference implementation of a microcontroller encoding? And will
speex encoding from a 10 bit a/d be of good quality? I use the TI MSP430 and
the PIC dsPIC microcontrollers and would like to be able to record audio and
forward it over the UART.

Thx.
Rob

Hi,

I doubt a microcontroller is powerful enough to encode using Speex in
real-time. I think the minimum requirement for Speex encoding is an ARM
that would be clocked around 100 MHz. If your microcontroller is fast
enough, then the fixed-point port of Speex would probably work.

Jean-Marc

Le mer 23/06/2004 ? 11:56, Rob Roy a ?crit :
> Hello all;
>
>  Is there a reference implementation of a microcontroller encoding? And
will
> speex encoding from a 10 bit a/d be of good quality? I use the TI MSP430
and
> the PIC dsPIC microcontrollers and would like to be able to record audio
and
> forward it over the UART.
>
> Thx.
> Rob
>
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> Speex-dev mailing list
> Speex-dev@xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
--
Jean-Marc Valin
http://www.xiph.org/~jm/
LABORIUS
Universit? de Sherbrooke, Qu?bec, Canada