Le mercredi 19 juillet 2006 ? 20:05 +0800, Janus.Wang@QMITW.COM a
?crit :> Hi Jean-Marc,
> Please read the attachment file for Marvell 8618 datasheet for your
reference,
Too much is like not enough. Care to summarize? (speed, arch level, ...)
> BTW, Could you mind to specify the voice computing power for Speex codec?
> 1. Sample Rate 8K / Bit Rate - 2.15K ~ 24.6Kbps ( NarrowBand)
The CPU requirements can vary a lot as a function of bit-rate. 6 kbps
can be done on a ~80 MHz 7tdmi, while 18.2 kbps requires at least 2x
that.
> 2. Sample Rate 16K/ Bit Rate - 2.15K ~ 24.6K bps ( NarrowBand)
Nonsense. Please read the manual
> 3. Sample Rate 8K / Bit Rate - 4~44.2Kbps ( WideBand)
Nonsense. Please read the manual.
Jean-Marc
>
> Best Regards
>
> Janus ( Freedom )
> System Engineering / PLM
> Quanta Microsystems, Inc.
> TEL : +886 (3) 571-5996 # 5217
> Mobile : +886 0953-499071
> Mail : janus.wang@qmitw.com
> MSN : freedom_janus@hotmail.com
> SKYPE : freedom_janus
>
>
> -----Original Message-----
> From: Jean-Marc Valin [mailto:Jean-Marc.Valin@USherbrooke.ca]
> Sent: Wednesday, July 19, 2006 7:09 PM
> To: Janus Wang(???)
> Cc: speex-dev@xiph.org
> Subject: RE: [Speex-dev] Speex Codec Question
>
> Le mercredi 19 juillet 2006 ? 18:42 +0800, Janus.Wang@QMITW.COM a
> ?crit :
> > Hi Jean-Marc,
> > We already decided to use Marvell's 88F8618 platform,
>
> No clue what that chip is.
>
> > But I have few questions to you and listed it below,
> >
> > Q1, Can we implement the Speex Codec on Marvell 8618 for non-HW DSP of
platform?
>
> Care to give the specs?
>
> > Q2, Based on ARM9 CPU core, do you have any information to let me
estimation the voice computing power for Speex codec?
>
> What sampling rate, what bit-rate?
>
> Jean-Marc
>
> > Sorry to bother your job again....
> >
> > Best Regards
> >
> > Janus ( Freedom )
> > System Engineering / PLM
> > Quanta Microsystems, Inc.
> > TEL : +886 (3) 571-5996 # 5217
> > Mobile : +886 0953-499071
> > Mail : janus.wang@qmitw.com
> > MSN : freedom_janus@hotmail.com
> > SKYPE : freedom_janus
> >
> >
> > -----Original Message-----
> > From: Jean-Marc Valin [mailto:Jean-Marc.Valin@USherbrooke.ca]
> > Sent: Saturday, June 03, 2006 7:40 PM
> > To: Janus Wang(???)
> > Cc: speex-dev@xiph.org
> > Subject: Re: [Speex-dev] Speex Codec Question
> >
> >
> > > Q1, how much of MIPS we need to reserve the system computing
power for
> > > Speex Codec needed?
> >
> > It greatly depends on your chip. Some numbers I've had on the
latest
> > version (svn) are about 30 MIPS on ADI Blackfin and about 40 MIPS for
TI
> > C55x and C6x DSPs. That's at 15 kbps narrowband, complexity 1.
Other
> > settings will change the complexity.
> >
> > > Q2, do we need to use the voice DSP for Speex Codec needed?
> >
> > Sorry, could you rephrase your question?
> >
> > Jean-Marc
> >
> > _______________________________________________
> > Speex-dev mailing list
> > Speex-dev@xiph.org
> > http://lists.xiph.org/mailman/listinfo/speex-dev
> >
