Hello Samuel, Actually there are $3 32-bit microprocessors with floating point, and many embedded processors (e.g. those used in android phones) no have FPUs. So I think the need for fixed point is diminishing, its only a few thousand more transistors on a chip, Moores law etc.
A year ago I worked up an estimate for the labour reqd for a fixed point port - it was about $80k. Cheers, David On Sat, 2013-03-02 at 09:01 +0000, Samuel Hunt wrote: > I can see turning Codec2 into Fixed point would have huge advantages for > opening up things like dsPIC devices, etc, and would be needed to take > Codec2 onto the next level. > > I have huge hopes for Codec2, but without it being possible to compile > it into a dsPIC or similar, it is somewhat limited to either having a > very expensive processor (relative to cheaper ones anyway!) or consigned > to somewhere where there is a PC. > > > What sort of money are we talking about, if the work is to be paid for? > > It would be interesting to list out all the areas which require > development. I notice a few listed on the website, generally relating to > quality, etc, but if money would help to accelerate these, it would be > nice to look at. > > > > Perhaps then we can find people to put the required money in to do > development in areas which most interest them? > > > Only a thought. > > Samuel Hunt > > > On 01/03/2013 21:30, freetel-codec2-requ...@lists.sourceforge.net wrote: > > Send Freetel-codec2 mailing list submissions to > > freetel-codec2@lists.sourceforge.net > > > > To subscribe or unsubscribe via the World Wide Web, visit > > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > or, via email, send a message with subject or body 'help' to > > freetel-codec2-requ...@lists.sourceforge.net > > > > You can reach the person managing the list at > > freetel-codec2-ow...@lists.sourceforge.net > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of Freetel-codec2 digest..." > > > > > > Today's Topics: > > > > 1. Re: Codec2 on asterisk is latest version? (David Rowe) > > 2. codec2 float to fixed ( ???? ) > > 3. Re: codec2 float to fixed (Bruce Perens) > > 4. Re: codec2 float to fixed (Andreas Weller) > > 5. Changing the Sample Rate (Daniel Mundall) > > 6. Re: Changing the Sample Rate (Bruce Perens) > > 7. Re: Changing the Sample Rate (Daniel Mundall) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Wed, 27 Feb 2013 06:16:27 +1030 > > From: David Rowe <da...@rowetel.com> > > Subject: Re: [Freetel-codec2] Codec2 on asterisk is latest version? > > To: freetel-codec2@lists.sourceforge.net > > Message-ID: <1361907987.3311.99.camel@bear> > > Content-Type: text/plain; charset="UTF-8" > > > > Hi Roberto, > > > > Nope, just the source code. I'd start by working towards getting two > > asterisk boxes to talk Codec 2. If you roll back your codec2-dev to the > > SVN version for which the Asterisk patches were generated it might work. > > > > - David > > > > On Tue, 2013-02-26 at 02:07 -0300, Roberto Carballa wrote: > >> Hi Bruce/David, > >> > >> > >> Thanks, for some reason I did not receive the digest. > >> Im not very used to do this, is there any guideline somewhere > >> on how to update the asterisk version? > >> > >> > >> Thanks, > >> Roberto > >> Bruce Perens Fri, 22 Feb 2013 16:35:36 -0800 > >> > >> > >> > >> In codec2-dev, not codec2. That could confuse people. > >> > >> Thanks > >> Bruce > >> > >> On 02/22/2013 04:33 PM, David Rowe wrote: > >>> Hello Robert, > >>> > >>> The latest version is what's in Codec 2 SVN. > >> > >> ------------------------------------------------------------------------------ > >> Everyone hates slow websites. So do we. > >> Make your web apps faster with AppDynamics > >> Download AppDynamics Lite for free today: > >> http://p.sf.net/sfu/appdyn_d2d_feb > >> _______________________________________________ Freetel-codec2 mailing > >> list Freetel-codec2@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > > > > > > > > > ------------------------------ > > > > Message: 2 > > Date: Thu, 28 Feb 2013 14:05:06 +0800 > > From: " ???? " <496623...@qq.com> > > Subject: [Freetel-codec2] codec2 float to fixed > > To: " freetel-codec2 " <freetel-codec2@lists.sourceforge.net> > > Message-ID: <tencent_17b48fe44eaaef7632c86...@qq.com> > > Content-Type: text/plain; charset="gb18030" > > > > i recently compiled codec2 for a S3C2440 board,which has no fpu,the > > encode/decode speed is very slow. > > > > > > and i also planted speex on my board, > > when compiled without --enable-fixed-point,the encode/decode speed is very > > slow; > > but compiled with option --enable-fixed-point,the encode/decode speed is ok; > > > > > > so i wonder if codec2 has an --enable-fixed-point option when compile ; > > if codec2 doesn't has this option,what can i do ? go deep in the source > > code and convert the float to fixed?? that's difficult > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > > > ------------------------------ > > > > Message: 3 > > Date: Wed, 27 Feb 2013 22:15:32 -0800 > > From: Bruce Perens <br...@perens.com> > > Subject: Re: [Freetel-codec2] codec2 float to fixed > > To: freetel-codec2@lists.sourceforge.net > > Message-ID: <9551d1c4-0538-4cc7-a0e9-c88d8abaf...@email.android.com> > > Content-Type: text/plain; charset="utf-8" > > > > Jean-Marc Valin created a set of macros that use float or fixed-point in > > Speex. We have not adapted Codec2 to use any form of fixed-point arithmetic > > yet. I think David would like to find someone to pay for the work. > > > > "????" <496623...@qq.com> wrote: > > > >> i recently compiled codec2 for a S3C2440 board,which has no fpu,the > >> encode/decode speed is very slow. > >> > >> > >> and i also planted speex on my board, > >> when compiled without --enable-fixed-point,the encode/decode speed is > >> very slow; > >> but compiled with option --enable-fixed-point,the encode/decode speed > >> is ok; > >> > >> > >> so i wonder if codec2 has an --enable-fixed-point option when compile ; > >> if codec2 doesn't has this option,what can i do ? go deep in the > >> source code and convert the float to fixed?? that's difficult > >> > >> ------------------------------------------------------------------------ > >> > >> ------------------------------------------------------------------------------ > >> Everyone hates slow websites. So do we. > >> Make your web apps faster with AppDynamics > >> Download AppDynamics Lite for free today: > >> http://p.sf.net/sfu/appdyn_d2d_feb > >> > >> ------------------------------------------------------------------------ > >> > >> _______________________________________________ > >> Freetel-codec2 mailing list > >> Freetel-codec2@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_feb > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
